eatai - lenco racing converter driven transmission. we offer a transmission for almost everyone with...

EGNFIACING TFIANSMISSIONS

EATAI.OG

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The year 2005 represents a significant milestone forLENCO Racing lransmissions. We celebrate thirty-fiveyears of engineering and manufacturing of the mostsuccessful drag racing transmissions ever built.Naturally we could not have achieved this accomplish-ment without our loyal and dedicated customers. Weare indebted to all of the racers and teams who not onlyhave chosen to rely on our transmissions, but who havealso contributed ideas and suggestions to make ourproducts even better. So, our hat is off to you for help-ing make LENCO the alltime champion andundisputed leader in the drag racing arena.

Leonard Abbott started the company in 1970 withhis introduction of the Sure-Shift two-speed.Subsequent years have seen the evolution tothree-, four-, five-, and six-speed LENCO RacingIransmissions. We have added the ST1200Street-Strip model as well as the LENCODRIVEtorque converter driven transmission.

We offer a transmission for almost everyone with morethan fifty combinations plus reverse units, gear reduc-ers, boat clutches and boat transmissions.

Our design and engineering team has always listenedto our customers and been quick to respond to theirchanging needs. We constantly have new projects andapplications on the drawing board and invite you to calland find out how you can keep ahead of the curve onyour way to the winner's circle.

GONTENTS

Transmission selectionand identification overview

CS1 Standard Design

CS2 New Generation

CS3 New Generation

ST1200 Street Strip

LENCODRIVE convertor stvle

Boat transmissions and ctutches

Gear ratio reducers,bitlet lockers, spoots, axles,driveshafts, coupters, ctamps

Shifters

Input shafts, throwout bearings,cottars, cross shafts, forks,pitot bearings, line-up shafts,crankshaft buttons

R&D and Machining services

Policies

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6

8

10

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14

15

16

17

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20

ITNCOffi.M@

I

fhe LENCO Jransmission lamilVSeven different designs engineered to harness up to 35OO HP

We offer an extensive variety oftransmissions.The following twopages present a brief descrip-tion of each of our designs. Formore specific information on anyof these transmissions pleaserefer to the pages devoted tothe style you are interested in orcall our toll free tech line at1-800-854-2944(6191287 -2500 in California)[email protected]

ln general, all LENCO transmis-sions are a planetary design.Planetary transmissions rely ona central sun gear to provide a1:1 direct drive ratio onceshifted from the launch ratio.

In order to achieve an under-drive first gear ratio the LETVCO

transmission relys on planetgears which rotate around thepreviously mentioned sun gear.Each sun and planet gearsetrepresents two speeds. Thosetwo speeds are (1) the lowerunderdrive ratio and (2) thedirect'1:1 final lock-up driveratio.

Each LETVCO transmissionis thus a two-speed and ishoused in its single dedicatedcase.

We achieve more than twospeeds by assembly of multiplecases. For example, a three-speed requires two cases, a

four-speed requires three cases,a five-speed requires four casesand a six-speed requires fivecases. In all instances you willrequire a LENCO reverse unit toachieve reverse movement.

Since each case contains onegearset and provides bothunderdrive and direct drive,multiple cases provide multipleunderdrive ratios.

You must multiply each case'sunderdrive ratio in order to deter-mine the first gear ratio. In theexample of a four-speed, thecase nearest the engine wouldcontain a 1.37 ratio planet gearset. The middle case would alsocontain a 1.37 planet gear set.The rear case a 1.31 ratio gearset.

By multiplying these three ratiosyou come up with a 2.46 firstgear ratio. Second gear ratio is1.80 and third gear is a 1 .31

ratio. Final drive ratio is 1:1.

The internal action of aLENCO is such that whenthe transmission is in firstgear the chosen planet gearassembly provides thelaunch ratio. The planetgears are driven by anencompassrng flng gear.When the transmission is

shifted a clutch pack com-presses the rotating sun gearassembly to the direct drivecentral sun gear. Thus a 1:1

ratio is achieved.

Each case in succession.with its dedicatedunderdrive ratio, determinesthe immediate drive ratio.Once all cases have beenshifted the entire transmis-sion assembly is locked inthe final 1:1 direct drive ratio.

With the extensive number ofratios we offer it is possibleto choose from over 7,000first gear combinations in thecase of a four-speed forexample.

It is not necessary for thedriver to disengage the clutchwhen shifting from ratio toratio. All shifting is done withthe engine's clutch engaged.

Call our technical deoartmentat 1-800-854-2944(1 -61 9-287 -2500 i n Cal iforn ia )[email protected] any questions you mayhave concerning functionor applications.

.,.it:. .,,,.,,4.

1.31 Reverser1.31 1:1

The 4-speed above showshow to determine drive ratios.Multiply all three gearsef ratiosto determine the first gear ratio of2.47:1. Multiply the two rear casegearset ratios to determine thesecond gear ratio of 1.80:1. Thegearsef in the third case alone,1.31:1, determines the third gearratio. Allthree units shifted equalfinal drive ratio of 1:1.

2

GSf Standard Designlntroduced in 1972 as a 2-speedthe Standard Design LENCO is ourlargest and strongest transmission.Most often seen in superchargedalcohol and mega HP nitrous carsthe CS1 Standard Design LENCOis also commonly used by Pro Modmachines and blown nitro andalcohol drag boats.

The CS1 Standard Design LENCOis recommended for the mostsevere applications and is capableof repeatable consistency with aminimum of maintenance.Engineered to handle 3500+ HPthe Standard Design LENCO isavailable with up to 5 speeds andcomes in a cast magnesium case.Lever or CO2 shift.See page 4 for complete description

LENCODRIVE AutomaticThe LENCODRIVE is the automaticanswer for people who prefer torqueconve rter/a utomatic tra n sm issio napplications. A perfect replacementfor expensive breakage pronePowerglides, Turlcos, C4, C6 style andTorouefl ite transmissions the LENCO-DRIVE is 100% LENCO and willhandle 2500 HP with ease. With aselection of 16 first-gear ratios forthe two-speed and hundreds morefor three-speeds the LENCODRIVEpresents you with the opportunity todial-in your exact combination. Youcan add additional cases andgearsets that will result in 3 or 4speeds. As with all LENCO trans-missions a separate reverse unit isemployed. Air or lever shift.See page 12 for complete description

GS2 - GS3 l\lew GenerationThe CS2 and CS3 New GenerationLENCO racing transmission is asmaller, lighter and more compactversion of our CS1 StandardDesign. Smaller diameter andshorter length make this transmis-sion a practical choice for use inrestricted confines and instanceswhen you have limited distancefrom the engine to the rear end.

The CS2 handles up to 3000 HPand CS3 1800 HP. Both transmis-sions are available in 2,3, 4 or 5speeds. Magnesium cases are usedfor both the CS2 and CS3.

Competition Eliminator, Super class-es, Top Dragster and Pro Stock carsare typical classes where you willfind the New Generation LENCO.As with the CS1 Standard Design,the New Generation CS2 and CS3can be shifted by lever or our CO2system.Seepages 6 through 9for complete description

Transmission Clutch

Boat Transmissions andBoat clutchesPurpose designed and produced fordrag, ski and river boat requirements.Shown with our boat bellhousing.The CS1, CS2 and CS3 transmis-sions provide the perfect solution forharnessing the unique HP and torqueoutput of boat engines. The boatclutch provides gentle engagementand disengagement. This uniqueclutch is a very popular replacementfor clunky V-drive dog style in-outboxes.See page 14 for complete description

STI2OO Sfreet StripThe TENCO ST1200 is the answerfor Pro Street and streeVstrip appli-cations. This transmission can beused to drive your hot rod to workMonday through Friday and then tothe dragstrip and the winner'scircle on weekends. The ST1200 isthe same engineering design as theall-out-race New Generation CS2but with a couple of minor differ-ences. One variation is that theST1200 uses budget-friendly 8620alloy for the gears instead of themore expensive 9310 material. TheST1200 also utilizes aircraft qualitybearings where the pure-race CS2uses aerospace spec components.The result is LENCO quality anddurability at a reasonable "StreetMachine" orice. Recommended forcars making up to 1200 HP theST1200 is pure LENCO throughand through. Air or lever shift.See page 10 for complete description

Reducer shown with reverse case

Gear Ratio ReducerThe LETVCO Gear Reducer is usedas a stand-alone unit or in conjunc-tion with our CS1 Standard Designand CS2 and CS3 New Generationtransmissions in order to employ tallrear gears with the advantage of ashort launch ratio. Since the tallerring and pinion have more tooth areacontact they are more reliable andless prone to breakage. The LENCOgear reduction unit - with a range of31% to 56%-helps get you off thestarting line. Most popular with SandDragsters, Mud racers and Modifiedpullers.See page 15 for complete description

3

S dard DesignThe CS1 Standard Design LENCO is the largest and strongesttransmission we build. All Standard Design LENCO transmissionsare referred to as the CSI style. Likewise, New GenerationLENCOs (pages 6 and 8) are referred to as CS2 and CS3 styles.

Our CS1 StandAfd_DeSLgn transmissions are available with up tofour forward speeds plus reverse and can be either CO2 or manual-lyshifted. We use 9310 steel 1" planetgears which can control upto 3500 HP. As with all of our transmission designs we offer a vari-ety of lightening procedures for the rotating components. A castmagnesium case is standard.

As with all LEA/CO transmissions the CS1 is based on individual2-speed planetary units with multiple speeds being achievedthrough utilization of multiple 2-speed units.

Frank Manzo - multiple World Championships -

CS1 equipped

Super Gas - Scott VandetwalkerCSl equipped

CSI BOATIRANSM/SS/ONS ANDCLUTCHES CAN BEFOUND ON PAGE'14

CSl 2-speed1 Magnesium case.Handles uo to 3500 HP.

Designed for use insupercharged boats,pullers, mud boggers andother severe duty appli-cations. Shown with airshift servo. Available withlever shSee faci

CS7 3-speed2 Magnesium casesHandles 3500+ HP.

Recommended forsupercharged alcohol ornitro cars and boats, TopSportsman and Pro Modapplications as well asvery high torque pullers.Air or lever shift.See facing page for ratios

CSl 4-speed3 Magnesium casesHandles uo to 3500 HP.

ldeal for heavier carswhere the advantage of awide gear ratio selection isdesired. Commonly usedin supercharged or nitrous

4Richard Earl and Kenny Voss - CSl equipped

Air or lever shift

2, 3, 4 or 5 speeds

Simple at-trackratio change

Engineered toharness 3.000+ HP

All shafts available in Marage

Reverse lockout

a

Low shift pressure forsmooth ratio to ratiotransition

Extensive factory support

Severe dutyclutch packs

a

I cSf sfa ndard Features

Severe UseApplications

Air or Levershtft .

Engineered forAlcohol Funny Car

Demands

Higher GearedRatios

32 or 35 SplrneOutput Shaft

2" low gear with 1"third and fourth gear

CS7 ratios with 7" gears

1.25 uses 34 tooth planet gears, a 23 toothsun gear and a 91 tooth ring gear.

1 28 uses 32 tooth planet gears, a 25 toothsun gear and an 89 tooth ring gear.

1.31 uses 27 tooth planet gears, a 25 toothsun gear and an 80 tooth ring gear.

1.34 uses 24 toolh planet gears, a 25 toothsun gear and a 74 tooth ring gear.


1 41 uses 24 tooth planet gears, a 34 toothsun gear and an 83 tooth ring gear.

1.44 uses 20 tooth planet gears, a 32 toothsun gear and a73 tooth ring gear.


1 .46 uses 22 tooth planet gears, a 37 toothsun gear and an 80 tooth ring gear


1 .50 uses 17 tooth planet gears, a 34 toothsun gear and a 68 tooth ring gear.


1.68 uses 15 tooth planet gears, a 62 toothsun gear and a 91 tooth ring gear

CS|w ratios with 2" gears1.17 (1.165)uses 22138tooth planet gears,a 24 tooth sun gear and an 84 tooth ring gear.

1.19 (1.'191)uses 28138 tooth planet gears,a 23 tooth sun gear and a 91 tooth ring gear.

1.22 (1.219) uses 30/35 tooth planet gears,a 23 tooth sun gear and a 90 tooth ring gear.

1.25 (1.252) uses 24128 tooth planet gears,a 23 tooth sun gear and a 78 tooth ring gear

Air ondLeverShiftersQaa nnna 1A

for complefeselecfion,

2" Low Gear Ultra-SevereDuty Brute Torque GSftvThe biggest and baddest of all LENCO transmissions.Specifically engineered for the rigors and demands ofultra-severe applications. Uses special cut 2" gear setsin fonruard low gear case. Second gear set case, in theevent of 3- or 4-speed applications it is possible to utilizestandard 1" gear. CSll is slightly larger than standardCS1 at 9" diameter and 9 1/4" length.

See right column for ratios

High Gear Reverserfor Direct Drive useWe supply your choice of

32 or 40 spline reverse units for direct drive appli-cations. Mates to bellhousing or clutch manage-ment system. In some cases we can supply a neu-tral position configuration. We also manufacture analuminum bellhousing adapter plate. Additionally,we produce a gearset eliminator kit that allows youto apply power directly through your existingLENCO case. The gearset is replaced by a couplerthat connects the existing input and intermediateshaft.

5

New denerationThe New Generation LENCO transmission is a smaller, lighter versionthat has evolved from our Standard CSI Design. The CS2 is essentiallyidentical to the CSl with the exception of utilizing 3/4" gears as opposedto the CSl's 1" gear design. The more compact CS2 provides ease of fitin tight spaces with no compromise to traditional LENCO strength andreliability. There are two styles of the New Generation LENCO -theCS2 and CS3. These two facing pages show the mid-sized CS2.Pages 8 and 9 show the even smaller CS3.

The CS2 LENCO is available with up to 5 forward speeds plus reverse.We offer a variety of lightening procedures for internal rotating massand suggest you call and discuss your exact application and require-ments. All of our transmissions are purpose built and there is no "Off theshelf, one size fits all" LENCO. As with all LENCO transmissions the CS2may be shifted with CO2 or manually. Cast magnesium case is standard. David Well's BIue Bunny TAD -

CS2 equipped

CS2 2-speed1 magnesium ease.Handles up to 3000 HP.

Suggested for super-charged cars, boats,pullers, mud boggers andnitrous oxide assistedmachines where availablespace is at a minimumand a tight frt is a neces-sity. Air or lever shift .

See facing page for ratios

CS2 3-speed2 magnesium cases.Handles up to 3000 HP.

Widely used in TopDragster, superchargedalcohol and superchargedgasoline cars and boats.Small size helps solve fitconstraints while stillgiving reliable LE/VCOstrength and repeataibility.Air or lever shift.See facing page for ratios


Recommended for heaviernitrous oxide or super-charged machines whenspace is at a premium.Popular with Pro Modracers. Air or lever shift.See facing page for ratios

CS2 5-speed4 magnesium casesHandles up to 3000 HPRecommended forPro Stock, Comp eliminator,10.5 tire cars and similarclasses. With five fonruardspeeds you can tailor thefive ratios to fit your uniquepower band needs.Especially well suited fornarrow rpm range andclose toleranceengine/clutch tuning.Air or lever shift.See facing page for ratios

6 The original "Shifter" T/F shop car testing thelirst Lenco Sure-Shiff at Carlsbad circa 1970

Air or lever shift Reyerse lockout

Extensive factory support2, 3, 4 or 5 speeds



Engineered to.- Ail shafts available in Marage

t harness 3000 HP Ill

GS2 Sta ndard Features

Couplers, input shafts, axles, spoorsSee pages '15 through 17 for these and other associated

LENCO driveline components.

oa

All LENCO tronsmissions moy beshifted wilh oir or lever shiffers.See poge l6 for oul comPlele

seleclion.

ta

Top: Hairston Motorsports Pro Street CamaroBottom: Tim O'Hare Pro Street Camaro'both CS2 equipped

fRUCKREVERSERFor CS1 and CS22,3 or 4 speeds.Gives you the ability toback-up as fast as you goforuvard. Extreme dutv.Magnesium case.

7

CS2 ratios with 3l4" gears

l- t . t 0 uses 21 /36 tooth planet gears, a 22I tooth sun gear and a 79 tooth ring gear.ai 1.19 uses 21l33 tooth planet gears, a 22

$ tooth sun gear and a 76 tootl-iring gear.

v6s 1.20uses22132 tooth planet gears,a22i tooth sun gear and a 76 tooth ring gear.GE 1.21 uses 21l3'l tooth planet gears, a 24g tooth sun gear and a 76 tooth ring gear.qa 1.22 uses 21l30 tooth planet gears, a24

$ tooth sun gear and ai5 tootfiring gear.

F l.ZS uses 21i30 tooth planet gears, a 25

d tooth sun gear and a 76 tooth ring gear.

I l.zq uses 26131 tooth planet gears, a 23l- tooth sun gear and an 80 tooth ring gear.

1.20 uses 40 tooth planet gears, a 21 toothsun gear and a 1O2 tooth ring gear.

1.22 uses 38 tooth planet gears, a 22 loolhsun gear and a 98 tooth ring gear.

'1 .25 Small Shaft gearset uses 32 toothplanet gears, a22tooth sun gear and an 86tooth ring gear.

1.25 Large Shaft gearset uses 36 toothplanet gears, a 25 tooth sun gear and a 98tooth ring gear.



'1 .35 uses 26 tooth planet gears, a 28tooth sun gear and an 80 tooth ring gear.

1.38 uses 23 tooth planet gears, a 28tooth sun gear and a 74 tooth ring gear.



1.46 uses 22 Iooth planet gears, a 37 toothsun gear and an 80 tooth ring gear.



1.56 uses 22 tooth Planet gears, a 55tooth sun gear and a 98 tooth ring gear.

1.68 uses 15 tooth planet gears, a 62tooth sun gear and a 91 tooth ring gear


CALL TOLL FREE

{ -800-85 4-2944(ln California 61 91287 -2500)

erationThe LENCO CS3 is the smallest and lightest version of ourtwo New Generation designs. The very compact CS3 is

titanium planet cases - and suggest you call to discuss yourspecific application and objectives. These lightening opera-tions are available as special order. A Low-Drag reverse isalso an option to the standard reverse unit.

As with all LENCO transmissions the CS3 may be shifted withCO2 or manually. Lightweight magnesium case is standard.

CS3 2-speed1 magnesium case.Handles up to 1800 HP.

Made for lightweight sanddrag cars, boats, pullers,mud boggers and nitrousoxide assisted machines.Engineered for applica-tion in restricted soace.Shown with air shift pod.Available with lever shiftmechanism.See facing page for ratios

CS3 3-speed2 magnesium cases.Handles uo to 1800 HP.

Designed for lighterweight Top Sportsmancars and similar ooweredboats. Smallest sizedLENCO fits the mostcramped quarters.Air or lever shift.See facing page for ratios


Recommended for lightweight nitrous oxide orsupercharged machineswhere four soeeds arenecessary. Perfect for TopSportsman andCompacUl mport classes.Air or lever shift.See facing page for ratios

CS3 5-speed4 magnesium casesHandles uo to 1800 HPRecommended for lighterweight Pro Stock, Compeliminator andCompacVlmpod classes.Five forward soeeds.Wide variety of gear ratiosallows the opportunity toemproy narrow rpm range.Air or lever shift.See facing page for ratios

f -800-854-2944(l n California 61 91287 -2500) I

John Montecalvo's CS3 equipped IHRA Pro Stock

CALL TOLL FREESteve Papadakis


3,4or5speeds

Reverse lockoutG

Air or lever shifl

!d

\

2,

€uGS3 rafios with ll2" gears1.16 uses 2'l136 tooth planet gears, a 22 tooth sungear and a 79 tooth ring gear.

1.'18 uses 21l33 tooth planet gears, a 22 tooth sungear and a 76 tooth ring gear.

1.20 uses 22132 tooth planet gears, a 22 tooth sungear and a 76 tooth ring gear.

1.21 uses 21131 ,tooIh planet gears, a 24 tooth sungear and a 76 tooth ring gear.

1.22 uses 21l30 tooth planet gears, a 24 tooth sungear and a 75 tooth ring gear.

1.23 uses 21l30 tooth planet gears, a 25 tooth sungear and a 76 tooth ring gear.

1.24 uses 26131 tooth planet gears, a 23 tooth sungear and an 80 tooth ring gear.








1.378 uses 23 tooth planet gears, a 28 tooth sungear and and a 74 tooth ring gear.




1 .500 uses 19 tooth planet gears, a 38 tooth sungear and a 76 tooth ring gear.

1 .566 uses 18 tooth planet gears, a 45 tooth sungear and an 81 tooth ring gear.

Low shiftpressure forsmooth ratioto ratiotransition

Extensive factory support


Engineered toharness 1.800+ HP

I e il shafts avaitable in Marage Itl

GS3 Sta ndard Features

Air ond Lever ShiftersAll tElVCO tronsmissions moVbe shifled with oir or lever shiffers,See poge l6 for our completeselection os well os ootions.

t

SJreeThe LENCO ST1200 transmission has beenspecifically designed and engineered for severeduty street/strip applications.

The ST1200 gives you the advantage of LENCObrute strength at a lesser price than our full raceunits. The ST1200 is pure LENCO through andthrough and is ideally suited for nitrous, blown,injected and carbureted engines producing up to1200 HP and 900 lb. ft. of toroue.

As with all LETVCO transmissions the ST1200 is aplanetary design and comes with up to 6 forwardspeeds. Shift with either our patented multi leversystem or with the optional, more compact CO2setup.

Multiple speeds are achieved through utilization ofmultiple cases. See page 2for an overview expla-nation of how a LENCO transmission works.

The ST1200 is available with all popularbellhousing patterns - Ford, GM, MoPar and ourown five-bolt design. You choose any conventionalinput shaft spline.

We are able to offer the ST1200 StreetStrip atlower cost than our pure race CS1, CS2 and CS3designs since we use 8620 steel instead of 9310material for the ST1200 gears. 8620 is a premiumquality material that will provide excellent servicefor 1200 HP hot rods. 9310 steel would be usedin Pro Stock, Pro Mod and other similar applica-tions where substantially more HP, torque and tireplant is generated. We supply premium gradebearings in the ST1200 instead of the much moreexpensive aerospace:spec bearings as used inour race transmis ST120aluminumcasesi emagrace units.

The ST{ 2OO Street'StripGomes Gomplete With:t lnput shaftt Throwout bearing collaro Pilot bearingo Choice of ratiot Choice of either Flat handle

or Hex handle shifterr Reyerse with Neutral and choice

of 16 or 32 spline output shaft,and matching driveshaft yoke.

Jim Bryant

10

Chevrolet, Ford or MoParflange pattern

Long distancetour ready

Adjustable shiftpressure forsmooth ratioto ratiotransition

Engineeredto harness1200 HP

Air or lever shift

Reverse lockout


Billet yokeoptional -

I s'upptied with II forged yoke I

-

STf ures

Multiply all four gearset ratios(first case has a 1.38,second case has a 1.31, thirdcase has 1.3'1 gear set andfourth case has a 1.25 ) todetermine the first gear (launch)ratio of 2.96:1. Multiply thegearsets of the last three casesto determine the second gearratio of 2.15. The ratio of thethird case is 1.64:'l and thefourth alone is 1.31:1

All four units, once shifted andclutch packs totally compressed,

tq{r

I

2.961.38

1.64'1.31 1.25

1.25 Reverse

I eCual a 1

Il- &at e &e f:iso _r

?CALL TOLL FREE

1-800-854-2944(l n California 615 l2B7 -2500)

1

1

Air ond Lever ShiftersAll tElVCO tronsmissions moy beshifted with oir or lever shifters.See poge l6 for our completeselection os well os options.

.: i,lr :

The LENCODRIVE transmission represents ourresponse to people who have asked for a safe andaffordable torq ue converter d riven tra nsmission.

The LENCODRIVE is pure LENCO throughand through with the same gearset components asour CS2 (page 6). The LENCODR/VE is availablewith your choice of all popular bellhousing patternsas well as any starter pocket positioning. TheLENCODRIVE will accept virtually any manufactur-er's torque converter. We offer Turbo 400, C6,Mega (1 114" X 29 spline) and standard Powerglidesize input shafts per your requirements. TheLENCODR/VE's trans-brake is controlled by anelectric solenoid which activates hydraulic compres-sion of a dedicated clutch pack. Additionally, theLENCODRIVE's main valve body is machined frombillet components and is not the typically modifiedOEM Detroit component.

The LETVCODRIVE is the shortest and lightesttorque converter driven transmission available any-where. The LENCODRIVE comes as a 2-speed withreverse. You can expand to 3- or 4-speeds by addi-tion of additional cases for each speed (add 6.25"length for each added section). The 2-speed,including reverse, bellhousing and lining weighsapproximately 108 lbs. The 3-speed is approximate-ly 135 lbs. All cases are magnesium.

The LETVCODRIVE does not require a containmentblanket unless you use a supercharger or alternativefuels.

| 1.38 1.31 Reverser I

| 1.ar 131 1t ItlL lt rs diagram shows a 3-speed LENCODRTVE -)with a 1.38 front case ratio which ismultiplied by a second case ratio of 1.31 toresult in a 1.81 first gear ratio. Second gearwill be 1.31 with final drive being 1:1 direct

1-800-854-2944(l n California 61 91287 -2500)

l'

12

aa When you add an additional case(s) to theLENCODRIVE in order to make it a 3- or 4-speed

. you must multiply all of the individual case gears (as low) in orQer to determine yourulting ratio. Refer to the chart on

page 13 for separate gearset ratios. When allLENCODRIVE units have been shifted you willattain a final drive of 1:1.

2,3 or 4 Speeds

16 first gear ratiosfor 2 speeds andhundreds more for3- and 4-speedconfigurations

No external lines or pumps

Air or lever shift

Engineered for up to 2500 HP

Dedicated Lenco designed andmanufactured valve body -

not a modified OEM component.

Any bellhousing pattern

C6, Turbo 400 or Mega Sizeinput shaft

300 M Mega Shafts withMarage Option

Safetyspragclutch

Trans-brake is mounted in frontof the transmission andelectrically operated by solenoidto the valve body which

trans-brake

Jack Heslink

. Magnesrum casesI Lencodrive Standard Features

-

LENCODRM lengthsThe LENCODRIVE is the shortest and lightest torqueconverter driven transmission available.

2 Speed + reverserwith Pro output: 18.500"2 Speed + reverser with Std output: 17.500"2 Speed with single brg and std output: 16.875"

3 Speed + reverser with Pro output: 25.000"3 Speed + reverser with Std output: 24.000"3 Speed with single brg and std output: 23.375"

Add these bellhousing depths to above lengths for total length

LENCO aluminum, Titanium or Browellsteel: 7.200"

LENCODRTVE gear ratios

1.20 Use compound 22 and 32 tooth planet gears, a22 tooth sun gear and a 76 tooth ring gear.



1.28 Use 32 tooth planet gears, a 25 tooth sun gearand an 89 tooth ring gear.



1.38 Use 23 tooth planet gears, a 28 tooth sun gearand a 74 tooth ring gear.


'l .44 Use 22 tooth planet gears, a 35 tooth sun gearand a 79 tooth ring gear.

1.48 Use 22 toolh planet gears, a 40 tooth sun gearand an 83 tooth ring gear.


1 56 Use 22tooIh planet gears, a 55 tooth sun gearand a 98 tooth ring gear

1.68 Use 15 tooth planet gears, a 62 tooth sun gearand a 91 tooth ring gear


Mick Snyder's LENCODRM equipped NHRA Top Alcohol Funny Car

Ron Muchkes Pro Mod

BOAT 7RA'VSM'SS'O'VSimple and quickratio change

Engineered toharness 3000 HP

Low shift pressure forsmooth ratio to ratiotransition

Reverse lockout

.:: ..:1. , . ,, ,.::

BOAT CLUTCH

Air or lever shift


All shaftsavailable inMarage

Boat clutchesThe LEA/CO Boat Clutch has evolved throughyears of racing and increased horsepowerranges. We now offer three different styles for avariety of applications. The most popular unitfor River Racer through Top Alcohol Hydroclasses is the 15 blue-disc unit and is good forpower ranges up to 3000 HP. Our large 16green-disc unit for ranges above 3000 HP. Theloads generated with the dual propellerTop Fuel Hydros require our strongest unitwhich utilizes 25large green clutch discs.

The SRM-1 (Sprag replacementmodule) was developed as adirect update for our single ordual sprag assembly and pro-vides the absolute highestlevel of reliability under themost severe conditions. This

design employs a mechanical diode that utilizesair to assist in both the locked and released posi-tion. The LENCO SRM-1 has proven tremen-dously popular in the Top Alcohol and in Pro Modranks and will control up to 3000 HP.

Standard Features

Boat transmissionsThe LEA/CO transmission readily couples toV-drive propulsion systems. You pick whichspecific transmission design is best for your needs(Standard Design or New Generation - pps 4through 9). Choose your ratio, or call our tech lineTOLL FREE at 1-800-854-2944,6191287-2500 in

California, and enter a whole new world of powercontrol and application. IE/VCO boat transmissionsfeature ultra durable double sprags for consistentlyreliable hard off-idle launches. Whether your boatis an all-out Nitro drag machine or a ski and rivercruiser we have the transmission to perfectly fityour special needs.

t"'

Boat clutch with SRM 2 speed

Boat bellhousingThe LENCO boat bellhousing is the perfect flex-freeconnection between your engine and transmission orboat clutch. lt completely shrouds the flywheel andcomes with a starter pocket. Chevrolet and latemodel Chrysler pattern. Cast from premium alu-minum and available in natural or high luster pol-ished finish.

t4Eddie Hill - circa 1979

Gear ReducerThe LEIVCO gear reduction unit,when used in conjunction withour Standard Design or NewGeneration transmission, permitsyou to utilize a tall rear end gearbut realize the advantage of ashorter launch ratio. Since thetaller ring and pinion providesmore tooth area contact it is morereliable and less prone to break-age. The LENCO gear reductionunit is available in a range of 31%through 56% and is perfect for therigorous demands of Sand racers,Mud boggers, Modified andMini-Rod pullers.

All LENCO floater axles are avail-able in your choice of Marage or300M material. 31, 33, 35 and 40spline configuration is availablewith your specified seating length.Special order features such asrifle drilling and lightening areavailable. We will supply axles

Coupler GlampsAll TENCO coupler clamps aremachined from 7075 aircraftgrade aluminum. Available insingle or two-piece design.Choose 1.375", 1.500' or 1.750"diameter.

Billet YokesThe LENCO 4140 billet steelpinion yoke eliminates the weakestlink in your driveline. Highlyrecommended for severe duty raceuse. Available in 16 and 32 spline.

)Billet Steel SpoolsThe LENCO 4140 billet steelspool is machined from 4140 materi-al and is available with 35 or 40splines. We offer both standard useand a lightened design. All grindingis done on a precision fixture thatguarantees a true concentric align-ment between the axle centerlineand the ring gear axis. 9" Ford only.1-800-854-2944

(ln California 6191287 -2500\

CouplersLENCO couplers are machinedfrom 8620 aircraft quality steelheat treated for severe dutyservice. 10 through 40 toothconfigurations. Special orderlengths available.

Biflet Lockers .. .::::.:

We manufacture both billet aluminumand billet steel 9" Ford style lockers.Each style contai illet steelcouplers and our ialtywound severe duty compressionsprings. We supply both standard orlarger carrier bearings, 31, 33 and35 spline.

up to 36"

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Ailrwith system. Sinceall LENCO utilize the same

CO2 configuration or Vice versa. No alter-ations to the transmission, other than theexternal operating system itself, are required.

A LEIVCO launch ratio is determined bythe sun and planet gear ratio (see page 2).

In all instances the transmission is thenshifted to a 1:1 direct drive ratio bydepression of the adjustable shift towerplunger. This action compresses an internalclutch pack which results in a final driveratio of 1:1. Remember that each separatecase contains its own gear-seVratio and whenconnected to additional cases multiple ratiosare realized. The shifting processremoves multiplication factors andsubsequently results in all gear-sets, after thefinal shift, being locked to a 1:1 ratio.

Shift pressure is adjustable, whetherit be for one case, all cases or anindividual case in a multiple caseconfiguration. This pressure adjustabilitygives you considerable control when finetuning your available power applicationto specific track conditions. lf the first300 feet of track is excellent, for instance,full shift pressure and instant lock-up maybe desired. lf, however, the trackis loose from 300'through 500'you can soften the shift pressure tomaintain desired wheel speed andtraction. Every track differs from dayto day or hour to hour. With a simpleshift pressure adjustment you can easilycompensate and control slippage. This is notpossible with a traditional clustergear transmission.

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A typical lever shift assembly, as shown at left above,consisfs of hand levers, activation rods, detent levers,rod towers, adjustment nuts, clevises, heim ends, frictionwashers, mounting bracket and all necessary hardware.Our Super Heavy Duty hex rod design is shown at right.

A typical CO2 shifting assembly, as shown above, consisfs ofeither a small or large CO2 bottle, bottle brackets, pressuregauges, pressure adjustable shift buttons, air servo,pressure line, fittings and all hardware.

There are a variety of bothmanual and CO2 servo towerdesigns. We recommend thatyou discuss your applicationwith our technicalrepresentatives a nd follow

their suggestions on whichspecific design will

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Pressure set-up kitOur shift pressure sef-upkif consisfs of a separateadjustment tower, lever,pull scale and chart ofre c o m m e n ded pressures.Easy to use and neces-sary for fine tuning shiftpressure control.

,,:,, 76 1:r,..

'thie 'b;ellhousing

wwThrowout Bearing CollarsAll LEIVCO throwout bearing colors are machinedfrom premium aircraft grade billet aluminum andthen hard anodized for a long and reliable life. Weoffer a wide variety of lengths, diameters and bell-housing patterns. Custom lengths available asspecial order. Available with computer pick-upboss. See application/price list for specific sizes.

Input ShaftsWe machine our input shafts from 300M andMarage material. We can supply practically anyspline and length you require. All Chrysler,Chevrolet and Ford clutch hub oatterns areavailable. Combine your input shaft with ourclutch hubs for the most precision fit.

Clutch Disc Line Up ShaftLENCO clutch disc line uo shaftsare available in black anodized billet

Throwout BearingsLENCO throwout bearings feature a forkicollar con-tact housing machined from aircraft quality 6061-Toaluminum which is then hard anodized. We usepremium quality ball bearings in the rotating assem-bly and supply four standard sizes of 1-5l8", 2-1116",2-114" , 2-518" ,2.900" and Extra long (To your dimen-sions). A heavy-duty fork retaining springis included.

Bellhousing Cross Shaft,Arm and ForkPurchase the complete LENCOassembly or individual componentsas needed. Cross shaft is machinedfrom 4130 heat treated material andcross drilled and tapped with 3/8"thread for fork positioning and fas-tening. The Fork is billet rnaterialand the cross shaft arm is made of4130 steel, has three clutch rodpositioning holes and is broached fora perfect fit to the shaft spline.

aluminum or steel. These shafts are a pedectwith all manufacturer's disc hubs.Knurled grip end.

@uestFons?CALL TOLL FREE

1-800-854-2944(l n California 61 91287 -2500)

17San Diego Raceway, Ramona, circa 1966

nmCustom Projects

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We offer extensiib engineerin$'development andmanufactufing services for a wide range ofclients - race oriented and not.

Existing LENCO equipment provides a severe dutyefficient link between your power source and theend use machinery. Since our transmissions, safetyclutches and gear reduction units can handle up to3500 HP and up to 2500 lb. ft. of torque the range ofapplications is extensive.

Our thirty-five year history has given us the opportu-nity to solve power transmission problems for agreat many customers. Though we have mostlyconcentrated on auto and boat racing as well astractor pulling, we have also fulfilled an impressivenumber of industrial needs. From missile trans-portation platforms for NASA to dynamometer basedtransmissions for General Motors Corporation, wehave successfully contributed the design andproduction expertise to resolve some very uniqueissues. Likewise, in the commercial agriculturalarena, LENCO know-how has been called upon toexpand the efficiency of farm equipment machinesincluding a grain hopper with a unique two-speedauger application.

Also among our projects has been the design andproduction of a compact and lightweight reverseunit for the JAXPORTS dwarf style race car.

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Machining Services

We provide an extensive array of machiningservices which include milling, turning, gear cuttingand broaching. Our master machinists are thefinest craftsmen and consistently perform to thehighest level of professionalism. Our state-ofthe-art equipment includes Mori Seki and OkumaCNC lathes. We can handle up to a 16" diameterworkpiece.

The milling department offers a broad assortmentof services and relies on a four-axis CNC machineto machine parts up to 30" diameter. We provideboth vertical and horizontal procedures

We supply CAD CAM services along withprototype development and are proficient workingwith magnesium, stainless, titanium and plasticsas well as traditional ferrous metals.

Among the many other in-house services we pro-vide are high volume cold saw cutting, lD and ODsurface grinding, centering and facing proceduresplus multiple programmed drilling routines.

Our gear and shaft cutting departmentoffers hobbing, broaching and internal shapingservices.

You can comfortably rely on LENCO experienceand craftsmanship to provide the services youneed at a practical price. Our long andsuccessful track record gives us the provenbackground necessary to perform for you.

Sales and shipping policiesPriceAll prices are subject to change without notice.You will be notified before shipment if any pricechanges are extreme.

TermsAll orders are shipped COD unless payment is receivedwith order. Any orders under $20.00 carry a $3.50processing charge.ALL DEPOSITS ARE NON-REFUNDABLE.

Special ordersAll special orders (items or services other thanstandard LENCO products) require a 50o/o deposit.Special orders will be accommodated per the arrangementmade with the sales representative you deal with. Specialorders may take a longer time to fill than a standard order.ln all cases any special order services or products will notbe acceoted for cancellation or return.

ShippingF.O.B. San Diego. We will use the most economicalmeans of transpoftation unless you specify othenvise -in which case additional costs may apply. We willgladly take your shipment to the airport for air freightservice if you stipulate.

ClaimsClaims for damage or lost shipments, open or concealed,must be made to the freight forwarder. Claims for short-age of product must be made to LENCO within five daysof receipt of order.

ReturnsFormal request must be made before the return of anymerchandise. Any return is subject to a 15oh handlingcharge Special order parts are not returnable.

LENCO Equipment Company, Inc.6470 Federal BoulevardLemon Grove, California [email protected]

trypl\illF.ln Tn.&rJ$ 1g:il 3

LENCO drivetrain components and associatedparts are manufactured for the exacting demandsof drag racing competition. These state-of-the-art products are directed for discriminating racersand automotive enthusiasts. LENCO productsare the result of many years of research develop-ment and severe environment testing in condi-tions that require judicial compromise betweenconflicting characteristics such as weight andsturdiness or long life. LEIVCO products are notrecommended for ordinary use or for use inconventional vehicles.

Limited warrantyLENCO Equipment Company, Inc. warrants itsproducts to the ORIGINAL PURCHASER to befree of defects in material or workmanship for aperiod of thirty days from date of purchasereceipt. The obligation of LENCO EquipmentCompany, Inc. under this warranty shall belimited to replacement or refund (our option)during these thirty days providing the product inquestion is used under normal conditions. Thiswarranty shall be invalid if the product is alteredor misused. This 30-day warranty is in lieu ofany other expressed warranties, obligations orliabilities.

ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABIL.ITIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIEDWARRANTIES OF MERCHANTABILITY AND FITNESSFOR A PARTICULAR PURPOSE, SHALL BE LIMITED INDURATION OF THIS WRITTEN LIMITED WARRANTY.

IN NO EVENT SHALL LENCO EQUIPMENT COMPANY,INC, BE LIABLE FOR ANY SPECIAL, INCIDENTAL ORCONSEQUENTIAL DAMAGES FOR BREACH OF THISOR ANY OTHER WARRANTY EXPRESSED ORIMPLIED, WHATSOEVER.

Approved returns - ACCOMPANIED BY PROOFOF PURCHASE - must be delivered to theplace-of-purchase or shipped free of port to:LENCO Equipment Company, Inc.6470 Federal BoulevardLemon Grove, California 91945619t287-2500

2A

FACINC3 TFANSMISSIONS

LENCO Equipment Company, Inc.6470 Federal Boulevard

Lemon Grove, California 91945619t287-2500

[email protected]

eatai - lenco racing converter driven transmission. we offer a transmission for almost everyone with...

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