1.44%Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Air servos are specific to the type of Lenco you run so be sure to pick the correct one from the drop down menu. Do Not Over Tighten. 1.24% Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Lenco Racing, the all time champion and undisputed leader in the drag racing. Chevy Pilot Bearing Assembly 1955-2000 Chevrolet (SB & BB), and Lenco transmissions. Every track differs from day to day or hour to hour. This will allow for free play in the shift system. If it takes over one second to reach full pressure at the pod, you have a restriction (regulator, line, button). It is also 2-lbs lighter for lower rotational mass which translates to quicker acceleration. Air or lever shift. 1.25%(Small shaft gearset) Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. Traditional manual transmissions consist of at least two linear shafts: an inline input and output shaft, and a counter shaft. Lencodrive Options: (option pricing only). Reverse Lockout. All transmissions work by using gear ratios to transfer power to the rear wheels. Now taking all the lash out by lifting up on the clutch housing (outer housing) and press down on the pressure plate then measure the distance between the top of the pressure and the bottom of the snap ring groove of the clutch housing, This is your clutch pack clearance. 1.438% Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. To demonstrate the inner workings of the Lenco ST-1200 transmission, we followed along as one was being assembled for use in Truckin' Magazine's World's Fastest Street Legal Pickup. 1.21% Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. It is bolted to the end of the transmission with a splined output shaft which will await the driveshaft yoke. Available in either bare aluminum (clear) or hard anodized black finish, you can choose the transmission finish that best suits your style; however, Lenco highly recommends the standard hard anodized black finish as transmissions usually live a hard life underneath a car where no one can see it, and where it is subject to lots of splashing and hits from rocks and other road debris. Screw air servo in (clockwise) until you see the rotary plate start to shift, now screw air servo Out (counter-clockwise) until the rotary shift plate stops moving. 1.41% Uses 23 tooth planet gears, a 32 tooth sun gear and a 79 tooth ring gear. Charlotte , NC. In order to achieve an underdrive first gear launch ratio the LENCO transmission relys on planet gears which rotate around the sun gear. 1.68%Uses 15 tooth planet gears, a 62 tooth sun gear and 91 tooth ring gear. Each LENCO transmission is thus a two speed and is housed in one dedicated two speed. The original transmission was and is still a bulletproof transmission for the street/strip crowd. The ST1200 gives you the advantage of Lenco brute strengthat a lesser price than our full race units. Remove fill plug on top the transmission case you are going to adjust. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. shift pressure control. 2 Speed + reverser with Pro output: 18.500". Our sister publication is attempting to build an 8-second quarter-mile, '68 Chevy pickup which will also embark on a 450-plus mile trek from Los Angeles to Phoenix without any other changes. These four gears (sun gear and three planet gears) sit in a planetary carrier that holds them together as a unit. Since each case contains one gearset and provides both underdrive and direct drive, multiple cases (gearsets) provide multiple underdrive ratios. When discs wear to .052" or less they must be replaced. Every track differs from day to day or hour to hour. 3 Speed + reverser with Pro output: 25.000". 2 Speed + reverser with Std output: 17.500". (1) in the bruno/lenco the fluids are seperate - which gives you options of running different fluid types and no chance of breaking the lenco side and mixing it into the converter. The Lencodrive comes as a 2 speed with reverse. 1.31%Uses 27 tooth planet gears, a 25 tooth sun gear and a 80 tooth ring gear. The arm is held into the servo piston by a set screw. 1.68% Uses 15 tooth planet gears, a 62 tooth sun gear and a 91 tooth ring gear. All LENCO transmissions can be shifted with levers or a CO2 system. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. When you shift into second gear a lockout happens which "locks" the sun gear, three planet gears, and the ring gear together so that they all spin in unison. This is what comes standard in most new LENCO transmissions. 1.16% Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. A perfect replacement for expensive breakage prone Powerglides, Turbos, C4, C6 style and Torqueflite transmissions the Lencodrive is 100% Lenco. ST1200 4 Speed with Reverse and Shifter | Lenco 5.6K views, 84 likes, 1 loves, 13 comments, 17 shares, Facebook Watch Videos from Lenco Racing Transmissions, Inc.: David answers a few FAQ on CS-1 thru CS-4 Transmissions Second gear ratio is 1.80 and third gear is a 1.31 ratio. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. Engineered to handle 3500+ HP the Standard Design LENCO is available with up to 5 speeds and comes in a cast magnesium case. To address this, Lenco added more gear ratios, particularly ratios which were half-steps to fill in the gaps so that a customer could fine tune their system without the pesky large leap that used to happen. A first-to-fourth skip-shift solenoid is used on the transmission to help increase fuel economy. of the adjustable shift tower plunger. the shift pressure to maintain desired wheel speed and traction. Copyright 2020, Lenco Racing. The middle case would also contain a 1.37 planet gear set. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. 2 Speed with single brg and std output: 16.875". It is not necessary for the driver to disengage the clutch when shifting from ratio to ratio since all shifting is done with the engines clutch fully engaged. The middle case would also contain a 1.37 planet gear set. Shift with either our patentedmulti lever system or with the optional, more compact CO2 setup. 1.50% Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. Lenco revamped the ST1200, by replacing sand molds with CNC 5 and 6-axis milling machines. The biggest benefit to Pro Streeters is that you don't have to worry about overheating, flashing the torque converter or other maintenance costs-as there are none. 1.50%Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. Each case in succession, with its particular underdrive ratio, determines the immediate drive ratio. Jeff Turner's street driven 600hp on motor/800hp on a 200-shot of nitrous "race for money" license platted 1966 Pontiac GTO took us for a spin. Lenco Transmissions Tech | www.darkside.ca Each planetary gear set is in its own housing and carries a higher ratio. Proving itself to be a dependable and excellent option that fits with the blending of racing and street-driven cars, the dual clutch transmission has taken manual transmission performance to a whole new level. Casings are anodized and set in a mechanical press. The second lever, and second tallest, is used for third gear. 1.338%Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. word-day-lightning-rods | News | Grassroots Motorsports Lenco, the all time champion and undisputed leader in the drag racing transmissions. Pistol Grip Manual Shifter. sr1200, This gadget employed three shift levers to accomplish everything that a single lever could do. The next lever is used for fourth gear and final lever for fifth. Each sun and planet gearset provides two speeds. Final drive ratio is 1:1. Multiple speed transmissions use multiplication of gears to create different speeds. 1.56% Uses 22 tooth planet gears, a 55 tooth sun gear and a 98 tooth ring gear. Please click here for CS3 Timing Chart (.pdf). For more specific information on any of these Lenco transmissions please refer to the Tabs below, or call our tech line at(909) 673-9080. The ST1200 transmission is pure Lenco through and through and is ideally suited for nitrous, blown, injected and carbureted engines producing up to 1200 HP and 900 lb ft of torque.