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Street/Strip 700R4: Starting at the "Front Pump", new (late design) seal, Teflon bushing, 10-vane rotor/slide assembly, Trans-Go Hi-Rev steel rings & priming spring, special heavy duty pressure regulator valve, Trans-Go HD pressure regulator spring, .296 intermediate/reverse boost valve, .500 main boost valve, both halves of pump machined flat with rotor to pump clearance set at .0015"-.002", and new stator support. This pump now will keep the pressure & volume up 7,800 rpm.
Reverse Input Drum: New GM or hand picked reverse/input drum, includes drum saver waved steel, instead of dished steel along with the Turbulator low-drag steels, and Borg Warner clutches.
Input Drum: The stock input drum starts getting into trouble at around 575-600 HP with a 10" or smaller diameter torque converter. I add a steel sleeve and remachine the overrun piston to prevent splitting the drum open from high loads. I add a Cryoed aluminum forward piston (to prevent cracking) to go along with the reworked overrun piston. It will hold around 650-675 HP, as long as a 10" or smaller diameter torque converter is used. New latest design 29 element input sprag, Borg Warner clutches for the overrun and late design Borg Warner forward clutch assemblies, 9 Borg Warner Hi-Energy clutches along with Kolene steels used in the 3-4 clutch pack, Trans-Go (Hi-Rev) heavy duty springs replace the OEM 3-4 and forward springs and 3-4 helper springs, (the Trans-Go springs prevent the 3-4 clutches from getting into trouble, due to centrifugal clutch apply up to 7,800 rpm, stock starts getting into trouble around 5,000 rpm), clearance for the 3-4 clutch pack .035 -.055, an OEM Viton input to output shaft seal is used, the Viton is soft (will withstand 650 degrees F.) and will conform to the output shaft thereby "guaranteeing" oil to the rear planet.
Rear Drive Section: Hand picked input sun gear, forward planet with batwing thrust washers, input internal gear, low/reverse support, reaction carrier shaft with "roller" bearing instead of metal thrust washer, a new GM heat treated sun shell, the latest design Borg Warner low/reverse roller assembly, Turbulator low-drag steels, Borg Warner clutches, hand picked or new rear planet, hand picked reaction sun gear, internal reaction gear, internal reaction gear support, new governor gear, a bronze rear case bushing, and a Teflon extension housing bushing and a Vamac (prelubed) rear seal.
2-4 Band & 2-4 Servo: Borg Warner Hi-Energy 2-4 band, new Corvette 2nd gear apply servo used in conjunction with the latest design Viton seals. An additional spring is added to the cushion side of the servo to help provide a smoother 1-2 apply at light throttle while still allowing a firm WOT shift.
Valve Body: We use the Trans-Go Performance (modified) Shift kit in conjunction with the large boost valves, Corvette servo, and the 9 clutch 3-4 pack. (This setup has proven to be the most reliable). We work with the accumulators to give the best possible part throttle shifts, and progressively firmer shifts with more throttle opening. A Sealed Power (zero-leak) filter is used.
The Case: We use the 1988-1992 transmission to start our builds with unless a special request to do otherwise.
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