4. Transaxle and Clutch

• 3rd gear GM 3884617
• Countershaft GM 3884614

Set differential loose (.008 - .010 ring and pinion clearance). Use a low pattern on ring gear. Pattern will move to the center under torque. Use BFL lube or equivalent. Positraction should hold 50 ft-lbs minimum. The 3.55 ratio should be used for most tracks. Very long straights might need the 3.27.

Use aluminum flywheel - the steel ones flex under load and also come apart. Use new flywheel bolts.

Use 140 HP clutch GM 3829806. Cut off lobes on pressure plate (except where mounting holes are located) See arrows in Figure 2. Rebalance assembly. Use only a new GM disc or metallic disc.

Install a new clutch cable. These also break regularly.