Description
4L60E / 4L65E / 4L70E Sonnax Smart-Tech Input Housing Kit with Heavy Duty Input Shaft, 77733-11KB.
Sonnax Smart-Tech input housing kit 77733-11KB makes room for a taller clutch pack anchored in place by a stronger backing plate — the most reliable way to increase clutch capacity and protect against destructive heat.
Smart-Tech input housing kit with heavy duty input shaft 77733-11KB fits 300mm non-reluctor style units. The high-strength shaft features many unique refinements available only from Sonnax, including a unique design that protects against failure from stress cracks. Both the housing and shaft also are available separately.
Physically larger clutch pack area for increased 3-4 clutch capacity without sacrificing clutch durability. Use your choice of:
-
- Eight .067″ frictions with seven .095″ steels
- Nine .062″ frictions with eight .077″ steels
Designed to fit 300mm non-reluctor-style units, this kit addresses six weak areas of the GM 4L60E, 4L65E, 4L70E input housing:
- flexing/bowing of the 3-4 backing plate,
- limited 3-4 clutch torque capacity,
- 3-4 snap-ring blow-out,
- input housing breakage near the input shaft spline,
- input housing fatigue failure, and
- input shaft failure.
Includes:
- Smart-Tech Input Housing with 300mm Non-Reluctor Style Input Shaft Assembly
- Bolt-on Anchor Plate
- 3-4 Clutch Apply Plate
- 3-4 Clutch Return Springs (10)
- Input Drum Reinforcement Sleeve installed
- Overrun Piston
- Overrun Piston Inner Seal
- Overrun Piston Outer Seal
- PTFE Impregnated Rear Stator Support Bushing
- Socket Head Cap Screws (15)
