LS Swap Crankshaft Pilot Extension For Early Non-LS GM Automatic Transmission

This LS swap crankshaft pilot extension (4749E) ensures proper alignment and smooth operation with your vintage ride. It is an excellent addition to models with early GM automatic transmissions. This steel adapter sleeve correctly positions the torque converter pilot onto the rear of the crankshaft when mating an LS engine to a non-LS transmission. Perfect for short flange crank applications, this extension works with both OEM and aftermarket flexplates.

Features and Benefits:
- Designed for LS engine swaps with early GM automatic transmissions
- Works with Powerglide, TH350, TH400, 700R4, 4L60E, and 4L80E
- Properly aligns torque converter pilot to crankshaft
- Compatible with OEM and aftermarket flexplates
- Steel adapter sleeve for strength and durability
- Fits short flange crank LS engines
- Helps retain original transmission in swap applications

Vehicle Fitment:
- 1960-1987 Chevy C10s
- 1988-1998 Chevy C/K Trucks

Please Note: Ensure that the torque converter and flexplate have the same bolt pattern.