Competition Cams 4797 Crankshaft Socket for Big Block Chevrolet
[Product Information]
- For Chevrolet Big Block
- 1.610 inch ID with 3/16 inch Keyway
- Specially designed 1/2 inch drive socket allows rotation of engine assembly
- Knurled retaining nut that holds degree wheel in place
- Can be loosened while on crank snout so that wheel can be turned independent of the engine when finding TDC
