74 inch Overhead Valve Piston Set STD 10:1

Piston set 3-7/16" bore standard size has a compression ratio of 10:1. Set includes Hasting 3 piece rings, 2 wrist pins and 4 circlips.
**Note:Run engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears, in order to properly break-in new pistons and rings. Bore size is 3.4380"-3.4385" inner diameter.