Piston Kit 74" +.060 8.5:1

Replica 3-7/16" bore piston set has a 8.5:1 compression ratio and is oversize .060. Piston set includes Hasting rings, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast.
The skirt dimension across the widest part of the piston measures 3.485". **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.