Ford 393W Probe Pistons 4.000 X 3.850 X 5.956 -15.0 CC Dish Top. These probe industries forged pistons will give you 10.20:1 CR with 58cc heads. Compression will be 9.23:1 with 64cc heads. Ring size is 1/16, 1/16, 3/16. These pistons use ring set 315-0036 from Probe (also sold by Stage 3 Motorsports). Call 623-435-0166 with questions on this piston set. Price is for a set of 8 pistons w/o rings. If you need these pistons in .040 or .060 please list this info in the order notes section.
