2038-3905 283 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 3.905 inch bore Pin Dia.: 0.927" Comp Height: 1.8" Piston Series Option:FX-1 4032 Alloy Approx Comp Ratio: 58cc-11

Approx Comp Ratio: 58cc-11

-5cc Flat Top

Custom Bore Size Option: This Option is perfect for Engine builders who do not want to unnecessarily oversize the cylinder bores on a block

Some Boost or NOS 8 CYLINDER SET

2038-3905 283 Small Block Chevy FX Series +4cc Dome Top SBC 23 Degree Forged Piston Set 3.905 inch bore Pin Dia.: 0.927" Comp Height: 1.8" Piston Series Option:FX-1 4032 Alloy Approx Comp Ratio: 58cc-11287 Small Block Chevy, FX, Comp Height: 1. 8, +4cc Dome Top, PIN: . 927", Full Floating or Press Fit, Ring Groove: 1. 2 1. 2 3MM, Stroke: 3. 000", ROD: 5. 7, Approx Comp Ratio: 58cc 10. 52, 64cc 9. 67, 70cc 8. 95 *