FHR Forged Pistons for Chevy 454ci feature a solid dome of .200'' and a bore of 4.290'' (+.040'').
They are designed for use with a 6.135'' connecting rod and a 4.000'' crank stroke.
The compression ratios are 11.8:1 with 96.5cc, 10.8:1 with 105cc, and 9.6:1 with 119cc.
Each package contains 8 pistons.
Technical specifications include premium 4032 alloy, a bore of 4.290'', a crankshaft stroke of 4.000'', and a connecting rod length of 6.135''.
The deck height is 9.800'', with a compression height of 1.645'' and a pin size of 0.990'' x 2.750''.
The pin location is centered, and the solid dome top measures .200'' with an 18.3cc one valve relief in a closed chamber design.
Intake and exhaust valve reliefs are not applicable.
The top landing height is 0.325'', and the ring grooves are 5/64'' top, 5/64'' middle, and 3/16'' bottom.
The gram weight is 657/141.
