For All Your High Performance Needs

For All Your High Performance Needs

Diamond 12957 Forged Pro-Filer Hitman 12 Degree Dome Pistons 4.625 Bore

SKU: DRP-12957


Availability: Out of stock

Quick Description

Chevy BB, Bore 4.625, Stroke 4.750, Rod Length 6.700, Dome +10cc, Set of 8
Forged Diamond Dome Pistons for Pro-Filer "Hitman" 12 Degree Series Cylinder Heads. .043 .043 3/16 ring land with added gas ports for maximum ring seal. Compression ratios figured for .005" to .020" deck height @ 9.800" and 10.200" figured with 11.3cc gasket volume. Top ring moved down from piston crown .340". Valve relief depths .310" intake and .098" exhaust. Premium H-13 Tool Steel wrist pins are included.

Compression Ratio with 64cc Heads 15.6:1
Compression Ratio with 72cc Heads 14.4:1
Quick Information

Additional Information

SKU DRP-12957
Manufacturer Diamond
Vehicle Make Chevy BB
Bore Size 4.625
Wrist Pin Size 0.990
Piston Material 2618 Forged
Compression Height 1.120
Piston Ring Size .043 .043 3/16
Piston Type Dome +10cc
Rod Length 6.700
Crankshaft Stroke 4.750
List price No