Excessive Motorsports LLC

Big Chief / Big Duke 18° - Dome - 9.800" Deck

Diamond Pistons - Chevrolet Big Block Big Chief / Big Duke 18° - Dome / 9.800" Deck Height

Designed for use with Dart Big Chief & Brodix Big Duke 18° cylinder heads
Top gas ports for maximum ring seal
Ratios configured for .005” to .020” deck height @ 9.800” and 10.200”
Premium .185 wall H-13 Tool steel wrist pins included
Gasket volume = 11.3 cc”s
Top ring down from piston crown = .340” @ 1.240” cd to 1.270”cd. .290”-.300” @ 1.120cd
Part numbers 12750-12764 designed for 2.400” intake and 1.950” exhaust valve sizes
Part numbers 12765-12770 designed for 2.450” intake and 1.950” exhaust valve sizes
Part numbers 12765-12767 designed with a full round skirt design
Valve relief depth = .315” intake and .068” exhaust

Displaying products 11 - 12 of 12 results

Show:

Sort:

Big Chief / Big Duke 18° - Dome - 9.800" Deck