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Summit Racing Precision Cast Cylinder Heads: Airflow That Won’t Break the Bank

You don’t have to spend a lot of money to get power-building airflow. Summit Racing™ Precision Cast Cylinder Heads are cast from A356 aluminum using Permanent Mold "As-Cast" technology that precisely locates runners and combustion chambers for airflow that rivals CNC-ported cylinder heads. Other features include:

• CNC-finished head faces and bolt holes for accuracy and proper fitment
• Manganese bronze valve guides and interlocking ductile iron valve seats sized and installed by American craftsmen
• Competition-grade valve job
• Decks given a final pass for a superior finish that promotes better head gasket sealing

Summit Racing™ Precision Cast Cylinder Heads are finish-assembled in the USA with top-quality components like PAC Racing springs, ARP fasteners, one-piece 21 4N stainless steel valves, machined locks, Viton® seals, and chromoly steel retainers. You won’t find a better cylinder head for the price. Heads are sold individually.

Small Block Chevy
• 195cc intake and 76cc exhaust runners
• 65cc combustion chambers with 2.02" intake/1.60" exhaust valves
• Choice of 1.290" dual valve springs for hydraulic flat tappet or roller cams up to .600" valve lift
• Choice of straight or angle plug

Big Block Chevy
• 335cc intake and 140cc exhaust runners
• 122cc combustion chambers with 2.15" intake/1.88" exhaust valves
• 1.550" dual valve springs for hydraulic roller cams up to .725" valve lift

GM LS Cathedral Port
• 210cc intake and 82cc exhaust runners
• 64cc combustion chambers with 2.02" intake/1.60" exhaust valves
• 1.290" dual valve springs for hydraulic roller cams up to .600" valve lift

Small Block Ford 289-302-251W
• 185cc intake and 64cc exhaust runners
• 61cc combustion chambers with 2.02" intake/1.60" exhaust valves
• 1.290" dual valve springs for hydraulic roller cams up to .600" valve lift
• Designed for 1/2" cylinder bolt holes, reducer bushings required for 7/16" bolt holes

CHECK OUT SUMMIT RACING’S PRECISION CAST CYLINDER HEADS