PRC 6-Bolt 265cc LS7 w/ Titanium Intake/Hollow Stem Exhaust Valves, TSP .660″ Dual Spring Kit w/ Ti Retainers

The Precision Race Components LS7 CNC 265cc Ported Cylinder Heads combine a 6-bolt LS7-style casting with extensive CNC port development for increased airflow and performance. These cylinder heads are cast, machined, and completely assembled in the USA and are compatible with both standard GM 4-bolt and aftermarket LSX/RHS 6-bolt-style engine blocks.

Flow testing on a SuperFlow 600 with a 4.125″ bore plate showed intake airflow reaching 393 CFM at .700″ lift, compared with 353 CFM for the tested LS7 cylinder head.

KEY FEATURES

• 265cc CNC-Ported LS7 Intake Ports
• PRC 6-Bolt LS7 Cylinder Head Design with Thicker Deck Surface
• Compatible with Standard GM 4-Bolt and Aftermarket LSX/RHS 6-Bolt-Style Engine Blocks
• 2.205″ Titanium Intake Valves
• 1.610″ Stainless Steel Exhaust Valves
• TSP .660″ Spring Kit with PAC Valve Springs
• Titanium Retainers
• CHE Bronze Valve Guides
• Cast, Machined, and Completely Assembled in the USA

FLOW DATA

Flow testing performed using a 4.125″ bore plate on a SuperFlow 600.

BLOCK COMPATIBILITY

• Standard GM 4-Bolt LS Engine Blocks
• Aftermarket LSX 6-Bolt-Style Engine Blocks
• Aftermarket RHS 6-Bolt-Style Engine Blocks

Note: Valve spring lift ratings are based on the use of titanium intake valves.

Learn more about Precision Race Components cylinder heads.