PRC LS7 265cc 7.0L CNC Head Porting

LS7 Cylinder Head Porting Service – Customer Supplied Heads

Elevate your LS7 engine's performance with our Precision Race Components (PRC) LS7 CNC 265cc Porting Service. This service is for customer-supplied cylinder heads and includes CNC porting, a valve job, guide replacement, and optional milling. Our extensive R&D and dyno testing ensure industry-leading power and airflow gains, with flow improvements of up to 35 CFM over the stock GM LS7 head.

What’s Included in the Service?

• CNC Porting: Fully CNC-ported intake and exhaust ports for maximum airflow and efficiency.
• CNC Valve Job: Precision valve seat machining for enhanced sealing and performance.
• New CHE Bronze Guides: Replaces factory guides with high-performance CHE bronze guides for improved durability and heat resistance.
• Reuse Factory Valves: Retains factory 2.200" titanium intake valves.
• New Stainless Steel Valve Exhaust: Includes stainless steel 1.610" exhaust valves for improved durability.
• Optional TSP Spring Kit: Add PAC valve springs and titanium retainers for enhanced high-RPM stability.
• Complete Assembly: Heads are cleaned, ported, and assembled with premium components.

Proven Results:

The PRC LS7 cylinder heads deliver unmatched power and airflow, making them one of the most affordable and powerful LS7-based options on the market. Extensive testing ensures peak performance for street, track, and racing applications.

Flow Data (@ 4.125" Bore Plate, Superflow 600):

Important Notes:

• Customer Supplied Heads Only: We do not supply castings; this service is for customer-provided heads only.
• Shipping Instructions: Please remove all cylinder head accessories (spark plugs, coolant plugs, steam port blocks, etc.) before shipping.
• Disclaimer: Texas Speed & Performance is not responsible for any lost parts left on the heads.