LS3/L92 Cylinder Head Porting Service – Customer Supplied Heads

Transform your GM LS3/L92 cylinder heads into high-performance powerhouses with our professional porting service. Backed by extensive R&D on the flow bench and engine dyno, our ported heads deliver exceptional airflow and proven performance gains. With a dyno-tested increase of 25+ horsepower over stock 6.2L cylinder heads, this service is perfect for Corvette, Camaro, and other LS3-powered vehicles.

Why Choose Texas Speed & Performance for Porting?

Proven Performance: Precision Race Components (PRC) LS3/L92 cylinder heads are among the industry’s leading designs, offering unmatched flow and efficiency.
Fully CNC Ported: Advanced CNC machining ensures consistent and precise porting for maximum performance.
Premium Components: Includes new stainless steel hollow 2.165" intake valves and 1.60" stainless steel solid exhaust valves for improved durability and flow.
Tailored to Your Needs: Heads are cleaned, CNC-ported, and fully assembled with premium components.

Service Details:

Cylinder Head Cleaning: Heads are thoroughly cleaned and inspected before porting begins.
CNC Porting: Intake and exhaust ports are CNC-ported for optimal flow and velocity.
CNC Valve Job: Precision-machined valve seats for superior sealing and performance.
Full Assembly: Includes installation of new intake and exhaust valves for a complete, ready-to-install setup.

Optional Add-Ons:

TSP Spring Kit: Featuring PAC valve springs and titanium retainers for enhanced durability and performance.

Technical Specs (CFM Flow Bench Testing):

Lift (in.)	Intake (CFM)	Exhaust (CFM)
0.200	154	115
0.300	223	170
0.400	282	198
0.500	324	211
0.600	351	228
0.650	358	232

Important Shipping Instructions:

Remove Accessories: 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.