The CNC'd GM LS7 head is adequate for producing average power straight from the factory.  However, it is an entry level part that suffers from the relative inconsistency of large scale mass production.  Our latest offering is an excellent option for someone who already owns the CNC'd GM LS7 cylinder head.  Without a great deal of investment we are able to apply a superior port design.  Significantly increased performance coupled with vastly superior finish and consistency make this a phenomenally attractive piece for high end builders.  We can accommodate any application from utilizing factory GM components to all out road or drag race packages.  From 600 rwhp daily drivers to 750 rwhp race engines, this is a versatile and proven performer.

Pricing is for work applied to a pair (2) of cylinder head castings and components YOU supply unless otherwise noted.  We are happy to build your heads with whichever spring kit, valve, etc. you would like.


Machining & Labor Operations:

• 100% CNC Ported Exhaust Runners
• 100% CNC Professional Competition Quality Valvejob
• Factory Valves Cleaned & Precision Ground
• PCD milled to ensure flatness, surface finish, & achieve desired chamber volume (62 - 73 cc)
• Intake Flange, Exhaust Flange, and Valve Cover Rail PCD Milled to new surface finish specs

Machining & Labor Cost: $1195


Labor and Component Options:

Replace OEM guides with Full Bronze Guides & hone to ideal clearances - Cost: $250
Bronze Guide Liners installed & honed to ideal clearances to refurbish worn out guides. - Cost: $125

Manley Severe Duty Stainless Exhaust Valves - Cost: $230
Manley "XtremeAlloy" High EGT Stainless Exhaust Valves - Cost: $430
Ai Custom DLC coated Ti Intake Valves w/ integral Hard Tip Inserts - Cost: $1345

PSI 1511 MaxLife Endurance Spring Kit w/ OEM Replacement Seals. - Cost: $250
Manley 23622 Titanium Retainers for OEM, PAC, PSI, etc. beehive springs - Cost: $195
Lunati Gold dual valve spring kit w/ lightweight steel retainers.  Lift capacity to .660" - Cost: $225
Manley Nextek .660" Dual Spring Kit w/ Ti Retainers, Hardened Locators, Precision Locks, etc. - Cost: $525
Manley Nextek .700" Dual Spring Kit w/ Ti Retainers, Hardened Locators, Precision Locks, etc. - Cost: $625



Please Contact Us for shipping & turnaround quotes!