PRC CNC Ported LS3 Style 6-Bolt Cylinder Heads w/ TSP .660" Spring Kit and Titanium Retainers

SKU: 199-LS36B

Regular price $1,999.99 Save $-1,999.99

Only 0 items in stock!
Looking for great replacement LS3-style cylinder heads? Look no further than these fully CNC ported 6-bolt cylinder heads!

Inspired by a factory GM LS3 cylinder head casting with extra head bolts, this new cylinder head option provides maximum value for customers wanting to upgrade from stock cylinder heads on a budget.  Available with stock GM or aftermarket valves, there's a configuration for virtually any application!


 Stock Valve Weight

 Stainless Valve Weight

Hollow Stem Valve Weight 







  • 2.165"/1.60" Valves
  • TSP Spring Kit w/ PAC Valve Springs & Titanium Retainers
  • Completely Assembled & Setup To Your Specs


Service Includes the following:

  • CNC Valve Job
  • CNC Porting
  • CNC Chambers
  • Milling to customer's desired combustion chamber volume
  • Fully Assembled


Dyno Tested 25+HP Gains Over Stock 6.2L Cylinder Heads!

 LS3 Intake LS3 Exhaust
       cfm  cfm
   154  115
 223  170
   282  198
 .500      324  211
 .600      351  228
   358  232