Stock GM LS7?

[Bigbore500r]

Have the stock heads sent to WCCH. They will install new SS exhaust valves, Re-polish the factory intake valve stems to the correct RA finish to keep the guides from being torn up. Common problem with factory LS7 motors, especially when run hard. Supposedly this has been corrected by GM on the motors build within the last 2-3 years, but I cannot speak to that personally. Considering the price of these motors, its worth it for the piece of mind to me. When they stick in the worn guide and fail....it is a major motor explosion that usually windows the block.