Since you're running wide open with no pipes you are running waaaaay lean. The engine needs some back pressure. Running wide open with stock manifolds will also burn valves so don't do it.
Since you're running wide open with no pipes you are running waaaaay lean. The engine needs some back pressure. Running wide open with stock manifolds will also burn valves so don't do it.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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