Yeah, 243 heads were originally Corvette LS6 heads and then they started putting them on the 6.0L GTOs minus the longer sodium filled valves. You'll lose some compression but be able to add more timing.
Yeah, 243 heads were originally Corvette LS6 heads and then they started putting them on the 6.0L GTOs minus the longer sodium filled valves. You'll lose some compression but be able to add more timing.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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