SGP93GSX the vortec heads didn't come out until 96 so there really wouldn't be any benefit to swappin the heads over the 90 model heads weren't that great.
SGP93GSX the vortec heads didn't come out until 96 so there really wouldn't be any benefit to swappin the heads over the 90 model heads weren't that great.
What? Really?Originally Posted by 1994silverado
Just buy a complete GM HP crate engine. You'll have a proven performance package with no issues.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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