Compression ratio
Are both trucks 4x4? Are both trucks 4L80e trans? Do both trucks have the same rear end gears? Are both quad cabs? It all adds up. Are you both running the same size tires?
Compression ratio
Are both trucks 4x4? Are both trucks 4L80e trans? Do both trucks have the same rear end gears? Are both quad cabs? It all adds up. Are you both running the same size tires?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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