With the 440 my best 1/4 time was a 15.7 @ 84 getting 9 mpg's

this STOCK ls1 with headers has been 14.0 @ 94 getting 17mpg's, still needs tuned and I haven't hooked up my right bank 02 or my intake air temp sensor yet...need to get that done soon!!!

truck is also 540lbs lighter vs old setup...