18-19 highway
18-19 highway
14.5 average, heavy foot. Frenchy, how the heck do you do that with the same power train as me? Or is that km?
99 Silverado 4.8l : Soon to be 80E swapped, then 6.0 swapped, ......
05 Yukon Denali 6.0l : Nelson Performance Tune, ......
8X S10 Blazer on a 8X 3/4 ton frame : 5.3l swapped, Nelson Performance tune, Schoenfeld LT's, 226/226 .598/.598 112, TH350, planetary doubler, NP 205, locker, spool, 38's, ......
I get 17 to 18 no matter how I drive. Completely stock 4.8.
With the 5.3 got about 14mph highway after the LS1 swap 18.5mph highway. 04 Avalanche w/3.73
The turbo 408 with 80e averages better than 14 MPG with my stupid driving style. It would probably get better fuel mileage with some tweaking of the tune. The 408 got about the same fuel mileage when it was in the 93 truck with nitrous, except at the track where you could watch the gas gauge drop after each pass down the track.![]()
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709