NDFARMER95
Newbie
- Joined
- Jul 5, 2014
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Bought a 96 2500 EC/LB while back. Has the 5.7 with auto trans. Replaced intake manifold gaskets. Rolling on 265/75/16 at stock height. Temp gauge don't get over 165. Running 5w40 synthetic. Need to replace the fuel filter. But anywho, it gets like 12 mpg hand calculated. Then come to find out the speedo is 5 mph fast. So that would make my fuel mileage worse. My old 6.0 chevy got about this on 285's and 4 inch exhaust. Any ideas? It starts great every morning and runs great with 155k on it.
Before some keyboard crusader tells me its a 4x4 and it's going to get ty mileage, I have a duramax with a 6" lift and 35's also so I know what to expect, but these 5.7's can do better than 10-12.
Before some keyboard crusader tells me its a 4x4 and it's going to get ty mileage, I have a duramax with a 6" lift and 35's also so I know what to expect, but these 5.7's can do better than 10-12.