What kind of gas mileage does a GMC truck get?
I have a 2003 2500HD with the 8.1L/Allison, and I get 10-11 mpg on the freeway. It does like gas. both of those trucks have a 5 speed allison though, dont they? if so, wouldnt the 6 speed get a little better than what you guys are getting?
What’s the gas mileage on a GMC 8.1 tune?
The stock 8.1 tune even has TqMgt with the Allison behind it! :read: The six speed Allison just has an extra OD, 0.61:1 from a 0.71:1 I recall. Nothing major. Should drop you 200rpm I’d venture to say. The 8.1/Allison should get similar economy as the 6.0/80E if not BETTER.
How many miles per gallon does an 8.1 liter Chevy get?
In fact, Chevrolet stopped manufacturing this motor after six years, possibly in part due to pressure to produce more fuel-efficient vehicles. On average, vehicles equipped with the 8.1 get less than 15 miles per gallon.
What’s the OD ratio on a GMC 80E?
That 80E has a shit OD ratio of 0.75:1 = high RPM on freeway over 65mph. I wouldn’t say no to an 8.1 with 4.10:1 gears. Just get some slightly taller tires on there versus those donuts to make it look like a real truck.
What kind of mpg does a GMC 2500HD get?
I run a 2001 GMC 2500HD,8.1,allison,4:10 out back and pull a 12000 5er and ave.9 mpg towing,solo is 15 mpg. But of course i’m not heavy on the throttle and run 65 mph.
How many mpg does a Silverado 3500 get?
I’ve got a 2001 Silverado 3500 cab and chassis with a custom built 11′ plumbing utility box on it I get on an average 7-8mpg. This truck weighs in at 10,500lbs.The best I ever got was 11-12mpg and this was total highway driving. However, I was doing 70mph with an 18′ bayliner ski boat behind it. The engine is a true work horse, I believe.
I have a 2003 2500HD with the 8.1L/Allison, and I get 10-11 mpg on the freeway. It does like gas. both of those trucks have a 5 speed allison though, dont they? if so, wouldnt the 6 speed get a little better than what you guys are getting?
What’s the gas mileage on a Chevy 8.1 Vortec?
Gas Mileage – 8.1 Vortec Obviously not an “engine problem” but potentially one of the most disliked aspects of the 8.1 engine is the gas mileage! With city driving, you can expect single digit numbers from 7-9mpg and highway will usually range from 12-14mi.