questions on a 95 K-2500

[Cornfield creations]

Looking at a 95 K-2500 w/ a 454. It has 157,000 miles and is around $5,500. It is pretty clean and no leaks.

My question is, how does these do on gas mileage? We were hoping for a 350 but these trucks rarely come up for sale where I live.

Is there a way to tweak the computer for better MPG?

Also if we wanted to, is it hard to swap engines with a 350 later on?

 

[sled_dog]

upper single digits I'd say. Low teens if you drive sane. My 350 powered 95 K2500 I used to have was lucky to do about 12. That had 4.10 gears though. I'm sure you COULD swap to a 350, but a 95 with a 350 would be a BIG mistake. I had one, believe me. The TBI 350 and the 4l80E are not meant to be put into a combo together. The transmission sucks the life out of the already weak engine. Ask about the trans, 157,000 miles may be pushing it on the trans. My 97 C2500 with a 350 and 4l80E had the trans rebuilt at 70k.

 

[AFUFO]

i keep hearing its actually about the same mpg, Maybe someone could confirm this. I heard GM tweaked it pretty much the most it could be tweaked.

 

[Cornfield creations]

so The power of the 454 vs. the weakness of the 350 about equal out? We were wanting to use it as a work truck and the pull our boat and box trailor. The power would be nice but our concern with high gas prices would suck us dry.

Then again the lack of power on the 350 would suck just as much if not more than a 454 just cruisin along.

Pulled the boat with out 76 k-10 w/ a 350 last night. Drank a half a tank in less than 40 miles, and it cried the whole way there and back.

 

[beater_k20]

i've pulled with my uncle's '92 K2500 (350/4L80E) several times. with the 3.73s its nothing really special, not quick out of the hole, not very good on the top end. however, it does the job quite nicely. averaged 14mpg on a 270 mile trip, down with the empty 4000# trailer, back loaded with a '94 Firebird (4200# comes to mind ) the car was loaded with stuff, and the back of the truck was loaded with furniture. probably had a good 10-12K load on it, and it didnt even hiccup once. maybe you've just got a bad one sled.

 

[sled_dog]

I'm not saying it wouldn't pull a load, but it was a dog + some when compared to my 97 Vortec. Eh maybe I'm just skewed since I'd never buy another one with that combo.

 

[tomseviltwin]

I bet gentle driving could get you 11-12 mpg. Much worse if you keep the hammer down.