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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: JJSZABO on June 15, 2007, 06:50:00 pm

Title: gas millage
Post by: JJSZABO on June 15, 2007, 06:50:00 pm

how much mpg is everyone getting with a stock 350? i was wondering wha i will get once im done with my truck

Title: Re: gas millage
Post by: VileZambonie on June 15, 2007, 09:29:06 pm

I get 4 gallons to the mile unless I drive fast  ;D

Title: Re: gas millage
Post by: 75 C20 on June 15, 2007, 10:27:36 pm

in my 79 i think i get about 13ish but have never really figured it very close
wut kinda trans/ rearend you got?

Title: Re: gas millage
Post by: Captkaos on June 17, 2007, 07:51:23 pm

My '87 R10 Daily Driver gets 21.8mpg on the highway trips and about 18mpg around town, last time I checked it which was right after I got it.  It is a 305 though with TBI.

Title: Re: gas millage
Post by: Lt.Del on June 19, 2007, 07:40:44 pm

My  91 5.7 4x4 3/4ton sub (http://www.delbridge.net/suburban) gets 14.3 on the interstate last time I checked.  IN the city, well, I am afraid to check.

Title: Re: gas millage
Post by: Stewart G Griffin on June 19, 2007, 08:44:26 pm

If i'm calculating right, i'm getting about 20 on the highway.

This is the 260HP crate engine.

But i've got a lockup clutch AND 2.56 rear gears.  Plus, i don't drive fast.

Also, i have true dual exhaust and the pipes are pretty straight all the way to the rear bumper.  No headers though.