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Author Topic: gas millage  (Read 3225 times)

Offline JJSZABO

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gas millage
« 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
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Jeff

86 Chevy C-10
350, TH400
Ex father and son project (son lost interest)

Son regained interest when truck was almost completed

Offline VileZambonie

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Re: gas millage
« Reply #1 on: June 15, 2007, 09:29:06 pm »
I get 4 gallons to the mile unless I drive fast  ;D
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 75 C20

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Re: gas millage
« Reply #2 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?
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1975 Custom Deluxe 20 350 SM465 2WD Longbed
1979 Custom Deluxe 20 400 SM465 2WD Longbed
1968 Custom Sport Truck 20 327 TH400 2WD Longbed
1985 Silverado 10 305 700R4 2WD Longbed
1969 Pontiac GTO 400 Turbo350
2008 GMC 2500HD 6.0 6spd 4X4 Longbed

Offline Captkaos

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Re: gas millage
« Reply #3 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.
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Offline Lt.Del

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Re: gas millage
« Reply #4 on: June 19, 2007, 07:40:44 pm »
My 91 5.7 4x4 3/4ton sub gets 14.3 on the interstate last time I checked.  IN the city, well, I am afraid to check.
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Offline Stewart G Griffin

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Re: gas millage
« Reply #5 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.
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