yet another MPG thread - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**N2TRUX** · 07-06-2010, 09:43 AM

My 77 has a GM Ramjet 350 that rated at 350 hp and 400 TQ. I am currently running 3.08 gears with a 700r4. How does it do on MPG? I have no idea, but I can tell you it puts a smile on my face every time I drive it. So I guess mine is getting at least 50 SPG (smile per gallon)....

swb85 · 07-06-2010, 10:04 AM

450hp/450tq 383ci with muncie 4spd, 3.42's and 28" tires and I average 14-15mpg mixed driving. I'll get 17 on a highway trip if I stay under 70mph. Someday I'll put a tko500 in it and start knocking down 20mpg.

tucsonjwt · 07-06-2010, 10:31 PM

83 C20 stock Mr. Goodwrench 454 (slightly bored over) rebuild with 4 spd granny and 4:10 and gear vendor: 11 city, 13+ highway (but can go down to 9 city when using it as a dump truck or idling a lot.)

85burb · 07-07-2010, 07:49 PM

7-8 mpg. 350/700r4/4:10 gears/ NP208/85 burb. Thats in town mixed punching on it and fuel sipping. 6.0L sitting on stand waiting for rest of parts. Will be carbed but hope to get same mpg with WAY more power. That will deff make the smiles per gallon go up.

powerdriver 1958 · 07-15-2010, 06:55 PM

Umm , I have a one ton....All you need to know is,It has 2 20 gallon tanks........Nuff said.

View Poll Results: Dis-Placed-Ment------what do you drive?
\| 6	3	4.00%
350	50	66.67%
383	2	2.67%
454	10	13.33%
other (please list)	11	14.67%
Multiple Choice Poll. Voters: 75. You may not vote on this poll

07-06-2010, 09:43 AM	#1
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: yet another MPG thread My 77 has a GM Ramjet 350 that rated at 350 hp and 400 TQ. I am currently running 3.08 gears with a 700r4. How does it do on MPG? I have no idea, but I can tell you it puts a smile on my face every time I drive it. So I guess mine is getting at least 50 SPG (smile per gallon).... __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

07-06-2010, 10:04 AM	#2
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: yet another MPG thread 450hp/450tq 383ci with muncie 4spd, 3.42's and 28" tires and I average 14-15mpg mixed driving. I'll get 17 on a highway trip if I stay under 70mph. Someday I'll put a tko500 in it and start knocking down 20mpg. __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

07-06-2010, 10:31 PM	#3
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,198	Re: yet another MPG thread 83 C20 stock Mr. Goodwrench 454 (slightly bored over) rebuild with 4 spd granny and 4:10 and gear vendor: 11 city, 13+ highway (but can go down to 9 city when using it as a dump truck or idling a lot.)

07-07-2010, 07:49 PM	#4
85burb Registered User Join Date: Dec 2009 Location: lindale,tx Posts: 2,373	Re: yet another MPG thread 7-8 mpg. 350/700r4/4:10 gears/ NP208/85 burb. Thats in town mixed punching on it and fuel sipping. 6.0L sitting on stand waiting for rest of parts. Will be carbed but hope to get same mpg with WAY more power. That will deff make the smiles per gallon go up. __________________ 82 c10 5.3/4l60 84 c20 5.3/sm465 85 chevy k10 suburban LQ4/4l60 91 chevy c10 suburban Lsa 5.3/4l60 2017 Silverado whipple 5.3 1964 Vw beetle 1974 vw beetle

07-15-2010, 06:55 PM	#5
powerdriver 1958 Kid's Mechanic Join Date: Nov 2006 Location: Kansas City Posts: 8,241	Re: yet another MPG thread Umm , I have a one ton....All you need to know is,It has 2 20 gallon tanks........Nuff said.



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