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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jan 2002 Posts: 2,839 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,839 | Saturday, after filling the tank, drove the truck to the San Francisco Farmers Market. Went 74 miles round trip running the 235 with 3.50 rearend and SM420 at an average speed of 55 mph. 16” tires. Per the tach, averaged at 2300 rpm. Yes, very slow but had no problem dealing with crazy drivers. What is the slow lane for anyways?
Yesterday decided to fill the tank again to check the MPG and seeing that the needle never dropped very much, was pretty excited. Never thought it would be that good. Then again, steady speed, very little stop and go action = yeah baby!
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Aug 2018 Posts: 760 'Bolter | | 'Bolter Joined: Aug 2018 Posts: 760 | My project will have the same engine / differential gears, but will have a 3 speed tranny. I hope I get mileage that good. I'll be a happy camper.
Mike Burns
1940 Chev 1/2 ton
1953 Chev 1/2 ton
1950 Studebaker Starlight Coupe
1947 Indian Chief
1943 Indian 741
| | | | | Joined: Oct 2021 Posts: 6,773 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,773 | That's pretty good. I've been averaging 14mpg (actually 13.8/13.9mpg) in my '50 216 3spd with 16" rims.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Feb 2016 Posts: 1,987 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,987 | Those are the same numbers that I get with my 2 ton Low Cab Forward with the 283, SM 420, 7.20:1 rear, 10R-22.5 tires. Only difference is the way the numbers are arranged, I think it's closer to 18.5 gallons per mile!
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | For years I argued for many on here that I was getting around 20 mpg on long trips. Well, I have an aftermarket odometer that was programmed wrong. So I threw out the mileage book and just fill up when needed. 
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Oct 2021 Posts: 6,773 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,773 | That's hilarious.
Fortunately I've actually verified my original odometer and speedometer against known distances, Google Maps, and other vehicles.
Last edited by Otto Skorzeny; 11/02/2022 2:10 AM.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Jan 2002 Posts: 2,839 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,839 | Glad to see that others have gotten decent mileage as well. BTW, Speedbox is a good phone app via GPS when checking the accuracy of your rig's speedometer and odometer.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Jun 2021 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2021 Posts: 157 | That's really not bad at all - best I ever got is 22ish mpg (overdrive) on a long autobahn trip at almost steady 55. | | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | I'd be ecstatic to get 12-15! Although, with a 2-ton, that weighs 9,000 pounds, it takes a bit to push it down the road! (and I drive faster than 55 on the freeway here, otherwise I'd get ran over!) | | |
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