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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!
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#67748 10/25/2006 1:42 AM | Joined: Oct 2006 Posts: 126 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2006 Posts: 126 | I understand that these Chevys are old and mpg didnt matter then but i was wonderin what the average mpg a 47-54 chevy 3100 gets with a 235 straight 6. | | |
#67749 10/25/2006 1:56 AM | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | i got 9.5 in town and 12.5 on the road, i have fenton headers dual carbs dual exhaust 225/75/15 tires. i have not been able to test it since i installed the t-5 overdrive. been in the shop all summer. ron
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
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#67750 10/25/2006 12:04 PM | Joined: Sep 2003 Posts: 324 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 324 | 21.5 on the high way with a 235 dual Holley Webber carbs Fenton headers HEI dist. and a over drive transmission.
Tom | | |
#67751 10/25/2006 12:06 PM | Joined: Mar 2006 Posts: 483 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 483 | 10 mpg on my 216 53 3100 stock. | | |
#67752 10/25/2006 12:18 PM | Joined: Jun 2005 Posts: 1,756 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 1,756 | | | |
#67753 10/25/2006 12:19 PM | Joined: Jun 2005 Posts: 1,756 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 1,756 | Originally posted by 235 Fat Fenders:
21.5 on the high way with a 235 dual Holley Webber carbs Fenton headers HEI dist. and a over drive transmission.
Tom Unbelievable | | |
#67754 10/25/2006 4:29 PM | Joined: May 2004 Posts: 920 'Bolter | | 'Bolter Joined: May 2004 Posts: 920 | 15 - 17 in town driving. I also have an O.D., fenton headers, HEI, a stock waterheated intake with the stock rochester B, and radial tires. I get about the same on the highway, but that is about 65 - 70 ave. I'm sure it would be better if I would keep it at 55 - 60. | | |
#67755 10/25/2006 5:30 PM | Joined: Jul 2005 Posts: 1,158 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 1,158 | Depends upon how heavy your foot is...  I haven't been able to calculate mpg on mine because the speedo drive unit doesn't work. My grandpa says that he used to get about 15-20 depending on load, and how high he revved it. | | |
#67756 10/25/2006 8:10 PM | Joined: Apr 2005 Posts: 345 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 345 | I don't have my speedo hooked up either since the old cable doesn't fit my T5. With an overdrive I imagine there is a huge difference between street and highway driving. If I had to guess, I probably get 13 on the street and 20 on the freeway. | | |
#67757 10/25/2006 8:37 PM | | Anonymous Unregistered | | Anonymous Unregistered | let me tell you about this date i went on last night!!!!!!
tony'n(wet}weatherford | | |
#67758 10/25/2006 8:46 PM | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 |
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | |
#67759 10/25/2006 9:05 PM | Joined: Aug 2002 Posts: 455 Shop Shark | | Shop Shark Joined: Aug 2002 Posts: 455 | Got a stock driveline with 3.55 rear.
Late 235 with duals intake and exhaust.
No head work, no cam upgrade.
18-20 mpg freeway
14-16 mpg city (4000 ft altitude)
All depends on your tuning abilities and the right carburetors, with a good engine. | | |
#67760 10/25/2006 9:13 PM | Joined: Oct 2002 Posts: 4,066 Bolter | | Bolter Joined: Oct 2002 Posts: 4,066 | hey, we forgot to say..........a big welcome to the bolt.. .........mine gets about 16-21 depending if you are in the city or on the hiway......
when I had the enclosed drive and with patricks 3:55 I still only got about 10-12......
nice to have another tx aboard....
Redryder pixMy HotrodA veteran - whether active duty, retired, national guard, or reserve - is someone who, at one point in his or her life, wrote a blank check made payable to The 'United States of America', for an amount of "up to and including my life."I am fighting cancer and I am winning the fight | Pain is part of life; misery is an option. | | |
#67761 10/26/2006 10:21 PM | Joined: Sep 2003 Posts: 324 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 324 | gatzim, that is the mileage I got on the trip to the Stovebolters convention in Kansas City. With the overdrive and a 3.90 rear end. In OD the final drive is 2.73 I just had the speedo calibrated and could not beleive it myself.
Gotta love it.
Tom | | |
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