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Mod | | | Forums66 Topics128,051 Posts1,055,714 Members48,426 | | Most Online14,466
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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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Dec 2003 Posts: 1,554 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 1,554 | Its all in the gear ratio.I had a 1998 Chevy 4x4 with the 350 engine and OD tranny.It got 20 to 21 MPG on the highway.The rearend was a 3.42.The next one was a 2001 4x4,it had the 5.3 engine with OD tranny.The best it ever did was 16 MPG.It had a 4.10 rearend.If you have a 2500,3/4 ton you are probably geared low.If you can get it geared to around 3.42 you will get a lot better gas mileage,however you wont win many drag races. | | |
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