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Mod | | | Forums66 Topics128,115 Posts1,056,627 Members48,450 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | I'm looking to sub out my rear end to get a higher gear ratio so I can drive on highway. I've heard on this site that a 72 nova rear end marries up well. Also a Malibu, but not sure which year. Is there a "top three" list?
Thanks! | | | | | Joined: Feb 2000 Posts: 5,228 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,228 | My'37 has a 1979 Trans Am / Firebird 10 bolt rear axle under it. It's the 8.5" ring and pinion axle. There are lots of gear choices with this size axle. I am using a 3.08 with 28" tall tires. 70 + mph is no problem for my 250, it will run all day long at 2400 to 2500 rpm.
I am also using standard 7" wide Chevrolet Rally wheels with a 2" wider fiberglass rear fender. In the last 15 years of having the truck on the road, no ones has noticed the wider fenders!
I did have to remove the spring perches and replace them with 1.75" wide ones from a trailer shop. The late models used wider leaf springs. You will need a different transmission and driveshaft.
Joe
Last edited by Joe H; 08/12/2015 2:06 AM.
| | | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | | | |
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