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Mod | | | Forums66 Topics128,151 Posts1,057,000 Members48,460 | | 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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| | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | If you're getting high rpm and poor mileage, you have a short gear, rather than a tall gear. 3.55:1 is a common choice for best of both worlds, but with the 9", you can go as high as 1.9:1, which was a factory option in the Lincoln Versailles.
I have to 100% disagree with the statement posted that modern transmissions are "made with stamped steel parts" and do not have the "nice machined parts" that old transmissions have. Todays transmissions have as many, if not more machined parts, often to far tighter tolerances than any trans ever put into a vintage vehicle. Its obvious you have never taken one apart. The 700R4 is full of corrugated sheet metal welded to disks for clutch packs. In the old days it was all machined. Go visit a transmission shop and ask to see them. Don't need to, as I have taken one apart.
Bill Burmeister
| | | | | Joined: Sep 2003 Posts: 2,384 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 2,384 | I'm inside for the night, but off the top of my head the burb with 3.73's has 275/60/15's, the pickup has 235/75/15 with 3.42, both have '80s 8" ralley wheels. Truck revs a tad slower at 70.
Last edited by 64fleetside; 08/19/2013 8:52 AM.
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