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Click on image for the lowdown. 
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| | | Forums66 Topics128,060 Posts1,055,839 Members48,427 | | 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: Dec 2003 Posts: 2,733 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 2,733 | A rule of thumb for driveshafts is 55" ctr/ctr of joint for a gas engine with a 3" tube and .083 wall which nearly all are. Diesels can go to 72" with a 4" tube and 2500 RPM. Set up the OD unit so that the driveshfts going in and coming out of it are the same, approx 2-3 degrees but measure the original angle first so that you maintain it. | | |
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