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Click on image for the lowdown. 
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| | | Forums66 Topics128,049 Posts1,055,549 Members48,425 | | 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 | For a gas engine do not exceed 64" ctr/ctr and that is with a large diameter tube, the bigger the better for length. Diesel trucks with slower turning engines can be longer but best to assume 4000 RPM or more for a gas engine. There will be a limit on the tube size depending on the joint series/size. I'd used 1310 or 1350 Spicer for a longer 1 pc shaft in your truck which is likely larger than it was built with.
Always a good idea to talk to the local driveline shop before jumping in as there is a lot of bad advice out there. Use a tube /yoke [censored]'y as the starting point so there will only be one weld involved. Some guys will try to bill you for two welds. I did this kind of work for many years and owned a driveline shop so I do have some degree of knowledge of this. | | |
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