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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!
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| | | | 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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