TH350 driveshaft options - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ol' Red · 12-17-2015, 11:42 PM

I have an 85 half ton with a Th350. The old stock trans has the long tail shaft. The one that is going in has a lot of upgrades but it has the short tail shaft. Being that it is a long bed, stock is the long tail shaft. I don't want to take both transmissions apart to build an upgraded th350 with a long shaft. I need 72" driveshaft. Currently mine is 69". A local shop said the only way I can keep a one piece driveshaft that long is to go aluminum. That's fine but it's costly. Am I able to get away with putting a yoke on my stock driveshaft that is a few inches longer or do I need to go with getting a new shaft made? Thanks

12-17-2015, 11:42 PM	#1
Ol' Red Registered User Join Date: Feb 2013 Location: LaGrange, OH Posts: 17	TH350 driveshaft options I have an 85 half ton with a Th350. The old stock trans has the long tail shaft. The one that is going in has a lot of upgrades but it has the short tail shaft. Being that it is a long bed, stock is the long tail shaft. I don't want to take both transmissions apart to build an upgraded th350 with a long shaft. I need 72" driveshaft. Currently mine is 69". A local shop said the only way I can keep a one piece driveshaft that long is to go aluminum. That's fine but it's costly. Am I able to get away with putting a yoke on my stock driveshaft that is a few inches longer or do I need to go with getting a new shaft made? Thanks __________________ Ol' Red. 1985 GMC Sierra Classic 1500 2wd 305/th350/2:73 rear "never miss a good opportunity to shut up" "if you look back at your work and you aren't proud to you say did it then you better go back and do it over" "don't talk bad about farmers with your mouth full" Last edited by Ol' Red; 12-17-2015 at 11:51 PM.



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