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02-14-2012, 10:56 AM #1
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- Feb 2012
- New Paris, Ohio
Converting from automatic to standard transmission. Driveshaft question.
Greetings. Hopefully, someone that has converted from an automaic to a standard transmission can answer this question. I have a 1984 C10 shortbed pickup with a 350 Turbo automatic transmission and I am wanting to replace it with a 4 speed standard transmission from a 1986 C10 long bed truck. My question pertains to the driveshaft. My hollander manual shows that the automatic and standard transmissions use different driveshafts. Will my automatic driveshaft work if I change the front yoke and u-joint - that is, put the standard front yoke and u-joint on the automatic driveshaft that is currently in my truck? Any suggestions? Thanks for your time and help. Joe
02-14-2012, 11:00 AM #2
Pretty sure you'll have to have the shaft lengthened. The manual tranny is shorter then the auto.
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02-14-2012, 01:35 PM #3
the length is a issue and the manual yoke is 32 spline like a th400 where the th350 is 27 spline.
the joint size varies, it most likely the th350 has a 1310 or 1330 series joint and the manual yoke should use a 1350 series joint
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02-15-2012, 06:15 AM #4
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- Feb 2008
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However most fab shops can make the correct lenght drive shaft for you.. we have one here that does anything to do with driveshafts at a pretty decent price.Mike
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