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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: kperk on March 20, 2017, 04:27:30 PM

Title: TH-350 Tailstock swap!!!!
Post by: kperk on March 20, 2017, 04:27:30 PM

Hello!!

I have an 84 C1500 with a 355 and a TH-350 with a 9" tailstock and a stock converter.  I am making this truck into a little street/strip project, and a buddy of mine has a freshly rebuilt TH-350 with a shift kit and stall converter in it for DIRT cheap! BUT it has a shorter tailstock!! Am I pooched OR can I just simply swap the tailstocks or am I basically have to completely rebuild the tranny?

Any info or insight would be GREATLY APPRECIATED!!!

Thank you!

Title: Re: TH-350 Tailstock swap!!!!
Post by: VileZambonie on March 20, 2017, 04:59:35 PM

The tailshaft housing correlates to the output shaft length. It would be cheaper to have your driveshaft resized.

Title: Re: TH-350 Tailstock swap!!!!
Post by: Irish_Alley on March 23, 2017, 09:43:40 AM

i ran into the same issue in my 86. the th350 in it was burnt up it had the 9". my buddy had a 6" so i had to find a new/used driveshaft. ended up finding a 2 piece in a bone yard and use that one

Title: Re: TH-350 Tailstock swap!!!!
Post by: hatzie on March 23, 2017, 11:11:55 AM

Just change the driveshaft and move the transmission crossmember. 

Pretty easy to do.