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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: chevman1979 on March 10, 2008, 10:51:27 pm

Title: th400 to a th350
Post by: chevman1979 on March 10, 2008, 10:51:27 pm

Just recently swapped out my bad th400 with a th350. It bolted right up, but now I'm having driveshaft problems. the th350 i got is a 9inch tail shaft, so its a bit longer then my th400...i was gonna have the driveshaft shortened but the u-joint sizes are different. My existing u-joints are 1.25nch dia. the yoke for the th350 are 1 inch dia. Do i need to get a different driveshaft to make this work???

1979 chevy c20 2wd
350 5.7

Title: Re: th400 to a th350
Post by: Blazin on March 11, 2008, 12:55:29 am

You should be able to order a u joint with two caps one size, and the other two caps the other size.

Title: Re: th400 to a th350
Post by: chevman1979 on March 11, 2008, 02:06:26 am

kool!...i didn't know they made those...thanks

Title: Re: th400 to a th350
Post by: VileZambonie on March 11, 2008, 05:05:46 am

I just did this here

http://forum.73-87chevytrucks.com/smforum/index.php?topic=7334.75