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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 86silverado on November 20, 2011, 04:02:19 pm

Title: 700r4 to th350??
Post by: 86silverado on November 20, 2011, 04:02:19 pm

I have an 84 chevy half ton 2wd. has a 305 and a 700r4 right now.  we just put a 355 together for it and tranny in it now is slippin. i have a th350 that was just rebuilt, tailshaft is 9 1/4.,    I was wondering what ill need to change to make it work.  Will driveshaft and shift linkage work?

Title: Re: 700r4 to th350??
Post by: zieg85 on November 20, 2011, 04:09:23 pm

check the lengths of each transmission.  I know the short tail shaft TH 350 will replace the 3 speed "three on the tree" trans with no modifications.  The long tail shaft TH 350 works for the 700R4, same yolks.

Title: Re: 700r4 to th350??
Post by: 86silverado on November 20, 2011, 04:12:38 pm

so the 9 1/4 would be the long tailshaft?   and would shift linkages, lines etc need changed?  Someone was saying speedo wouldnt work right. both are cable though,  gear inside retainer might be diff

Title: Re: 700r4 to th350??
Post by: zieg85 on November 20, 2011, 04:27:30 pm

I don't know the lengths of the tail shafts but everything else should work fine.  I am going from a TH350 to a 700R4 week after next in my 85 C10.