installing TH 350
Instructor
Joined: Jul 2004
Posts: 245
Likes: 0
Originally Posted by Ratsirt
Has anyone ever installed a TH350 in place of a TH400 in early model C3?
The reason I am asking is I recently came across a great deal on a TH350.
Thanks
The reason I am asking is I recently came across a great deal on a TH350.
Thanks
Good luck,
Jeff
Race Director
Joined: Oct 2002
Posts: 12,065
Likes: 2
From: Smalltownville Michigan
Cruise-In 5, 6 & 10 Veteran
St. Jude Donor '09
good deal or not, look at an overdrive trans instead. if your'e gonna hafta wrestle that thing, may as well put something worth while in it..
Drifting
Joined: Mar 2005
Posts: 1,806
Likes: 3
From: Burlington WI
Race Director
Joined: Jul 2004
Posts: 12,703
Likes: 329
From: Scottsdale Arizona
Originally Posted by fl_rider
Transmission Dimensions:
http://www.tciauto.com/tech_info/trans_dims.htm
http://www.tciauto.com/tech_info/trans_dims.htm
Drifting
Joined: Sep 2004
Posts: 1,532
Likes: 4
From: Fairview Heights Illinois, near Saint Louis MO, STL C3 Shark
SOME TH350's will be direct replacement. two rear shaft sizes. I don't remember which is longer (400 or 350) but one of the rear-shaft lengths makes them compatable.
Thread Starter
Burning Brakes
Joined: Nov 2004
Posts: 821
Likes: 0
From: Ontario
Thanks for the replys,
the reason is I have a low time TH350 I got a good deal on from another vette owner and I did not realize that the unit in my vette was a TH400. I figured it would be a good time to install as I am also installing a 355.
the reason is I have a low time TH350 I got a good deal on from another vette owner and I did not realize that the unit in my vette was a TH400. I figured it would be a good time to install as I am also installing a 355.
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Drifting
Joined: Mar 2005
Posts: 1,806
Likes: 3
From: Burlington WI
Hey!!!
Originally Posted by ruby76
SOME TH350's will be direct replacement. two rear shaft sizes. I don't remember which is longer (400 or 350) but one of the rear-shaft lengths makes them compatable.
There is a difference in the location of the transmission mount on the 350 and 400 Turbo.
Granted the short tailshaft 400 is "pretty close" to the length of the short tailshaft 350 there is still a LARGE difference in the location of the rear mount.
http://www.tciauto.com/tech_info/trans_dims.htm
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
There are correct mounts and driveshafts available. 76 I think used both TH350 or TH400 with the same crossmember just different mounts off the crossmember. Be advised that you will also need a kickdown cable and appropriate carb bracket, TH400 had an electric kickdown. If it was me, I'd sell the "new" TH350 and get an overdrive trans while you are converting.
