TURBO 400 ???'s

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dickeymoore

G-Body Guru
May 6, 2009
924
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Atlanta,Georgia
I have a long tail turbo 400 transmission that came behind a sbc 400 engine and the slip yoke is small like a turbo 350 transmission its a 400 trans because the pan is shaped like the state of Ohio and I thought all turbo 400 transmissions uses the larger slip yoke any HELP?THANKS
 

1320John$$$

G-Body Guru
Sep 18, 2019
951
2,043
93
Pennsylvania
I have a long tail turbo 400 transmission that came behind a sbc 400 engine and the slip yoke is small like a turbo 350 transmission its a 400 trans because the pan is shaped like the state of Ohio and I thought all turbo 400 transmissions uses the larger slip yoke any HELP?THANKS
Take a picture of it let all of us see what you are looking at
 

565bbchevy

Geezer
Aug 8, 2011
9,590
12,612
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Michigan
Maybe it's a TH375A

I copied this from Hotrodders.com.
A longshaft TH-375A is like a longshaft TH-400, but it uses the smaller diameter yoke from the TH-350. Pan shape is that of the TH-400. The only difference is the output shaft and the tailshaft housing. The TH-375A has the guts of a TH-400 with the output shaft of a TH-350. It was used in full size cars, and it effectively shortened the drive shaft. The TH-375A is also often swapped into big cars as a direct replacement for dead longshaft TH-350s.
 
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64nailhead

Goat Herder
Dec 1, 2014
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If what 565 is saying is correct, then just swap the tail shaft. That’s a great time to have it gone through. TH400 kits are cheap and there are tons of people to do it.
 

-dw-

Greasemonkey
Mar 15, 2021
205
376
63
Central MN
Just worked on 65 Buick Wildcat the udder day. Short tail, small yoke, 400 pan and two piece driveshaft with cv in the middle.
 
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64nailhead

Goat Herder
Dec 1, 2014
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Upstate NY
Just worked on 65 Buick Wildcat the udder day. Short tail, small yoke, 400 pan and two piece driveshaft with cv in the middle.
I believe that is a Super Turbine 400, not the same as a TH400, but the predecessor. My 64 Wildcat has one of those, and I have a spare in the parts shed lol.
 
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