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Will the TH400 from a Supra fit on the LS1?

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Old Jul 28, 2009 | 08:53 AM
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Default Will the TH400 from a Supra fit on the LS1?

As the title says it all, I need to know whats the difference between the TH400 from a supra and the TH400 that has no overdrive... I mean, if I have a TH400 from a supra, will it work as a substitute for the 4l60e? what modifications are needed?

Thanks
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Old Jul 28, 2009 | 09:28 AM
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supras didn't come with GM TH400's. A GM TH400 will work though. People put TH400's and Powerglides in Supras, but they didn't come with them from the factory.
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Old Jul 28, 2009 | 12:41 PM
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Go to Yahoo and type "toyota supra use th400 trans" into the search engine. I got lots of good reading from doing it just a second ago.
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Old Jul 31, 2009 | 09:17 AM
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Will a BOP TH350 or a 200R4 bolt behind a 5.3 LS motor, reason I'm asking is I'm seriously considering about dropping a 5.3 LS truck motor into my 83 Regal Wagon where now a 3.8 resides, anyone have any info on this or have known someone that has done this to a G-body, looking for links and info on this,thanks.

Ron
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Old Jul 31, 2009 | 01:52 PM
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Originally Posted by ronbuick
Will a BOP TH350 or a 200R4 bolt behind a 5.3 LS motor, reason I'm asking is I'm seriously considering about dropping a 5.3 LS truck motor into my 83 Regal Wagon where now a 3.8 resides, anyone have any info on this or have known someone that has done this to a G-body, looking for links and info on this,thanks.

Ron
No, it will not bolt up.
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Old Jul 31, 2009 | 04:16 PM
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Originally Posted by Camaro396
No, it will not bolt up.
A 2004R will, since it is a dual bolt pattern (BOP and chevy)
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Old Jul 31, 2009 | 05:07 PM
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So then any Chevy trans patern will bolt up, yes the 2004R is a dual mounting, BOP and Chevy, so the a 350 with the Chevy pattern and we are good to go correct?? thanks

Ron
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Old Jul 31, 2009 | 09:32 PM
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Sort of. Not all the bolts will line up. I think I have like 4 bolts in my TH400 bellhousing to my LS1 motor.
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Old Aug 2, 2009 | 01:55 AM
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Originally Posted by Camaro396
Sort of. Not all the bolts will line up. I think I have like 4 bolts in my TH400 bellhousing to my LS1 motor.
You should have 5.
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Old Aug 2, 2009 | 03:26 AM
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Originally Posted by GMRACER13
You should have 5.
X2. The only missing bolt should be the top right bolt.
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Old Aug 2, 2009 | 11:51 AM
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I've got 5 in my TH350. The two on the left side above/below the dowel, two on the right side above/below the dowel, and the one at 11 o'clock(upper left side)
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Old Aug 10, 2009 | 05:25 PM
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okay, which is the best TH400, I mean which year, car should I get it from, were there any differences? cause 4l80e are better to be bought from 1997 up, is there any rule for the th400?
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Old Aug 11, 2009 | 06:09 AM
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Some where in the 80's GM went to a 5 bolt front pump. Earlier ones had 7. Also, Someone help me here, but some had 4 forward clutchs and some had 5. I think the 70's models had 5. Try to find one out of a big car or truck.
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Old Aug 11, 2009 | 06:28 AM
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Thanks for the reply bro... but I might have difficulty doing so, because the transmissions usually in here come from broken cars outside of Lebanon which means they don't even know where the hell they came from! so I guess I should try checking something else, something maybe more evident in the transmission unit itself...

Anyone?
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Old Aug 11, 2009 | 12:41 PM
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You can take any th400 and make modifications that exceed any factory th400.

To answer your question, no it does not matter what it came out of. What matters is how it's built.
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Old Aug 12, 2009 | 02:10 AM
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alright then thats the route Im taking, Im goin to try and install it stock, just to let the car move, no racing no nothing... just to take it and pass emissions and all so I can pay for some outstanding fees on it, then I will rebuild... so they are all the same in fitment and power?!
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Old Aug 12, 2009 | 05:54 AM
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Pretty much so. They do make Chevy bolt pattern along with B-O-P. But not both patterns on the same tranny. there is also the short shaft at 4" and the long shaft at 9". this would be the tailshaft length.
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Old Aug 12, 2009 | 07:41 AM
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B-O-P? I won't probably care for the tail length because I'm doing my own driveshaft cause I have an LS1 Nissan

Last edited by wajouba; Aug 12, 2009 at 07:47 AM.
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Old Aug 12, 2009 | 04:37 PM
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BOP means Buick, Oldsmobile, Pontiac. Those wont work on an LS1.
Can't be adapted either unless you cut the bellhousing off and use a readily available custom made bellhousing. Here in the US it's not worth it to adapt a th400 from bop to chevy.
A non sponsor makes them for Datsuns, fords, etc.
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Old Aug 13, 2009 | 03:01 AM
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Originally Posted by DarkBlueLS2
You can take any th400 and make modifications that exceed any factory th400.

To answer your question, no it does not matter what it came out of. What matters is how it's built.
But it would be better to get one from a chevy because the bolt pattern will fit the ls1 (especially the 98) with minimum modification right...
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