TH400 trans - help please
I don't know anything specifically about the Caddy TH400's of that era..... but you need to make sure the bolt pattern on the bell housing area for Chevy/GMC engines.
There are two versions of TH400's/350's... one that fits Chevy engines & one for Buick Olds, & Pontiac.... I do not know where Caddy fits into this, but my gut tells me it would be the B.O.P.
version, especially since someone told you you would need an adapter plate.
IMO considering that the correct chevy pattern units are a dime a dozen, I would walk away from this one unless it was almost free... then I would sell it to get a Chevy pattern trans
There are two versions of TH400's/350's... one that fits Chevy engines & one for Buick Olds, & Pontiac.... I do not know where Caddy fits into this, but my gut tells me it would be the B.O.P.
version, especially since someone told you you would need an adapter plate.
IMO considering that the correct chevy pattern units are a dime a dozen, I would walk away from this one unless it was almost free... then I would sell it to get a Chevy pattern trans
Last edited by LT1 Abuser; Jan 26, 2004 at 11:36 AM.
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ricks95TA
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Jul 23, 2015 12:59 AM



thanks guys.
