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Ok my question is i have a 500 ci with the th 400 tranny..................will my tranny bolt up to a 350 or 400 motor............... and will it drop right in my car with no welding..............and what yr to look for
 

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do a 400/400 combo, best of both worlds it will bolt up if its the gm bellhousing, some 400's have a olds,buick,and pontiac housing tho
 

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Originally posted by poppo2_4@Jan 4 2009, 10:47 AM~12600506
so what your saying is my th 400 will bolt up to a 400 buick motor................
that depends on the bellhousing holes, you need to find out if its gm only or universal Buick .Olds . or Pontiac bolt
 

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Originally posted by DEAD PRE$IDENT$@Jan 4 2009, 11:07 AM~12600574
that depends on the bellhousing holes, you need to find out if its gm only or  universal Buick .Olds . or Pontiac bolt
GM Only?? that's a new one
 

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everything should bolt right up. the 500 and 454 are big blocks, so the motor mounts should be the same. i dropped a 351 cleveland in an old 1979 F-100 that originaly came with a 302. i had to do a small mod to the motor mounts, but it all went together. gm is much the same. remember, these are parts bin cars. buick, olds, gm they all had many different engine and tranny combo's. most were interchangeable.
 

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Originally posted by racerboy@Jan 4 2009, 12:26 PM~12600880
everything should bolt right up. the 500 and 454 are big blocks, so the motor mounts should be the same. i dropped a 351 cleveland in an old 1979 F-100 that originaly came with a 302. i had to do a small mod to the motor mounts, but it all went together. gm is much the same. remember, these are parts bin cars. buick, olds, gm they all had many different engine and tranny combo's. most were interchangeable.
All of this info is wrong.

The 500 motor mounts won't work on any Chevy. The TH400 that is bolted to the 500 won't work on any Chevy, either. The trans has the "BOP" bellhousing, and the Chevy has its own pattern. To put a 350 or a big block Chevy in, you need the 5.7 mounts from the 91-92. With a 350, you could use a Chev pattern TH350, 700R4/4L60, 200 4 R (they have a universal pattern), or even a Powerglide. With a big block, I would go with a TH400.
 

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Originally posted by biggeazy-e@Jan 4 2009, 11:59 AM~12600755
GM Only?? that's a new one
i wasnt thinking,i just ment to say it all depends on the bellhousing :biggrin:
 

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Originally posted by poppo2_4@Jan 4 2009, 08:39 AM~12600488
Ok my question is i have a 500 ci with the th 400 tranny..................will my tranny bolt up to a 350 or 400 motor............... and will it drop right in my car with no welding..............and what yr to look for
:uh: theres and adapter plate for the TH400 that would go to a B.O.P or a different one for a Chev...but u said a 454 or a 350 chev? or a 400 SB chev or 400 pontiac? two completely different 400's...if u want cheap and easy keep it a crate 350 chev and that TH400 u got get the different adapter plate...
 

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Originally posted by DEAD PRE$IDENT$@Jan 4 2009, 04:19 PM~12602436
i wasnt thinking,i just ment to say it all depends on the bellhousing :biggrin:
I knew what you meant. :biggrin: :biggrin:
 

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Why the hell would you pull a Cadillac 500 out to replace it with a small 350 or 400? Replace it with another 500 or a 472. Everybody puts a GM motor in their Lacs you should keep it all Cadillac. I just put a 472 in my 80 Coupe and nobody expects to see that when I pop the hood. Best thing about it is it dropped right in, the only thing I had to do was grind down the front bolt on the passenger side A arm mount to clear the manifold.
 

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Originally posted by jayoldschool@Jan 4 2009, 03:14 PM~12602413
All of this info is wrong.

The 500 motor mounts won't work on any Chevy.  The TH400 that is bolted to the 500 won't work on any Chevy, either.  The trans has the "BOP" bellhousing, and the Chevy has its own pattern.  To put a 350 or a big block Chevy in, you need the 5.7 mounts from the 91-92.  With a 350, you could use a Chev pattern TH350, 700R4/4L60, 200 4 R (they have a universal pattern), or even a Powerglide.  With a big block, I would go with a TH400.


I COULDNT HAVE SAID IT BETTER MY SELF
 

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Originally posted by crucialjp@Jan 5 2009, 05:52 PM~12613826
Why the hell would you pull a Cadillac 500 out to replace it with a small 350 or 400? Replace it with another 500 or a 472. Everybody puts a GM motor in their Lacs you should keep it all Cadillac. I just put a 472 in my 80 Coupe and nobody expects to see that when I pop the hood. Best thing about it is it dropped right in, the only thing I had to do was grind down the front bolt on the passenger side A arm mount to clear the manifold.

I THINK CADILLAC IS ALSO GM
 

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Originally posted by Sleepy G@Jan 5 2009, 06:56 PM~12613848
I THINK CADILLAC IS ALSO GM
Yeah, I heard they acquired Cadillac a year or two ago.
 

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YEAH IT A GM!!! I PUT A 350 IN MY 83 COUPE AND I JUST TOOK THE MOUNTS, BOLTED THEM TO THE MOTOR SAT THE MOTOR IN THE CAR WITH THE TRANNY, MARKED MY HOLES AN THERE YOU GO
 

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Originally posted by biggeazy-e@Jan 5 2009, 07:51 PM~12615061
Yeah, I heard they acquired Cadillac a year or two ago.

i could have sworn they were just talkin about it

i didnt know they did merge :uh:
 

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Originally posted by poppo2_4@Jan 4 2009, 10:47 AM~12600506
so what your saying is my th 400 will bolt up to a 400 buick motor................
if its a 400 buick it will
 

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Originally posted by Sleepy G@Jan 5 2009, 08:57 PM~12615145
i could have sworn they were just talkin about it

i didnt know they did merge  :uh:
Seriously? I could've swore I saw the GM logo on a 2012 Cadillac concept. Maybe they're still hoping the deal goes through?? That'd be cool, to go to an auto show and see the Cadillacs parked near the GMs, and not all the way in the back. :)
 

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are you guys kidding? cadillac IS owed by gm. so is chevrolet, buick, pontiac, and oldsmobile (now defunct) they also own saab (why i have no idea)
 

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Discussion Starter #20
Well i got a 1968 500 bored 40 over, head done, headers, supper 44 flows, quafrajet 4 barrel,518 lift crane cam< 3 stall convertor, x pipe etc but still no getting the lope that i would get from a 350 or 454 chevy......................oh yeah all this is in my 84 deville
 
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