Cadillac Owners Forum banner

1 - 6 of 6 Posts

·
Registered
a 472 big block motor
Joined
·
2 Posts
Discussion Starter #1
so latlty i have been trying to put a cadillac 472 into my 83 chevy truck i built a 4x4 turbo 400 trans for it that came out of a truck but found out to day it wont fit, the bolt pattern is different. so did cadillac make their own 400 trans or can i take the tail shaft out of the 4x4 trans and put it into the 400 that came off the 472? really need some help thanks
 

·
Registered
'85 Fleetwood FWD
Joined
·
728 Posts
The Chevy bolt pattern is different than Olds, Pontiac, Buick , and Cadillac.
Like the TH700R4 overdrive was only made to fit a Chevy. The TH350/400 was made for Chevy, or BOP (Buick-Olds_pontiac) but also Cadillac. Don't know about swapping the case on your 4X4 trans. Some transmission shop may have the answer to that
BILL


I just remembered.... Flashcraft has an adapter for bolting the Caddy to a Chevy/GMC transmission. According to my cataog, they have an adapter.

You can get on their site at www.cad500parts.com The price in my old catalog is 129 bucks. includes bolt kit etc.
 

·
Registered
500 ci caddy in a custom pickup
Joined
·
13 Posts
I dropped a 500ci caddy into an early 90s chevy p/u. I am new to the wrenching game and relied heavily on the assistance of others; however, my impression was that the big block caddies use a standardized Buick/Pontiac/Olds/Cadillac bellhousing pattern. Hence, a Turbo 400 automatic will bolt right up to the back of the block as long as the proper Cadillac flexplate and torque converter are used. Of course, being new and lacking experience, I know even less about the 472s...but they use the same block....doesnt that mean that it should be the same pattern?

I am also unaware of the implications of 4x4....but since it is the standard pattern, you would think that a chevy 4x4 tailshaft and hardware would bolt up as well.....

Seriously, I am young and dumb....so, experts, please take it easy on me for any missteps!
 

·
Registered
500 ci caddy in a custom pickup
Joined
·
13 Posts
I looked up some stuff from my research when I did my swap:

The Turbo 425 front-drive automatic transaxle also fits these engines as used in the Eldorado, although a special dual-sump oil pan and pickup are used with these transmissions due to the required halfshaft clearance. Any rear-wheel drive engine can be converted to front-drive and vice versa if the proper oil pan and pickup are used, although 2 of the main cap bolts must be removed and swapped to mount the pickup's bracket. Another good thing about these engines using a Turbo 400 transmission is that a B/P/O/C patterned case can be stuffed with the Chevy 4x4 tailshaft and associated hardware for use in an off-road truck. The engine weight is approximately 600 pounds fully dressed and splits the difference between small and big block Chevy, so suspension modifications are not usually necessary. Transfer case choice for a 4x4 should be a 205, as fitted to some mid/late '70's Chevy 1 ton trucks. The 205 is a strong gear-driven transfer case and holds up nicely to the big Caddy's torque output.

I would post the link....but the forum keeps kicking me out (too green)!
 
1 - 6 of 6 Posts
Top