: 1980 thru 1992 Frames?



81fleetwood
03-15-07, 07:30 PM
Does anyone know if the Frame are the same from 1981 thru 1992? I have an 81 2 door fleetwood and was wondering if a 90 thru 92 four door frame would fit under my 2 door body?

Cadillac Giovanni
03-15-07, 07:38 PM
I want to say that the coupe frames would be different from the 4 door frames, but I'm not sure. The source I have lists both the overall length and wheelbases being the same for both the coupe and sedan, so you may be in luck. Someone else might know more than me...

81fleetwood
03-15-07, 07:43 PM
I am also wondering if the body mounts are in the same places?

Benzilla
03-15-07, 10:06 PM
As far as I know it should bolt right up. I know it's been done before, so it can't be that hard.

cadillac_al
03-15-07, 11:07 PM
They are the same wheelbase? I thought the coupes were a little shorter.

Benzilla
03-15-07, 11:37 PM
Nope, this was back when you could actually get a FULL SIZE coupe. I never got the idea of shortening coupes. I want a big car without having a sedan.

81fleetwood
03-15-07, 11:49 PM
Now I just have to find a 90 thru 92 with the chevy 350.

sizanjdf
03-16-07, 02:04 PM
wouldnt it be easier to just put a 350 and a new tranny in than swapping a whole entire body?

81fleetwood
03-16-07, 04:16 PM
Yes and no. I would still have to pull the body off the frame. I want more than just the motor and trans. I want the front clip the mouldings, maybe the dash rear bumper pad, 350 wiring harness. I also want to restore the frame and suspension and basically have a new rolling chassis and then just put my 2 door body on to it. I want to build it the right way from the ground up. I want the drive train of a 90 thru 92 but in a 2 door. Cadillac could have saved me time if they would have just made a 2 door fleetwood in 90 thru 92. Also I could still drive my coupe until the frame was ready for the body which mean I won't have to go cadillacless.

Benzilla
03-16-07, 04:22 PM
I think that's an awesome idea. I've actually thought of doing the same thing to my '90 Brougham. Same car, just with two doors.

caddycruiser
03-16-07, 07:01 PM
Yep, it's been done before in various iterations, and is a GREAT idea. I love '91/92 coupes "made" as they should have always been in the first place, and it's always something I'd like to have one day.

Benzilla
03-17-07, 10:22 AM
Some inspiration.

http://i24.photobucket.com/albums/c40/Cadillac_guy/2_dr_056.jpg
http://i24.photobucket.com/albums/c40/Cadillac_guy/2_dr_075.jpg
http://i24.photobucket.com/albums/c40/Cadillac_guy/2_dr_079.jpg

Destroyer
03-17-07, 10:35 AM
Yep, it's been done before in various iterations, and is a GREAT idea. I love '91/92 coupes "made" as they should have always been in the first place, and it's always something I'd like to have one day.I've seen them too and they look great. One I saw on ebay or even here looked like it was a factory 91/92 coupe and even had the newer dash and all the updates. Putting the body of a coupe on a 91-92 frame is a pretty good idea but if the frame is the same on the 94-96 models why not put the coupe body on an LT1 frame?. Thats something I have not seen done before and I'm sure most of the interior parts from the newer one would go in the coupe to.

caddycruiser
03-17-07, 11:20 AM
I've seen them too and they look great. One I saw on ebay or even here looked like it was a factory 91/92 coupe and even had the newer dash and all the updates. Putting the body of a coupe on a 91-92 frame is a pretty good idea but if the frame is the same on the 94-96 models why not put the coupe body on an LT1 frame?. Thats something I have not seen done before and I'm sure most of the interior parts from the newer one would go in the coupe to.

That's more difficult, for obvious body and such reasons, and also because the frames may not have the same dimensions. I guess it wouldn't be too hard to do a LT1 drop in after the fact in the old body, though, if wanted.

As is, doing the swap of '91/92 trim, wiring, electricals and all into an 80's coupe is pretty self explanatory, and not all that bad once the old stuff is gone and the new stuff can just start being bolted on...with bodies and frames almost identical, it's a no brainer conversion if you have the time, money, and parts.


Some inspiration.

http://i24.photobucket.com/albums/c40/Cadillac_guy/2_dr_056.jpg


Yep, bingo. Still not a huge older body style fan, but the uniqueness of making a later model coupe is quite attractive.

81fleetwood
03-17-07, 01:30 PM
Wow that is a sweet coupe. I like it better because it looks stock not a lowrider as usuall.

81fleetwood
03-17-07, 01:40 PM
Most caddys that I have seen have all the updates of the 90-92 fleetwoods but have never heard of anyone using the frame. That is why I originally asked the question.