: '77ing an '80



sven914
01-16-10, 01:43 AM
The other thread about '90ing a '77-'79 Hearse has got me thinking about '77ing an 80's RWD...

I'm not considering going all out and completely redoing the front clip, but ever since I got my car and then saw a '77-'79 Cadillac, I have wondered if the front bumpers are interchangeable.

I have always liked the complexity of the earlier bumpers.

http://i708.photobucket.com/albums/ww84/westernsm/Bumpers%20Front/76-79CaddFront6.jpg

I know that the ends of the bumper will extend over the ends of the clip and onto the fender, but I think that will match up with the vinyl fillers on the '80's fenders.

http://www.sunsetclassics.com/1977-cadillac-deville/images/1977-cadillac-sedan-deville.jpg

http://www.angelfire.com/wa3/caddyville/CSale/Image1.jpg

I'm not too sure about the way the grill fit. The '80's bumpers are cut low in the center to make the grill taller, where the '77 bumper is straight across. Might have to cut the grill in half.

http://carphotos.cardomain.com/ride_images/2/4542/3921/23854460005_large.jpg

http://www.imcdb.org/images/008/591.jpg

My questions are, will the '77-'79 bumpers even bolt up to an '80 chassis without having to change the sheet metal, and are the grill/bumper angles the same?

My plan is to do this on a an '80 or '81 Coupe de Ville, that I plan on installing a 500 in.

deVille33
01-16-10, 08:14 AM
The '80s bumpers are straight across the front edge, the '77 - '79 angle out to the center. They might bolt up, but they would look strange in that they would have seperate contours.

csbuckn
01-16-10, 08:44 AM
they will bolt on but you may have better luck cutting the grill rather than cutting the bumper. Then you can use the extra grill material to use in the inserts in the bumper

Bro-Ham
01-16-10, 10:51 AM
Get out your measuring stick. Why not just drive a 77-79? Put MPFI and a turbo on the 425 and you're all set! :)

sven914
01-17-10, 01:30 AM
Why not just drive a 77-79? Put MPFI and a turbo on the 425 and you're all set! :)

I honestly don't like the '77-'79 coupes. Just something about them doesn't look right. Plus having a 425 isn't as good as a 500, and having a 500 in a '77 isn't as gangsta as having one in an '81.

Here is a crappy photoshop of what it should look like:

http://carphotos.cardomain.com/ride_images/3/3489/1/33720000087_large.jpg

csbuckn
01-17-10, 01:49 AM
I do love the angle of the rear window on the 77-79 and the bench seats. A matching set is on the wish list.

Angry Matt
01-17-10, 09:08 AM
If there was anything I could do along these lines, would be to get one of those aluminum hoods to fit on my '81. Even if the center was taller I could use that for a ram air intake.

Bro-Ham
01-17-10, 11:44 AM
Sven, Here is a picture of the front bumper on my 79. Is the 80+ front grille and bumper contoured to as pronounced of a point like this? What you want to do could be a monumental undertaking to make it look right.

csbuckn
01-17-10, 12:13 PM
thats it, I want a 77-79 now. Between you and 77CDV, its hard not to want one. But the pic does clarify that you would need the complete front clip to make it happen, fenders and all.

Bro-Ham
01-17-10, 12:31 PM
CS, Even with a complete front clip I question that it will line up with the doors. The sheet metal seems to be styled differently between the two generations of cars. CS, have you owned a 77-79 Cad before?

sven914
01-17-10, 02:12 PM
Sven, Here is a picture of the front bumper on my 79. Is the 80+ front grille and bumper contoured to as pronounced of a point like this? What you want to do could be a monumental undertaking to make it look right.

http://www.cadillacforums.com/forums/attachments/rwd-19xx-1984-deville-fleetwood-1985/55166d1263746622-77ing-80-img_4454-40.jpg



The bumpers don't come to a point, but the grills do.

http://i127.photobucket.com/albums/p141/wildboar54/P9210055Small.jpg

Thats why I was wondering what the angle is on the '77 grills.

The '80's grills are about 17 inches from the center point to the edge of the header panel. Bro-Ham, how wide is half your grill.

Bro-Ham
01-17-10, 03:05 PM
Sven, close enough for government work - it's 17 1/2" on my 79.

sven914
01-17-10, 04:53 PM
Thanks.

Half an inch on each side shouldn't make too much of a difference in lining up the coutures. And it looks like only the last section on an '80's grill will have to be cut off.

My new Question is, should I go egg crate or water fall?

csbuckn
01-17-10, 05:19 PM
I have parted a 77, the interior was beyond saving but it was beautiful in its hayday. I have to put a big difference, interior wise, between the 77-79 and the 80. I do think if you have the fenders and hood, you could make it look good. did you see those Vikings?

Bro-Ham
01-17-10, 06:32 PM
CS, Are you talking to me about vikings? I'm from Minnesota but I'm not a sports fan so I didn't know they played - did they win?

Sven, Are you planning to fill in your own lower grille with trim to match the upper grille? Otherwise the 79 lower grille may be close to the grilles on the 81 and 87. I still think you're crazy to go through all the trouble to do this. What does the car look like that you're putting all this stuff on?

:)

sven914
01-17-10, 07:00 PM
Oh... I don't have the Coupe yet and probably won't until after the world ends. This is just a little planning to make the voices stop yelling at me to go and build one right now.

I don't like the way the egg crate grills look on the '80's cars, but they look good on the '77's, so I'm probably just going to go with the egg crate grill. They might look better not being so tall.

csbuckn
01-17-10, 07:34 PM
we won tonight,now we're one game away from the superbowl. tough game ahead but I have confidence!! Sven, EGGCRATE of course!