Copper 2+2

[jasonreid]

http://cgi.ebay.com/ebaymotors/1986-Pon ... 27be51e9f7

Saw this on Ebay today. Looks nice and it appears to have some T-Tops too though the owner doesn't actually mention it.

 

[clean8485]

Interesting looking car. The T top setup is something that I heard that wasn't done on these cars, because the airflow in the car changes with the roof panels out, and in the 2+2 with the large rear glass, it can put excessive pressure on the rear window glass. Also, I'm curious about how the owner created the cowl induction hood-I'm not aware of any company that makes a cowl hood for a Grand Prix. Judging from what I can see in the photos, it looks like the console has been removed. There are alot of changes on the car. The owner got the production number incorrect as well-there were actually 1,225 2+2s built, as per Pontiac Historical Services

 

[jasonreid]

Yup. I wish we had a "like" option on these posts.

There was one that was manufactured with T-Tops during the prototype stage and it was in a GM museum for a long time. Not sure if it's still there or not but it was black. Actually come to think of it I believe it was a standard notch-back. Judging from how the T-Tops were put it in, it's definitely aftermarket. Notice the space between the windshield and the T-Tops is larger than a factory T-Top setup. Also the strip in the middle was narrower.

See here for GP hood scoops: http://www.laureneng.com/1282180.html

 

[clean8485]

I was aware of the Lauren Engineering hood scoops. I checked their site, and it says there that the scoops are either bolt on or mold onto the hood. I guess that maybe the owner molded the cowl induction scoop into the hood on the car. As far as I know, I'm still not aware of anyone who manufactures a 1 piece cowl induction hood for a Grand Prix. If anyone here can set me straight on this, please let me know. Still a neat car though.

 

[crazyliver]

Is airflow going to be that different with the t-tops out than just with the windows down? (I am planning to put t-tops in the 2+2 I am building.)

 

[clean8485]

I have no first hand experience with this, so I can't say for sure. I vaguely remember reading an article years ago about the airflow inside the car being different on the 2+2 than the notchback Grand Prix, because of the extended rear glass. Supposedly if the 2+2 body style car is equipped with a T roof, and the roof panels are out, there is more air pressure inside the car than on a notchback type car, and GM had some concerns about the rear glass possibly blowing out of the car on the 2+2. Apparently, this is why GM never offered T roofs on the 2+2. As I said before, I have no first hand experience with this, just something that I read. On a personal note, I've always been curious as to why GM never offered T roofs on the 2+2, when the cars were otherwise totally optioned out.

 

[Blake442]

Those are indeed the aftermarket C&C t-tops.

The likelyhood of ever going fast enough to even get close to causing an issue is about 0. :lol:

And Monte SS aero coupes were offered with t-tops from the factory...

 

[clean8485]

Blake, you're right, some Monte SS aerocoupes were built with T roofs. You're probably also correct, in that the chance of a rear window failure on a 2+2 with T roofs is extremely low. Keep in mind though, that the rear glass on the 2+2 is longer and shaped differently than the rear glass on the Monte aerocoupe. Maybe that had a bearing on the decision not to offer the T roof option on the 2+2. Then again, maybe not. As I've said, I'm not totally sure on this.