[BradZZ]

Will the RA manifolds that PY sells PART # RPE650H
FIT IN A 1986 Grand Prix with a Pontiac 400? w/ D-port heads 061's
PS are these exhaust manifolds iron or alum?

[Fast 82]

I am now producing G-Body headers please see parts for sale under the heading G-body headers are here for the pics.

Thanks,
Marc

[injdinjn]

I put heddmans on mine when we built it in 96. Had to change the mounting flange from 1/4 to 3/8. The flange still bends.
I think the solution would be bell flanges, I have slip in donut flanges at the collector

http://home.earthlink.net/~madmax0/gp.htm

That link will show the headers on the motor before it was installed.
The last bolt on the passenger side is a royal PITA

[dirty joe]

Originally Posted by injdinjn

I put heddmans on mine when we built it in 96. Had to change the mounting flange from 1/4 to 3/8. The flange still bends.
I think the solution would be bell flanges, I have slip in donut flanges at the collector

http://home.earthlink.net/~madmax0/gp.htm

That link will show the headers on the motor before it was installed.
The last bolt on the passenger side is a royal PITA

^^^^This guy has a SBC in his gp.

[injdinjn]

It came with one.