My engine is a 326, with the 2-speed super turbine trans. I put on a new poly trans mount (Energy) which I had read about being taller than the original... so figured if the trans could drop a bit, the headers would angle down too, possible solving a problem. But... the new Energy poly mount is less than 1mm taller than the original rubber.
I also thought maybe I have the wrong engine mounts (too tall again) - I bought them as 400 mounts, but I think they're all the same, and the headers are good for use on 326-455 engines.
The only other thing I can think of is the crossmember... If the humps were bigger then the pipes would fit under it, like the stock pipes. So... maybe the headers weren't designed with the 2spd crossmember in mind? Same with the MagnaFlow exhaust (2.5" dia).
Lloyd www.firebird67.com 67 Firebird 326 Coupe. Currently undergoing restoration.
