Look at surgery to the 1 7/8" TTI's it took to get them in the Rocky!
I ruined a new set of 2 1/8" Proparts headers I got from Mazzolini trying to get them in my Demon with the 540 / 440-1. My dents were made with a torch, air socket on an extension, and a hammer so they were nicely rounded. On the first pull to breakin the motor one of the exhaust gaskets blew on a smashed tube. The engine wouldn't get over 5500 RPM.
That SB chebby was making some good numbers and I am pretty surprised it didn't lose a bunch of power from the ex restrictions. My 540 didn't like the restrictions at all. Those headers are ruined.
The root cause problem was my motor plate that worked with the 500 and it's very nice headers is not locating the 540 where TTI wants it to be. I have now installed coil overs and no longer have torsion bars in the way.
