98 silverado exhaust woes

[awbrown]

UPDATE .. I did soak the flanges with pb , then used the air hammer with a chisel bit on it and they did come off.. the one I broke was also a easy fix , midas at the end of the street had a 3 bolt steel flange tha was split in the middle and heald together with 2 5/16 bolts ,worked like a breeze..

I had a shortblock and a set of vortec heads that I threw together and did a quick break in on my buddys dyno to confirm it had no leaks etc (dyno'ed with a carb) ,it was nice to get everything hooked up while standing in front of the engine as opposed to pulling the intake while the red was in .. I think If I do any work like that again I will remove the stuff off the front and stand instead of lay over the engine...