Quote Originally Posted by 36 sedan View Post
Do you have the stock mufflers on it?
No, it has some brand of turbo mufflers on it. I replaced the carb base gasket and that seemed to help the vacuum to shake around 13 , still a bit low I think. I have 9 at idle, and 39 total , not quite sure of the rpms cause I couldn't see the tack, it sounded like around 4ish. The part that I think is not right is when I hook it to manifold vacuum the timing goes all the way to 34, that seems like a lot. I moved the line to port vacuum now. The carb base gasket may have helped a fair amount, the A/C doesn't seem to bother it quite as bad and now when It's pulling hard I feel it surging a bit so I'm wondering if my fuel pump is getting weak. Here is a link of me running it, turn the volume up.I will check out the tuning link you gave me. https://www.youtube.com/watch?v=EahCVj8TEMI