Ok, I'm lost on this one, I still need to change out the intake manifold gasket, but here goes. Mark and I just got my car running "properly" although it seems to run a little rich still. It would run fine. I have a Top speed intake mani and the holes are plugged in the bottom, the back two are hooked up, but it sounds like their is a leak somewhere. I can't quite feel it, nor can i squirt at it without seeing(with soap/water). It certainly seems to be on the intake manifold side though, because you can hear it coming from there. ALso if this helps, when it did run consistently it would backfire when i revved it to 3k. Any help is appreciated, thanks.