[jlb169]

thanks for the help guys. rev limit set at 6000, double checked firing order, I didn't know the hyfire box was programmable. I don't see anything on Mallory's site for programing. I also had the box a couple of years before I used it during the build. Car just got titled last fall and put away before we got all of the kinks out. So I'm starting with a new build at this point. Other than slow runs to 50 mph I haven't pushed it during break in.
And yes if I was deaf I can feel it missing We changed plugs, reset valves, checked compression, and changed carbs. I'm begining to think I have a bad box too. Anyway to check it? Thanks! I really appreciate the help!