Start with the basics, check plugs, timing with & without vacuum advance hooked up. What carburetor & ignition does it have? Without more information, it' a little tough to try & help diagnose the source of the problem.
I had the plugs out for the compression test and they're fine, and the timing is 23* w/o vac advance. It's got a 750 vac secondary Brawler carb, mopar electronic ignition, and an MSD coil. I started with the idle mix screws at 1-1/2, they're out 3 turns now IIRC. It came with an 850 double pumper with a bog that wouldn't go away too.
It idled OK in gear yesterday. It idles at about 1k in neutral, drops down to about 500 in gear. I don't really trust the tach. It runs hot, it was > 210 when I parked it yesterday. Oil pressure is about 80 cold, 40 hot. The motor pulls good once I get it past the bog.
Compression averaged about 110, not good, but both that and low vacuum could be caused by the cam installation, right?
