bought a 350 chevy acted just like that after boys dad put plugs wires cap an buttun on it,...5 and 7 plug wires were crossed,...swapped them then carryed the boys car back to him,..he keept the money anyway...lest i was straight with him...
had a 86 monteSS with 305 thay were werst for bad cams,...went to poping threw carb when it started going bad....