That was my first thought too. Timinig gear, nylon = skipped a tooth. The bummer about the gen I engine is the gear is not available except for the specialty places. The parts houses all show the chains as being the same as Gen II engines. No gears though. -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 -------------- Original message ---------------------- From: "Graham, George W (GE Infra, Energy)" <george.graham@xxxxxx> > I once had a '57 Chevy with a high-mile 283 in it with exactly these > symptoms. Turned out to be the timing chain had jumped only one cog on > the cam gear, and stayed there. I guess one cog is enough to get the > valve timing hosed up enough to have no guts, but still idle somewhat > OK. _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list