If you have spark, gas, and air , then the timing has to be off? Is the dist. at no. one, chain jump a tooth. Didi it back fire? All I ever use is AC 43 0r 44, or NGKs. --- On Tue, 10/26/10, Donald Gallimore <dongallimore@xxxxxxx> wrote: > From: Donald Gallimore <dongallimore@xxxxxxx> > Subject: 440 Spark Plugs "Dead" > To: mml@xxxxxxxxxxxxxx, 1962to1965mopars@xxxxxxxxxx > Date: Tuesday, October 26, 2010, 10:31 AM > What spark plugs should I use in my > 440? It's a 9.5 -1 motor with about 475 HP > at the flywheel. I said use AC 44s. > > > Been using Autolite 2976 plugs for years but last night > when I went to unload it > from the trailer to put it into the shop bay for a tranny > adjustment, it would > not start. Had spark everywhere and had gas. Wouldn't > even fire with starting > fluid. Only got a few hits. Last time I drove it was onto > the trailer after nine > runs down the strip in the 12.19/12.25 et range. The > plugs only have the nine > runs on them. > > The guys at the shop says very likely the plugs are dead. > Never heard of that > one but I learn something new ever day. > > Akron Don Gallimore >