Thanks for all the info guys!

Frank, wow thanks! Where might the cam card be?

Richard, I mean that it has been diassembled. Everything but the cam and the crank removed. Then we measured the cylinders, crank (main and connecting rod), installed new connecting rod bearings, cleaned it all, painted it, lapped valves, assembled most of it, and now i'm trying to figure out how to set it all. With the measurements made, and the condition of everything, it appears to have been rebuilt about twenty thousand kilometers ago. It has a 6 thou bore, and ten under crank grind.

Chester, that could be a potential easy way to find TDC. What do you mean by "the opposite end of the firing order will be at top fireing point" ? So 1-5-3-6-2-4, when the exhaut valve opens on say piston #1, piston #(edit: I was going to say #3, however i'm wrong, and don't know what it might be)is TDC?

Thanks!
Colin

\'53 GMC