Mike, are you sure the heat insulation is in good shape under the intake manifold? Most of these have been ruined by fluid leaks and/or rodents over the years. Dick Benjamin ----- Original Message ----- From: Mike Pittinaro <mechimike@xxxxxxxxx> > > WOT. Also, the poor idle > > occurs even when cold (actually, its even worst > > then). If you agree, then > > Funny, my '67 idles fine when cold but barely idles > when hot. My working theory is the carb is getting > hot, and the gasoline is evaporating out of the float > bowls.