Using the valley cover with the block off will do what you want. Are the heads ported, polished, oversize valves? That would be the only reason to block off the hole. If memory serves me right the hole is supposed to warm the heads to help idle when the engine is cold. Someone will correct my assumption if Im wrong Later Bill Harrison 65 Coronet 2 dr post..... --- On Thu, 6/16/11, MO <micher@xxxxxxxxxxxxxxx> wrote: > From: MO <micher@xxxxxxxxxxxxxxx> > Subject: 440 head question > To: "The 1962 to 1965 Mopar Mail List Clubhouse" <1962to1965mopars@xxxxxxxxxxxxxxxx> > Date: Thursday, June 16, 2011, 2:21 AM > This is for a 1978 head.Intake side > -1/2 way between the intake > ports. where the heat crossover port is. What > does the semi-circle > pocket in the casting intended to do. And what can be done > to hide > it? I would be using valley cover with blocked off > heat port. Thanks > for any help......................MO > > -- > You received this message because you are subscribed to the > Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" > group. > To post to this group, send email to 1962to1965mopars@xxxxxxxxxxxxxxxxx > To unsubscribe from this group, send email to > 1962to1965mopars+unsubscribe@xxxxxxxxxxxxxxxxx > For more options, visit this group at http://groups.google.com/group/1962to1965mopars?hl=en. > > -- You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group. To post to this group, send email to 1962to1965mopars@xxxxxxxxxxxxxxxxx To unsubscribe from this group, send email to 1962to1965mopars+unsubscribe@xxxxxxxxxxxxxxxxx For more options, visit this group at http://groups.google.com/group/1962to1965mopars?hl=en.