Now that is another point to consider. I was thinking to eliminate as much heat as possible to keep vapor lock away. I do think that a gas/air mixture at high velocity does get pretty cold....hmmmmm.........MO. On Jun 16, 6:51 pm, rll <rlipins...@xxxxxxx> wrote: > I played with blocking the heat crossover passage when i had installed an > aluminum manifold on my 440. I made shims I could slide in manufactured > from the steel bottoms of oil cans....shows how long ago that was.... > > It was summer in Phoenix AZ and I figured the aluminum manifold would warm > up fast enough to make any cold bog a minor problem. Long story short, > the cold > bog was terrible and it seemed like the vaporization of fuel kept the > manifold too > cool even after a 10 mile run to work. I jetted up about 4 numbers but > still was > not happy with it. > > Your results may vary > > rob/ferts/phx > > On 6/16/11 4:19 PM, Mike & Deb wrote: > > > > > Steve, > > I believe the cavity you refer to is designed to isolate the exhaust > > heat from "coking" the oil on the top of the head. I have never seen > > any type of cover for them-make some! Maybe stainless? > > Mike LeFevre > > > On 6/16/2011 4:25 PM, MO wrote: > >> Thanks folks for the replys, but I am still a little befuddled, I > >> know the port that goes accross the intake, under the carb can be > >> blocked off with an intake gasket, What I am concered with is the big > >> semi-circle holes arounf that port. in the head. looks like he** and a > >> trap for dirt and small parts. Are those also covered by the > >> aftermarket intake gasket?? > > >> To Chick: are you saying that instead of the stock type valley cover/ > >> intakje gasket combo, that there is available a seperate valley cover > >> and seperate intake gaskets? . Thanks...........MO > > >> On Jun 16, 11:53 am, "Stephen Andrachek"<s.andrac...@xxxxxxxxxxx> > >> wrote: > >>> My friend MO, > > >>> You are exactly right. You can block off the heat passage from > >>> the heads > >>> to the intake by using the correct valley cover. You can get the > >>> valley > >>> cover > >>> from Hughes Engineering (Google them up) and very good intake > >>> gaskets off > >>> of them too with a bead of silicon built in around each port. > > >>> To take things a little farther, if you put an Edelbrock Air Gap > >>> intake on > >>> your car with a low-restriction air cleaner you will pick up a > >>> noticable > >>> amount of torque and HP. But your engine is going to be a little > >>> cold-blooded and will need a little warm up time that with the heat > >>> passages blocked off. > > >>> Mancini's is also a great place to do business with. Both > >>> companies are > >>> all > >>> Mopar, all the time and will answer questions over the phone for you, > >>> unlike > >>> Indy Cylinder Head which does not want to talk to their customers > >>> at all. > >>> They consider that annoying and will refuse to answer your questions. > > >>> Hope this helps you in some way. > > >>> Stephen "Chick" Andrachek > > >>>> ----- Original Message ----- > >>>> From: "MO"<mic...@xxxxxxxxxxxxxxx> > >>>> To: "The 1962 to 1965 Mopar Mail List Clubhouse" > >>>> <1962to1965mopars@xxxxxxxxxxxxxxxx> > >>>> Sent: Thursday, June 16, 2011 2:21 AM > >>>> Subject: 440 head question > >>>>> 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.-Hide > >>>>> quoted text - > >>> - Show quoted text -- Hide quoted text - > > - Show quoted text - -- 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.