Re: Fw: 440 head question

[MO <micher@xxxxxxxxxxxxxxx>]

 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
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