Was Re: Fw: 440 head question...now blocking X-over ports.

["65" <65val@xxxxxxxxx>]

Larger valves and porting and polishing have nothing to do with blocking the 
exhaust X-over. All it does is block hot exhaust from warming the base of 
the carb. The warming is useful during cold weather to aid cold engine 
drive-away. It also allows a few extra ponies as the  intake fuel/air 
mixture is colder when it reaches the combustion chamber.


Darwin/Victoria,BC Canada
'65 Cdn. Valiant Custom 100'vert...**SOLD**
'67 Dart GT 'vert - 273/904
http://s41.photobucket.com/albums/e285/65val/


----- Original Message ----- 
From: "William Harrison" <bbjt3@xxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxxxxxxxx>
Sent: Thursday, June 16, 2011 1:33 PM
Subject: Re: Fw: 440 head question


The passage that is blocked off is at an exhaust valve. What it does is warm 
the intake quickly to help idle. Blocking it off does not harm the engine in 
any way. You will just have to keep goosing it until it warms enough to 
idle. Again.....Unless you are installing larger valves and porting and 
polishing there is really no reason to block them off.
Later
Bill

--- On Thu, 6/16/11, MO <micher@xxxxxxxxxxxxxxx> wrote:

> From: MO <micher@xxxxxxxxxxxxxxx>
> Subject: Re: Fw: 440 head question
> To: "The 1962 to 1965 Mopar Mail List Clubhouse" 
> <1962to1965mopars@xxxxxxxxxxxxxxxx>
> Date: Thursday, June 16, 2011, 4:25 PM
>  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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> > - Show quoted text -
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