DeTomaso Mailing List: April 2000, Message #278

Dave, are you using it on your turbocharged engine(s)??????


----- Original Message -----
From: David Doddek <pantera@pobox.com>
To: Multiple recipients of list <detomaso@realbig.com>
Sent: Monday, April 10, 2000 6:10 AM
Subject: Re: Fwd: Help cleveland manifold question


> If you actually buy an Eddlebrock Performer intake new for the Cleveland.
> you get a piece of paper with it describing the reason for for the small
> ports, and yess, it is to increase port velocety.
>
> Dave "bought mine new" D
>
> At 11:57 PM 4/9/00 -0500, you wrote:
> >John wrote:
> >
> >>[snip}  Just pulled the edelbrock "F351-4V" manifold off to polish
> >it.  But the port size difference between the two jumped out and bit me.
> Got
> >out the vernier caliper and measured the two.  The heads are big 2.5" x
> 1.75"
> > and the manifold measured in at 2.15" x 1.38"
> >
> >>>>I believe one of the Dan Joneseses determined that Edelbrock purposely
> >made the intake runners undersized because they felt the 351C-4V ports
were
> >just TOO big for efficient combustion.  Reducing the side of the port
(while
> >keeping the volume of air/fuel flow the same) results in increased
velocity,
> >and presumably more power.  The mismatch when the air is flowing from a
> small
> >to a big opening is a relatively trivial problem; it's when you are
trying
> to
> >force air from a big hole into a small one that you run into
difficulties.
> >
> >I believe...:>)
> >
> >I think you're okay.
> >
> >Mike
> >
> >
> >
>