[DeTomaso] Techno question: 4/7 Swap Cams for 351Cs

[Charles Engles]

Dear Dave,

            Chevy firing order: 1-8-4-3-6-5-7-2
             351C firing order: 1-3-7-2-6-5-4-8

            Obviously, different firing orders and, therefore, unlikely that
a Chevy "4/7 Swap Cam" trick would work in the Cleveland.

                       Warmest regards, Chuck Engles


----- Original Message ----- 
From: "David in Durango" <adin at frontier.net>
To: "Charles Engles" <cengles at cox.net>
Sent: Saturday, July 01, 2006 6:08 PM
Subject: Re: [DeTomaso] Techno question: 4/7 Swap Cams for 351Cs


> Chuck,
> that's some chebbie hocus pocus.  Is the cleveland firing order the same
as
> the chev?  I heard 5hp or so.
>
> David
> ----- Original Message ----- 
> From: "Charles Engles" <cengles at cox.net>
> To: <detomaso at realbig.com>
> Sent: Saturday, July 01, 2006 3:14 PM
> Subject: [DeTomaso] Techno question: 4/7 Swap Cams for 351Cs
>
>
> > Dear Forum,
> >
> >        I just learned of something called a "4/7 Swap Cam".   It
requires
> swapping the no. 4 and no. 7 sparkplug wires.  It is appearently the trick
> cam for Chevy dirt track racers and allegedly decreases "bad" reasonances
> and torque and karma for the crankshaft.  The Isky and Crane websites
> mention an eight to twelve HP gain and smoother torque curve.   The Crane
> website alleges that the trick has been around for twenty years.
> >        Anyone familiar with the "4/7 Swap Cam"?     How is it supposed
to
> provide such benefits?     Does it work with the Ford Cleveland or is the
> Ford firing order different and therefore incompatible with the 4/7 Swap
> Cam?
> >
> >                 Curious, Chuck Engles
> >
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