Holley 4.3 Manifolds

[Bruce Plecan]

What you need is to think about sheet metal <g>
I'd think ala Ford Port would be neat, done right could have adjustable
runner and plenums with just spacers for opimizing things.
MY hospital will delay things, but I have the parts in route for a manifold
tuning idea that will make life easy for serious tuning, or just be another
laughable CSH idea that didn't work.
Bruce

> The pic pages for these intakes on Holley's site aren't up yet. Are any of
> the new intakes single plane design?  Trying to find something for my next
> V6 buildup.
> I have Vortec heads and i modified my stock Syclone intake to fit them.
> Works well, ran 11.01 @ 125 with this setup.  Engine is for sale btw, if
you
> know anyone in search of a stout built V6 capable of 550-600hp.
> Brian Green


> >Yesterday I noticed that Holley now offers a TBI intake manifold
> >for the GM
> >4.3 v6.  I called Holley tech to discuss the suitability of modifying
this
> >intake for use on the 4.3 "vortec" heads.  I was told not to do
> >this because
> >this manifold like all other Holley products is optimized for its
intended
> >usage.  The bottom line was this manifold was designed for the tbi heads
> >with their small restrictive ports.  Therefore this manifold shouldn't be
> >used with heads that flow significantly better than the tbi heads.  This
> >sounded like good advise to me.  After this discussion I noticed
> >another new
> >4.3 intake manifold.  The 4.3 MPFI manifold (dual plane) is optimised
like
> >all other Holley products with a 1000 cfm throttle body.  From my
> >unelightened knothole this seems a bit large.
> >
> >Rich V.


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