Holley 4.3 Manifolds

[rr]

One thing to remember about efi, is that there is no such thing as
too much cfm. With no signal to boosters required, heck you
could use a flush tank for a throttle body & plenum. Or even
a bell housing as someone was recently trying.

BobR.

Rich Vandervoort wrote:

> 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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