I just looked up the reference in TBON, and the deal is that the lettered
aluminum manifolds made by Shelby were originally produced with Shelby part
numbers, and later it was produced in an unlettered version by (or for) Ford
with the C90Z part number.
The version of that manifold that I had (lettered SHELBY) was very similar in
geometry to the F4B - I find it hard to believe there would have been a drastic
performance difference between it and the F4B. The earlier 'low-rise'
four-barrel Tiger manifold that is pictured in TBON is quite different, but I
have no idea what was actually compared to what, almost forty years ago.
Theo
Kathy and Erich Coiner wrote:
> Thanks for the info.
> Can you double check the Ford P/N for that Hi Rise manfold?
> A C9OZ part was engineered in 1969, well after the Tiger production run.
>
> Erich
>
> ----- Original Message -----
> From: "Bob Palmer" <rpalmer@ucsd.edu>
> To: "Kathy and Erich Coiner" <kathy.coiner@gte.net>; "Tiger List"
> <tigers@autox.team.net>
> Sent: Saturday, February 22, 2003 9:27 PM
> Subject: RE: Edelbrock F4B
>
> > Erich,
> >
> > TBON says on page 56, referring to the switch from the original Ford
> > C90Z-9424-D HiRise manifold "The results were so favorable that the
> > Edelbrock F4B instantly became the official LAT-1 manifold, with the
> > provision that the hole for the temperature sending unit be drilled and
> > tapped for the Smith sender used on the Tiger. The Tiger versions of the
> > Cobra/Benevides manifold, with their Shelby American part numbers, were
> > history before 100 had been cast." On page 57 is a picture of the
> Edelbrock
> > LAT-1 manifold. Although the resolution is poor, I don't see any hump or
> > hole on the driver's side rear runner. There does appear to be a tapped
> hole
> > on the passenger's side rear runner for the vacuum hose to the power brake
> > servo. It would seem that the only way to distinguish a Tiger OEM manifold
> > is by the threads for the temperature sending unit.
> >
> >
> > Bob Palmer
> > rpalmer@ucsd.edu
> > rpalmerbob@adelphia.net
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