[DeTomaso] Carburator

[Richard Greenblum]

And, I believe all Holley spreadbores (4175s) are based on GM carbs, not
4300s, and won't fit the FoMoCo manifold.  I think you have to replace the
manifold or find an adapter.

Richard
Austin, TX 78759


-----Original Message-----
From: DeTomaso <detomaso-bounces at server.detomasolist.com> On Behalf Of
oldwheel at shaw.ca
Sent: Tuesday, August 25, 2020 5:54 PM
To: fred at creekspeak.com
Cc: detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] Carburator

Hi Fred,

The original 1970 Cleveland 4V cast iron intakes had four equal sized bores
(square bore) and many Holley carbs will fit on them. As far as I know, all
the stock 4V & Cobra-jet manifolds from 1971 on have a spread bore pattern (
two small primary bores and two huge secondaries) which is a unique bore
pattern to the Ford Motorcraft 4300 carbs and nothing else fits them at all.
GM made Rochester Quadrajet carbs which are a similar design, but don't fit
our Ford manifolds and any adapter plate top make them fit would be
ridiculously difficult and cumbersome.

 

Barry