SU Carbs

they look like HIF6 SU's.
do a search for a company called SU MIDEL.

all the classic guys use them.

oh if you dont want to use them i'll happily swap you them for some strommies i have! also have a standard manifold.

cheers phil

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Originally Posted by byron

The main problem with the GM Rochester, both 2 and ESPECIALLY 4 bbl, was that the large "free" surface area inside their bowls made them prone to flooding when traversing the steep slopes a RR handles otherwise with aplomb.......or with almost anything else you'd put in the car!;)

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You must be thinking of some other Rochester carburettor. The Quadrajet has a relatively small centrally located bowl which has given few problems with regard to angles of inclination and has been used very successfully in off-road racing. In cases of very severe angularity there are a couple of simple modifications which can be made. (1) fit the plastic float bowl insert, a standard Rochester part, and (2) according to application, either extend the vents by a 1/2", or put a 45 degree angle on the rear vent.

The following publication is very comprehensive and has sections covering preparation for various motor sports.
Rochester Carburetors and Emission Controls, Roe, D. & Fisher, B. H.P. Books, ISBN No. 0-912656-10-7

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Originally Posted by Brian Hjelm

You must be thinking of some other Rochester carburettor. The Quadrajet has a relatively small centrally located bowl which has given few problems with regard to angles of inclination and has been used very successfully in off-road racing. In cases of very severe angularity there are a couple of simple modifications which can be made. (1) fit the plastic float bowl insert, a standard Rochester part, and (2) according to application, either extend the vents by a 1/2", or put a 45 degree angle on the rear vent.

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The bowl inserts were fitted as an anti-pollution measure, and, yes, they do help a lot on slopes!!!!;) ........BUT,.....

.........from memory the "big/new" 2bbls had internal [bowl to throat] vents and I really can't remember re. the late model 4 bbls........and both could spill over/splash over and cause over-richness/flooding:eek: :( :mad: