Jacked-up 9375

[cat herder]

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[cat herder]

(p47 was a full-page advert)

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[cat herder]

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[cat herder]

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[jmarkaudio]

So likely modified for E85, for gas 2 circuit is my suggestion. New stake tubes as well. If you must keep it 3 circuit the new tubes have no pinch, you must put restrictors at the top outlet in the metering blocks.

[cat herder]

allcarbs.com has the pinched tubes sized at .031. Larger than I'd like to start with but it'll probably be fine.
https://allcarbs.com/product/holley-idle-pick-up-tube/

I have new HP boosters for it that will work with the stock stake tubes.

This is initially going on a maybe 300hp 350, and the one I used before on a only slightly hotter 383 was still 3 circuit, doesn't hurt anything to try it this way first and see what happens.

[cat herder]

BTW I have made idle tubes from scratch before for the 4010/4011. Carved up a set of dies that go in the mill vise, spin the tubing in the chuck etc. etc.

When I got the setup just right it would leave a pilot hole at about .015", easy to then drill to size.