Best updraft carb?

Blackstack 460 · Sep 9, 2015

I have a 301 bored .60 over with a cam and straight valve truck head in my 460. I run between 4000 and 5000 rpm and am in search of a bigger carb. It just cant hold the rpm very well under a load and loses it's momentum very fast. I'm pretty sure a NAR6B would be too big for me but what is my best bet?
Thanks.

Oconnor · Sep 10, 2015

Seen a big carb from a 427 continental
that may be better

460puller · Sep 10, 2015

I agree the 7700 combine carburetor works great but are hard to find and are expensive , but a reworked stock carb with larger throat and v
venturi would also be an alternative.

BushogPapa · Sep 11, 2015

"Best Updraft carb" I ever saw or worked on was on an Aircraft radial engine and had a venturi size of 100 Square Inches..

Sure made a lot of HP...!!

forty40 · Sep 14, 2015

100 sq in would be huge, an 11.28" diameter bore

Best updraft carb?

Blackstack 460

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Oconnor

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460puller

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BushogPapa

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forty40

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