6066 (1960-1966) GMC Truck Club

6066 (1960-1966) GMC Truck Club (https://6066gmcclub.com/index.php)

- GMC V6 and V12 Engines (https://6066gmcclub.com/forumdisplay.php?f=9)

- - Holley 4412 (https://6066gmcclub.com/showthread.php?t=49614)

bobdylan

September 24th, 2016 01:36 AM

Holley 4412

looking for opinions on running Holley 500cfm 4412 carbs on V12

bigblockv6

September 24th, 2016 03:14 AM

Re: Holley 4412

That wouldn't be a bad idea! Thunder V12 builds there 702's with two "Demon" 500 cfm carbs, You may want to get a hold of them and see what they have to say:upyes:

FetchMeAPepsi

September 25th, 2016 02:39 AM

Re: Holley 4412

I agree. The Holley 500 should be great since the V12 is (from what I understand) just two 305s with a huge block. Air intake should be about the same. I bet it'd be a huge improvement in performance. Expensive though since they're about 250-300 bucks a piece.

bobdylan

September 25th, 2016 03:00 AM

Re: Holley 4412

I have been watching for good used, but are a popular dirt track carb, so are in demand.

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