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GMC V6 and V12 Engines Engine repair and rebuilding

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  #11  
Old April 14th, 2017, 04:09 AM
bigblockv6 bigblockv6 is online now
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Default Re: V-12 with blowers

Quote:
Originally Posted by ilvracn View Post
i was wondering if 2 650 cfm carbs would be too much. with the lower rpm band of this engine. i was planning on turning 4000 to 5000 rpm max, depending on how much i can lighten up the rotating assembly.
I would run 2 Demon 500cfm carbs like Thunder V12 does, you may also want to contact them on how they do their build up on these engines
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  #12  
Old April 16th, 2017, 07:01 PM
atomman atomman is offline
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Default Re: V-12 with blowers

Demon carbs are no longer available.
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  #13  
Old April 17th, 2017, 04:58 PM
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ilvracn ilvracn is offline
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Default Re: V-12 with blowers

Never liked demon carbs much anyway. I've had great luck with quickfuel and holley
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  #14  
Old April 18th, 2017, 05:22 PM
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Default Re: V-12 with blowers

I musta gotten the last 625 cfm road demon for my 292 as shortly after I am seeing they are gone. Plenty of demon carbs available though from Summit Racing. Best luck I have had has been with edelbrock thus far.
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