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Old 02-10-2013, 07:28 PM
Chevy327slayer Chevy327slayer is offline
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1971 455 big block
I'm building a 1971 big block 455 buick and I have everything but the carb and was wondering how many cfm's they came with. I have a holley 4010 series that's 750 cfm but I didn't know if that was big enough. If its not is there a website that sells upgraded jets for more cfm's
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Old 02-10-2013, 08:12 PM
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Re: 1971 455 big block
750 is pleanty big enough, even for over stock cams
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Old 02-11-2013, 04:30 AM
DeltaP DeltaP is offline
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Re: 1971 455 big block
For sure.
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Old 02-11-2013, 08:08 AM
maxwedge maxwedge is offline
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Re: 1971 455 big block
The stock Quadrajet on the w-30's back then were 800 cfm, 750 will work up to some meaningful mods having been done.
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