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TRBenj 
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21198 |
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 Topic: Holley carb opinionPosted: April-08-2020 at 12:42pm |
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I wouldn’t expect much if any difference. The 600cfm is plenty for a 351w and is what came on them. The 650 was used on the 330hp 454- suspect you could find a buyer for it if you wanted to sell. It should have the vacuum port (towards the front) as that’s where PCM plumbed the PCV.
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mmfarmer1
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Joined: August-02-2008 Location: United States Status: Offline Points: 187 |
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Posted: April-08-2020 at 12:37pm |
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I've got 2 spare Holley carbs that I'm about to rebuild. A 600 CFM and A 650 CFM. The 650 is in MUCH better condition than the 600. I'm currently running a Holley 4160 600 CFM on my 76 Ski Nautique with a 351W.. I've never run a 650 and was wondering how much of a difference, if any?? Thanks.
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