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Old 01-07-2011, 10:31 PM   #1
jaydee
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Default Trying to understand the diff between 4V & 2V heads

Pardon my ignorance but I'm trying to get my head around 4V heads and 2V heads.
I know 4V means 4 venturi and 2v, 2 venturi carburettor.

I have an XC 351 that originally had a Carter Thermoquad which I replaced with a Holley.

I have been told I have 2V closed chamber heads, so how can that be if it had a Carter thermoquad (quad meaning 4)?

My next question is I've found some extractors at a good price described as F series (presuming for an F100 or similar). So if I have 2V heads will it be ok to have 4V extractors? I can understand that it wouldn't work the other way, that is 2V extractors on 4V heads.

So can someone please in simple english explain this mystery to me, cheers.

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