05-18-2009, 12:41 AM

Pontiacman469 Pontiacman469 is offline

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Join Date: Oct 2008

Location: Maine

Posts: 36

4x...6x???

Bottom line i have a chance to get a set of 4x heads for next to nothing.Would you?From what i understand all d-ports are equal in the 70s (Come from the same casting?)Question 1:How much difference is there between the 6x & 4x?2:How streetable is the 4x?(2.11-1.66?)3:How are the cc's on 4x's? Thanks -Andrew

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