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Registered User
Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,763
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As Iamchappy eludes to: early vs late 3.0 heads?
Early are the bigger 38, later were revised down with the new CIS setup increasing port velocity.
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Luke S.
72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 70 914 v8
http://www.hubgarage.com/mygarage/LukeSportsman
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