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06-18-2012, 06:12 AM
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Junior Member
Join Date: May 2012
Posts: 11
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GM Performance 25534446 Vortec Large Port
Which head porter has a lot of R&D with these castings?max effort porting but no welding is allowed,need to make 2.3hp per cube .single cast manifold, compression unlimited,flat tappet cam. 320cid
Last edited by clevo; 06-18-2012 at 10:28 AM. Reason: edit |
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