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06-18-2012, 06:12 AM
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#1 |
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Junior Member
Join Date: May 2012
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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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06-18-2012, 11:53 AM
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#2 | |
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Veteran Member
Join Date: May 2006
Location: Murfreesboro TN
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Re: GM Performance 25534446 Vortec Large Port
Quote:
I'd call Slawko.
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Alan Roehrich 212A G/S |
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06-18-2012, 01:09 PM
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#3 |
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VIP Member
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Location: Glendale, Arizona
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Re: GM Performance 25534446 Vortec Large Port
As I understand, Glenn Knowlton in Minnesota did the cylinder heads for the SS/CS Firebird owned by Randy and Michael Mans.
I been told Glenn passed away earlier this year; however, there amy be someone still running his shop. |
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06-18-2012, 05:48 PM
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#4 |
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Senior Member
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Re: GM Performance 25534446 Vortec Large Port
Hettler has a program
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06-19-2012, 04:01 AM
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#5 | |
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Junior Member
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Re: GM Performance 25534446 Vortec Large Port
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06-19-2012, 07:46 AM
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#6 | |
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Veteran Member
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Re: GM Performance 25534446 Vortec Large Port
Quote:
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Ed Wright 4156 SS/JA |
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06-18-2012, 05:50 PM
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#7 | |
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Member
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Location: Bethel MN
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Re: GM Performance 25534446 Vortec Large Port
Quote:
763-784-0687 |
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