06-01-2007, 08:41 AM
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CC Member
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Join Date: May 2004
Location: Palm Coast,
FL
Cobra Make, Engine: Shelby American CSX 4241 - authentically built
Posts: 2,573
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Not Ranked
Okay, now I am more confused.... Low riser has bigger ports than Medium Riser? MR are listed as 1.40 x 2.10 and Low Riser are listed as 1.46 x 2.40.
My Blue Thunder MR intake has the smaller ports, but my 390 heads have the larger ports (mismatch is okay since it's smaller feeding to larger).
The gasket I had on there was FelPro 90145. They are the blue steel core Permatorques. I assume this is the same as the VR NitroSeals?
I will try the Nitroseals, but I obvously need the LR version for my big port heads.
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Sal Mennella
CSX 4241, KMP 357 - sold and missed, CSX 4819 - cancelled, FFR 5132 - sold
See my car at CSXinfo.net here >> CSX 4241
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