07-07-2015, 10:36 PM
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CC Member
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Join Date: Oct 2003
Location: Spokane,
WA
Cobra Make, Engine: Shell Valley, 351W
Posts: 183
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Not Ranked
I have the Performer RPM heads on a 351w and I use the 4418. I also have a set of the 4417 which is cooler, but I'm happy with the 4418's.
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