12-19-2002, 07:09 AM
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Canadian Gashole
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Join Date: Mar 1999
Location: Quebec, Canada,
QC
Cobra Make, Engine: Johnex 427 S/C, 351W, 472 HP, 444 lbs. torque
Posts: 2,455
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Not Ranked
Cranky
You are right, these heads really flow. As I said they are not really ported, yet the engine was able to put up some pretty good numbers. One big drawback with these heads is the bolt pattern for the exhaust, not the same as any others. I didn't care since I had to have custom headers made anyway.
I got the heads, brand new, from a friend of mine who races DIRT modified. He uses the same engine builder that put my engine together. Chevy powered cars absolutely ruled this track for many years. Then the Ford powered car took the championship 2 of the past 3 years. You wanna hear the Chevy guys cry. I guess they think they must always win. 
By the way, Ford has now come out with N352 heads that have slightly smaller ports but reportedly flow just as well as the N351 heads. They are supposed to really work on smaller cube engines like the 302's. These new heads are in the latest Ford Motorsport catalog.
Wayne
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