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Old 12-21-2001, 12:23 PM
webebob webebob is offline
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Join Date: Feb 2001
Location: Southern, IN
Cobra Make, Engine: SPF
Posts: 118
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The performer RPM bolts up to the Ford Racing aluminum CJ heads, but the mismatch in the ports is shocking. The runners in the intake are at least 25% smaller than the ports on the head.

With that said, it is the standard manifold shipped with the 486hp/460 and works wonderfully at that power range. The engine pulls so hard from 5k to 7k, a rev liliter is manditory. 1st gear unwinds from a dead stop in 1 second.

Any ideas on why/how a terribly missmatched runner intake can run so good?

Bob
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