Quote:
Originally Posted by kdanner
I can only guess, but my best guess when I initially read this was that someone had entered as a 2014 but actually used heads with at least one of the differences in the 13 head which are:
1. CNC ports/chamber
2. Larger exhaust valve
Am I getting warm?
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I believe the new approved cylinder heads are the 5.2 Coyote, GT350 cylinder heads. They are CNC ported and also have a larger valve.
They also have larger port runners.