Iron 273 4 barrel manifolds

PRH said

I’m pretty sure the Ede intake on a SB Mopar in NHRA stock is no longer allowed.

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No, still allowed along with 302 and 308 casting heads. Bill Schmacker of NW stock eliminator fame argued the case to NHRA and got the rule change. His daughter runs a 65 Valiant in stock and shes pretty competitive.