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Karl Owens · 06-26-2014, 10:33 PM

I have a Pontiac 428 based combination, NHRA legal Edelbrock heads (castings) By NHRA rule book the heads aren't legal in SS/AM because they don't have an OE part number, but in SS they are allowed to replace an OE part number. I don't see anywhere in IHRAs rules where they address this. My combination would be an NHRA legal super stock combination ignoring the piston and head volume rules.

06-26-2014, 10:33 PM	#4
Karl Owens Junior Member Join Date: Dec 2009 Posts: 69 Likes: 0 Liked 1 Time in 1 Post	Re: IHRA SS Production?? I have a Pontiac 428 based combination, NHRA legal Edelbrock heads (castings) By NHRA rule book the heads aren't legal in SS/AM because they don't have an OE part number, but in SS they are allowed to replace an OE part number. I don't see anywhere in IHRAs rules where they address this. My combination would be an NHRA legal super stock combination ignoring the piston and head volume rules.