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FireSale · 03-13-2019, 10:05 PM

Please be careful here. Like Jim mentioned a lot of the aftermarket heads listed as "legal" by NHRA for Super Stock ship with valves larger than stock. I have a set of AFR 1399 heads on a shelf. They are listed as legal in the Classification Guide but ship with larger than stock intake valves. The work required to fix that is costly and destroys the advantage of head. They shouldn't be listed as legal. They aren't.

03-13-2019, 10:05 PM	#6
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 236 Times in 127 Posts	Re: 302 aluminum heads Please be careful here. Like Jim mentioned a lot of the aftermarket heads listed as "legal" by NHRA for Super Stock ship with valves larger than stock. I have a set of AFR 1399 heads on a shelf. They are listed as legal in the Classification Guide but ship with larger than stock intake valves. The work required to fix that is costly and destroys the advantage of head. They shouldn't be listed as legal. They aren't. __________________ Dale Shearon 68 Mustang 6394