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Chevy55 · 10-12-2015, 07:31 PM

SS/ Modified, C/M thru F/M, all heads must be NHRA accepted, 2 valves per cyl. OEM casting with OEM # cast in head.

NHRA rulebook, sec11F page 23.

10-12-2015, 07:31 PM	#7
Chevy55 Banned Join Date: Nov 2014 Posts: 324 Likes: 625 Liked 179 Times in 89 Posts	Re: SS Modified SS/ Modified, C/M thru F/M, all heads must be NHRA accepted, 2 valves per cyl. OEM casting with OEM # cast in head. NHRA rulebook, sec11F page 23.