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Kirkman Racing · 12-10-2009, 01:59 PM

I am in the process of planning to build a 1971 454/425 for Super Stock. It's going to go into a 1971 Chevelle for SS/EA. I see that NHRA accepts the 026, 723, 990, and 188 for cast iron heads. My question is which for these heads work the best or are better for this combo? Thanks James

12-10-2009, 01:59 PM	#1
Kirkman Racing Junior Member Join Date: Dec 2008 Posts: 3 Likes: 1 Liked 0 Times in 0 Posts	BBC Heads? I am in the process of planning to build a 1971 454/425 for Super Stock. It's going to go into a 1971 Chevelle for SS/EA. I see that NHRA accepts the 026, 723, 990, and 188 for cast iron heads. My question is which for these heads work the best or are better for this combo? Thanks James