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oldskool · 01-12-2015, 06:07 PM

Hey guys, when did NHRA start allowing aftermarket blocks, forged rods and pistons, and even alum heads to replace some of the rare, expensive iron heads ?

01-12-2015, 06:07 PM	#9
oldskool VIP Member Join Date: Dec 2014 Location: The Land of Bayous, Boudin & Crawfish Posts: 1,668 Likes: 223 Liked 747 Times in 362 Posts	Re: Items allowed by NHRA over the years Hey guys, when did NHRA start allowing aftermarket blocks, forged rods and pistons, and even alum heads to replace some of the rare, expensive iron heads ?