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Casey Miles · 12-06-2011, 04:53 PM

I was at CP pistons booth at the PRI show, they had a piston already certified by NHRA for the 396/375 HP Chevy motor to fit directly with the aluminium head which is an aftermarket part already. The piston fits the chamber better and picks up a point in compression over a steel headed engine piston. My question is when are the original "stock" parts going to be allowed to be used again? I don't have a problem with the manufacturer, it's with NHRA already allowing parts that are aftermarket already be enhanced by allowing other aftermarket parts. In other words, if you had a 396/375 with the aluminium heads, you shouldn't be allowed a different piston other the the standard spec piston for that engine with a steel head.

Casey Miles
248H Stock?

12-06-2011, 04:53 PM	#1
Casey Miles Senior Member Join Date: Jun 2006 Posts: 706 Likes: 128 Liked 508 Times in 92 Posts	Making parts fit aftermaket parts I was at CP pistons booth at the PRI show, they had a piston already certified by NHRA for the 396/375 HP Chevy motor to fit directly with the aluminium head which is an aftermarket part already. The piston fits the chamber better and picks up a point in compression over a steel headed engine piston. My question is when are the original "stock" parts going to be allowed to be used again? I don't have a problem with the manufacturer, it's with NHRA already allowing parts that are aftermarket already be enhanced by allowing other aftermarket parts. In other words, if you had a 396/375 with the aluminium heads, you shouldn't be allowed a different piston other the the standard spec piston for that engine with a steel head. Casey Miles 248H Stock?