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Uncrated · 10-01-2007, 10:56 AM

the valve size must remain factory produced size. In the case of the 441 heads that means 1.94 intake X 1.50 exhaust

10-01-2007, 10:56 AM	#2
Uncrated Banned Join Date: May 2006 Posts: 170 Likes: 0 Liked 0 Times in 0 Posts	Re: stock 441 heads the valve size must remain factory produced size. In the case of the 441 heads that means 1.94 intake X 1.50 exhaust