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Dwight Southerland · 09-04-2007, 10:58 AM

From the rule book under section Engine:1, Cylinder Heads, "Valve-diameter tolerance: +.005" or -.015" from NHRA Specs." You do have a rule book, don't you?

09-04-2007, 10:58 AM	#3
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,996 Likes: 63 Liked 756 Times in 189 Posts	Re: Valve Diameter Tolerance From the rule book under section Engine:1, Cylinder Heads, "Valve-diameter tolerance: +.005" or -.015" from NHRA Specs." You do have a rule book, don't you?