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BlueOval Ralph · 07-24-2012, 05:04 PM

Taking a 4.125 and a .060 over bore per the rule give you a 4.185 bore with a bore spacing of 4.380 this only leaves less than .200 between bores not a lot material for head gasket seal.

07-24-2012, 05:04 PM	#8
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: 2013 Cobra Jet 427 Taking a 4.125 and a .060 over bore per the rule give you a 4.185 bore with a bore spacing of 4.380 this only leaves less than .200 between bores not a lot material for head gasket seal.