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SSDA Hemi · 11-22-2012, 06:33 PM

Part of the problem is the intake face on a Hemi is not at a 90 degree angle to the valve cover surface so the threads of the valve cover bolt breaks through at the bottom of the threads before you are close at the valve cover .

A simple wording of "valve cover bolt hole at the valve cover rail" would in fact keep a majority of the heads legal, BUT- why should some heads be exempt and some be outlawed?

All the heads have gone through tech. Legal yesterday but not today. The heads that are milled into the bolt at the rail need a spacer greater than what is milled to be legal and port volumes adjusted to correct cc's. No new Heads
can be built this way. Old heads grandfathered in.

Like Eric Jones stated " a few thousandths one way or the other isn't going to kill the head"

11-22-2012, 06:33 PM	#7
SSDA Hemi Senior Member Join Date: Nov 2005 Location: NJ Posts: 503 Likes: 130 Liked 451 Times in 77 Posts	Re: superstock hemi heads Part of the problem is the intake face on a Hemi is not at a 90 degree angle to the valve cover surface so the threads of the valve cover bolt breaks through at the bottom of the threads before you are close at the valve cover . A simple wording of "valve cover bolt hole at the valve cover rail" would in fact keep a majority of the heads legal, BUT- why should some heads be exempt and some be outlawed? All the heads have gone through tech. Legal yesterday but not today. The heads that are milled into the bolt at the rail need a spacer greater than what is milled to be legal and port volumes adjusted to correct cc's. No new Heads can be built this way. Old heads grandfathered in. Like Eric Jones stated " a few thousandths one way or the other isn't going to kill the head"