IHRA Crate Motor Stock

fastmachone · 07-17-2011, 09:12 PM

What is the camshaft rule for IHRA Crate motor Stock?

Kegracing · 07-17-2011, 09:23 PM

About the same as all stock... you can change duration, but not exceed the spec on lift. Valve spring rules are about the same as all other also, cant change size from stock, but can increase pressure.
IHRA let's you run roller rocker arms on all motors, traditional and crate.
Hope this helps.
Ken

fastmachone · 07-17-2011, 09:30 PM

Thanks Ken, that helps out a lot.

07-17-2011, 09:12 PM	#1
fastmachone Junior Member Join Date: Jun 2008 Location: Indian Head, MD Posts: 27 Likes: 0 Liked 0 Times in 0 Posts	IHRA Crate Motor Stock What is the camshaft rule for IHRA Crate motor Stock?

07-17-2011, 09:23 PM	#2
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Re: IHRA Crate Motor Stock About the same as all stock... you can change duration, but not exceed the spec on lift. Valve spring rules are about the same as all other also, cant change size from stock, but can increase pressure. IHRA let's you run roller rocker arms on all motors, traditional and crate. Hope this helps. Ken

07-17-2011, 09:30 PM	#3
fastmachone Junior Member Join Date: Jun 2008 Location: Indian Head, MD Posts: 27 Likes: 0 Liked 0 Times in 0 Posts	Re: IHRA Crate Motor Stock Thanks Ken, that helps out a lot.