ZR-1 Net Registry Forums - View Single Post

QB93Z · 08-31-2007

When I was talking with Marc Haibeck last weekend at Carlisle, he pointed out that the ZR-1 is essentially an engine with two different cams. In normal power, there is a civilized, smooth performing, "low-end" cam. When the secondaries kick in, the engine characteristics are dominated by a hotter cam. He said that it is one of the ways the designers got such a broad useful power band out of the LT5.

This might explain why there is not much improvement seen by swapping out cams.

Jim

08-31-2007	#8
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,684	Re: Thoughts on compression/build When I was talking with Marc Haibeck last weekend at Carlisle, he pointed out that the ZR-1 is essentially an engine with two different cams. In normal power, there is a civilized, smooth performing, "low-end" cam. When the secondaries kick in, the engine characteristics are dominated by a hotter cam. He said that it is one of the ways the designers got such a broad useful power band out of the LT5. This might explain why there is not much improvement seen by swapping out cams. Jim