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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
"Some people ( in france) said it must but timed at 1 to 1.2mm. Some others said it must be timed to 1.6 to 1.7mm"

The lower the number here the more you are retarding the cam timing, and the higher number is advancing cam timing.

Advancing the cam timing gives a little more lower to midrange power which comes on smoother which is better for city driving and retarding cam timing can move the power band as much as 5-700 rpms higher and make it come on with more punch... better on the open highway and track.

If you want to move the power band still higher than SC cams can do, sell the SC cams and install 964 cams. You could also have the SC cams welded up and reground to 964 profile but thats seems a waste if they are in great shape.

The 964 cams will loose some midrange power while making more on top from around 4300 to 7000rpm timed at 1.25mm, but you can't have it all without current day variable cam timing.
Old 02-07-2009, 10:55 AM
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