MustangWorks.com : Ford Forums - View Single Post

PKRWUD · 10-03-2002, 04:07 AM

generally, retarding it 4 degrees will move your power band up about 850 rpm, and advancing it will bring it down 850 rpm, +/- 150 rpm.

This is not always true, however, and unfortunately, like shoe sizes, every engine's ideal cam degreeing is different. To find the ultimate degrre setting for YOUR cam in YOUR engine, with the mods IT has, you need to install the cam and adjust a couple valves. Then run compression (two cylinders is best), and write it down. Next, move the cam a couple degrees, and do the compression test again. Keep doing this until you have covered at least 4 degrees each side of center, and compare the results. The cam position that yeilded the highest compression numbers is the position that will work the best for YOUR combination of parts.

Or go to a dyno, and do the same thing.

Take care,
~Chris

10-03-2002, 04:07 AM	#7
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	generally, retarding it 4 degrees will move your power band up about 850 rpm, and advancing it will bring it down 850 rpm, +/- 150 rpm. This is not always true, however, and unfortunately, like shoe sizes, every engine's ideal cam degreeing is different. To find the ultimate degrre setting for YOUR cam in YOUR engine, with the mods IT has, you need to install the cam and adjust a couple valves. Then run compression (two cylinders is best), and write it down. Next, move the cam a couple degrees, and do the compression test again. Keep doing this until you have covered at least 4 degrees each side of center, and compare the results. The cam position that yeilded the highest compression numbers is the position that will work the best for YOUR combination of parts. Or go to a dyno, and do the same thing. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE! Last edited by PKRWUD; 10-03-2002 at 04:34 AM..