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PKRWUD · 04-02-2002, 04:41 AM

The '87-'88 Mustang 5.0 cam was part #E5ZE-AA, and the '89-'90 Mustang 5.0 cam was part #E8ZE-CA. They were very similar, but the E8 cam had 10 more degrees of duration for the intake valves (276 vs. 266). Obviously, that meant that the intake opening and closing points were different, as was the overlap. The lobe lift for both cams was the same for intake and exhaust (.278"). The less-aggressive "soft" lobe profile on the E8 cam, which was done to reduce valvetrain noise, reduced horsepower by about 3 hp.

Take care,
-Chris

04-02-2002, 04:41 AM	#3
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	The '87-'88 Mustang 5.0 cam was part #E5ZE-AA, and the '89-'90 Mustang 5.0 cam was part #E8ZE-CA. They were very similar, but the E8 cam had 10 more degrees of duration for the intake valves (276 vs. 266). Obviously, that meant that the intake opening and closing points were different, as was the overlap. The lobe lift for both cams was the same for intake and exhaust (.278"). The less-aggressive "soft" lobe profile on the E8 cam, which was done to reduce valvetrain noise, reduced horsepower by about 3 hp. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!