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copbait73 copbait73 is offline
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Originally Posted by jeff91C2T View Post
I'm trying to find out what type of cam's are in the 3.6 liter 964 Turbo motor. I've been able to confirm they are in different then the 3.3 liter motor (at least by part number).

I've been reviewing specs given in Bruce Anderson's Porsche 911 Performance Handbook.
All 30.and 3.3L turbos run the same very mild duration cam. Anderson gives the duration but not the lift.
The '91-92 3.3L put in the 964 was almost the same. Very mild with just a a little more duration on the intake. Essentially, still a 1975 spec cam.
The 94 3.6L based (still CIS) Turbo had a cam which is almost exact to the 3.2L Carrera.
Finally, the 95 (993 series TT), presumably unburdened by CIS, has a serious cam profile with good intake and exhaust duration.
Anderson's chart is incomplete regarding GT2 and GT2 EVO port, valve size and cam spec. These would be very interesting to add to this comparison.

Last edited by copbait73; 02-16-2008 at 02:54 PM..
Old 02-16-2008, 02:51 PM
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