[Stan Weiss]

Originally Posted by Jay S

If you have them talked into doing a 2500 stall that should take car of any lack of bottom end power the 2802 lacks.

In the mid 220s it has always seems like cam options are slightly limited for off the self stuff. The other cam similar to the 2802 is the crane 278/290 222/234 114lsa, .467/.469. Several members on here run it. It should have a little stronger bottom end power than the 2802, might even oust or come close to the 60916. Mainly because that crane is has less seat timing than the summit and is 5 degrees asymmetric, versus the summit and the crower are symmetric profiles.

The crower and summit cams the opening rates and closing rates are the same, versus the crane has 5 less degrees on the opening side versus the closing side. Plus the 278 rating is “suppose to be” at .004 tappet (I question some of their ratings since Harvey Crane left, some of their profiles look like .006 now). Not a big difference on the asymmetrics, but the 278 crane would have a little better vacuum and bottom end every bit as good of top end. I have done more engines with symmetrical cams, but the last several years we have been using asymmetric profiles and running bigger profiles on the higher compression stuff. Thought I would mention the 278 crane, for the lift, duration, wide lsa, and being asymmetric grind, it has a well designed cam. Bang for the buck, summit grind is great though. I would do the crane before the 60916 at 9.8.

Jay,
Are you going by listed spec or have you have you run them on a Cam DR?

When a cam is asymmetrical it can either have the opening shorter and longer closing or longer opening and shorter closing. From what I understand UltraDyne used to have a few extra degrees on the closing side.

Stan