rainman69

:smash:

BeaterShark

Is that the stock zz4 cam? I can't believe that it has 309/316 advertised duration. And look at that valve overlap 88.4 degrees. That is a ton. For comparison, the ever so popular Comp Cams XE268 only has 54 degrees of overlap. I didn't mention the advertised durations as those number cannot be compared across venders.

Finally, I believe that for street roller cams (hydrolic or solid), the desktop dyno manual says to use the "Solid Flatt - Tappet Lifters" option, as the roller option assumes highly aggressive ramps used mainly in racing cams.

rainman69

That info came out of another post by the guy I did this for. The guy that gave it to me got it from a catalog...and the .050 of 208/221 doesn't work right in the software for some reason.
http://forums.corvetteforum.com/zerothread?id=189236