[Jeff Lee]

I took the original statement of 720# and divided the stede 4 turns into 720# to arrive at 180# per turn. That's why I put a question mark at the end.
But I have to admit, 15# per turn is beyond my level of comprehension! Why would (or how could?) a pressure plate spring only achieve 15# per complete turn yet have 320# as a base? I think a double check is in order.
Andy, why would a Jerico require a clutch with less pressure than a G-Force? Just curious, always wanting to learn more. I would assume what you are saying is the G-Force can shift easier with a lot of pressure whereas the Jerico requires less pressure to shift easy? But regardless of shifting, wouldn't either transmission yield quicker ET's with a softer clutch setting, assuming it is not excessively soft?

The proceedure Andy mentions to find your "sweet spot" on the clutch is correct. Personally I don't have a data logger. I'm just now upgrading to an Autometer Ultimate II with driveshaft record capability. So far it's all been adjusting and looking at the time slip...which means I've burnt up more clutches that I'd like to admitt. A data logger will allow you to sneak up on the ideal setting.

As I said in my first response, there are a lot of variables. Andy confirmed it with "Ram uses less presssure than McLeod. (most times) Ram uses iron pressure ring, McLeod uses aluminum. Heat makes this clutch work,
so everything you do from the temp your clutch is before you start the engine to the way
you do a burnout affects the way the car works."