[A26B]

Originally Posted by -=Jeff=-

Jerry do you suggest a sprung hub disc with your 22# flywheel?

It depends on the power level and what type of use the car will see, rather than the flywheel. A sprung hub will absorb engagement shock better than a solid hub thus provide more drivetrain protection than a solid hub WHERE HIGH LOADS OCCUR, i.e. with significantly higher power output than stock. If the car will see frequent strip use with drag radials or slicks, I would recommend the 900/300 series disc with sprung hub. We do not stock this disc, but it is readily available from RAM.

For street/strip use (street tires), I would recommend the 300 series disc, sprung hub or solid hub, with Marcel carrier. We stock the RAM 11" 300 series solid hub disc, with a Marcel carrier for use with the stock pressure plate. The 300 series disc uses organic facing for a smoother engagement.

Intended use and driving styles make clutch choice subjective. With so many combinations available, disc types, facing material, sprung or solid hub, flat vs Marcel carrier, it can be difficult to decide. What one driver thinks of as spirited can be seen as hard driving by another.

So, there is no pat answer for all drivers and applications. It may be worthwhile to choose a higher load capacity clutch than actually needed to better insure the outcome. Just remember that the closer you get to building a race car, the less comfortable driving on the street becomes. (Ask me how I know that. )

A good read, scroll down to the clutch discs.
https://www.ramclutches.com/images/catalogs/cb2010.pdf