Quote Originally Posted by 35chevy View Post
Can you help me understand the difference between the recommended 282 solid and the 282 roller? Duration is pretty close, the solid is 236/236 and the roller is 230/236. the intake valve closing point on the solid is 44 degrees and the roller is 41 degrees. wouldn't that make the roller have a higher dynamic compression since the intake valve closes earlier? What an I missing here?

Because of the lifter having a roller on the cam end vs. a flat surface, more aggresive rates can be used on the cam lift.... then there's the friction thing, a roller offers much less friction and wear on the cam lobe then does a flat tappet.... Richard can give you all the specifics on the difference in cam specs, I'm one of the "lightweights" on cam selection, and always defer to the experts at selection time!!!!!