Chitown racer

They are sold in mixed sets like that, 8-1.6 rocker and 8-1.7's. The purpose isso someonerunning a single pattern cam to make it act like a dual pattern cam without having to change cams. Its alot less work to swap rockers than cams.

Joel5.0

That's an old-school "trick" that works most of the times......... Lift and Invigorate 1.6 vs 1.7

davnsam6

joel5.0 thats just what im trying thanks for the article!