Tim can you tell me more about the cam in that Isky kit? Would you happen to know the specs? The Crane rockers I have run about the same ratio. I'm embarrased to say I ran these for years not knowing they were in the 1.52+ zone compared to the oem 1.76. With this now in mind was wondering what Isky did to compensate for the rocker ratio difference? Thanks for your input on this......G.