So I’ve double checked my deck height with a clear head and the measured height is .031 below the deck. This is with the kB 162 and their 1.908 listed CH. My head gasket is .039 fel pro with a 4.490 bore. My biggest problem is with the heads I am stuck with. They are 452 with a 92cc chamber. The best piston I can find is the speed pro forged L2315F with a 1.920 CH. that should make my deck height a .019 now. My phone is almost dead so I can’t run these through the website calculators right now. I may calculate by hand later tonight. the 70 service manual list two different CR of 8.7 and 9.5. I bet they don’t make the 9.5 piston anymore.