How far can you deck the heads on the cast iron v10 motors to raise compression? I'd like to get the motor up at least half a point to the 8.9-1 to 9.2-1 range. I see the pistons are dished but not notched for valve reliefs. I also want to run a higher lift ( crower cam #35418 ) and duration cam. I'm swapping a magnum v10 into my 96 ram sport 1500 and would like to warm up a stock motor and just get the swap done. I will put together a serious motor later on as i have plenty of spare parts to work with. I know that the intake has to be machined to a certain ratio when you shave the heads so it seals properly and I will also probably have to shim the rockers for the same reason. I just don't know the ratios or how safe i can cut the heads.