yep built many of them with out knowing how much been cut off the heads or deck or what size valve s your running its hard to say what will clear so a smaller cam is always a safe bet with a roller cam you can put more lift on them .but if your looking at a flat lifter cam .i would not use one for mud drags or in the pit i built and help in many of engines like this a hyd cam is not my first pick. Rpms can go to the moon valve train needs to be top noch with a hyd cam you can be in valve float EZ