Cam clearance

I was wandering if we will do a cam piston clearance Do bolts need to be tightened with a dynamometer wrench

Some may do so, but in practice you need to make sure they're tight, without needing to fully torque them* - oh, in english the word for the tightening tool is "torque wrench".

*With torque to yield, or stretch bolts, if you torqued them fully you'd need to buy a new set, which is expensive for no good reason.