just changed my plugs after 15,000 miles (1st time after rebuild) with bocsh 4+4 plugs and MSD 8MM wires

did a compression check, below are the results

1 - 245psi 2 - 246psi
3 - 248psi 4 - 247psi
5 - 250psi 6 - 248psi
7 - 246psi 8 - 243psi


lowest: 243psi, highest: 250psi (7psi varience)

this is still good right?

(tested while on battery charger @ WOT, all plugs removed)

what is the normal for a stroked engine?

 

As long as all cylinders are basically the same ( I think +/- 5% is tolerable), so your motor is fine.