Not if you get the heat range and timing correct for that motor up work
I like and always use them on all my N/A motors up
you should always strive to get the spark as close to the center of the piston as possible work up

Last edited by Cab_Burge; 09/17/17 08:10 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)