Generation IV Internal Engine - questons about the magic stick 4

hey guys. in my 2001 z28 i plan to swap in a cam soon. im interested in something like a magic stick 4 or g5x3. but i heard on the street that if i run a magic stick 4 i will have to fly cut the pistons. is this true or not. i appeciate any help. thanks guys

Not true.

so not true, i had an ms4 with ls6 heads, milled .010 and stock head gaskets, it ran fine

i have a g5x3 cam ive been really happy with it so far. but ive seen some good numbers put down with the ms4

I have the MS4 and PRC LS6 heads and I have over 5000 street miles with no problems and i never flycut. Its aa good cam and makes good power too.

My ms4 helped my valves kiss all 8 of my pistons. I discovered it when upgrading heads. I had never mechanically overreved my engine either, just pinged off the rev limiter a few times. Heads were stock(had never been pulled off at that point), and the cam install was done by a reputable shop. The cam was bought as a kit with the prc springs good to .660 lift, titanium retainers, chromoly pushrods etc.

Other than the grooves in the pistons, I would have never known. The engine still ran strong. But just food for thought. I'm pretty sure on a 111lsa ptv clearance w/ the ms4 is only .030...