Intro to a port job

MOPAROFFICIAL said
I cut the 45, top cut 30 for the 'valve' seat size, narrow the seat with the 60. Theres more than one way to skin a cat though.

a lot of places just touch the 45 on heads that aren't in too bad shape... or dealership work.

On a small block, I use a 15 degree top cut for size, the rest is the same.