Review on 🔪 Enhance Precision with COMP Cams 4726 .530 Valve Guide Cutter by Simo Ramsey

These were used to cut valve guides on Vortec heads to get more valve seal clearance for a larger cam. It took a while to cut them all out, but it's better than taking the heads to the machine shop. Be sure to use a slow drill setting, as spinning too fast will heat the material up too much. I used a paint marker to cut all the guides at roughly the same height and a shop vacuum to vacuum up the shavings every few minutes.