GM/Chevy LS heads and standard cast cylinder heads from time to time need a little attention on the valves. If you’re looking to learn how to get better compression and reduce blow by through your valves and you’re also on a budget this is the video for you! No this will not game you a compression point but it will help you get the heads performing like stock again. If you’re looking for performance and it’s your main goal then going to a machine shop and running stainless valves and a 5 angle valve job are probably more realistic but for the stock and mild do it yourself guys this is perfect. Take tour time, don’t rush, pay attention and you will do fine.