Going to get a valve job and put the cc503 in the LT1. (keeping stock size valves)As for now it's going to be a cam only car. Mabey latter on have the heads ported a little. Just want to know what a desent brand of valves out for the LT1.

 

Not sure if you posted on cz28 too or not, but someone there just asked the same question. If you're just getting a valve job, then you can go up to 2.0/1.56 valves without machining the head at all. It won't gain you much if anything right now, but you will be ready when you port your heads in the future. If you stay with stock valves or stock sized valves, then you will need a new valve job if you want to change to larger valves while you're porting your heads.

As far as brands, Manley and Ferreas are the most popular.