Originally Posted by prostcelica
I just picked up a used SBC 383 with performer RPM heads on it. I have pulled the heads to check piston to deck height so I can get the compression where it needs to be to run on 91. While the heads are off I'm going to dissaseble them and cleam them up a bit. My question is how to tell if the seats and valves are good to go. Is it just a visual inspection for errosion? Also how to check for bvalve guide ware? I have a dial indicator on a magnetic base. Not sure if I can get the job done with that. Anything else I should be looking for ?
See how thin the valve margins are. If they're thin from wear, it's a good bet the seats are also worn.
If the guides are worn, that can wear the seat, eventually it'll be worn too much and will need recut after replacing the guides. Guides have to be done if they're loose before the seats are cut.