Valve job with head gasket replacement?

4spdcuda66 said

I had a conversation about a blown head gasket with a guy who owns an auto repair shop. He told me a valve job is in order EVERY time a head gasket is blown because the head of the valve gets hot, warps, and will not seal against its seat. I've replaced head gaskets on engines that have gotten HOT, and never had any problems after the work was performed. Furthermore, a blown head gasket does not always lead to overheating. I've never heard of this before. Any merit to this?

Click to expand...

I do not agree with his thinking. Every valve job sinks the valves, which looses power. There are a lot of parts that "mate" together. Guides, retainers, locks, springs, seals, and valves. Are you willing to replace them all? Lapping is an easy way to check seal. If it does not have a "good" valve job then it should be done, we are talking about a Performance engine. What bothers me is why did the head gasket blow? I always milled the heads flat and never had a head gasket problem after.