Valve lap on boosted high mileage 5.3?

[GARY C]

I just did a leak down on all 8 cylinders. They all average around 20%. According to the gauge their all good until 40% loss. Humm

Did you test at full operating temp?

[JDR Performance]

The LS engine platform is definately impressive. Like everything else, it does eventually wear out and need to be freshened up. Sometimes it seems like there is an informal contest in the internet backyard LS builder crowd to see who can be the biggest cheapskate and build the worst pile of worn out parts that will run. Do the job right and take some pride in your workmanship.Do a valve job and get the heads resurfaced.

Exactly! Doing it right the first time is always cheaper in the long run.

[cv67]

valve jobs/guides arent much at all. Know the YT trend is to slap junk together they never last very long..youll make more power like this anyways