Engine break in without a tachometer

Full throttle valve float is at around 6000 depending on how the engine was built. Around half throttle is 3000. Not rocket science unless you make it that way. Ever heard of a cam fail because it was broke in at 2750 and not 3000? Ya, me either. Joe doesn't tune his own guitar anyway. He hires it done. And when you play the Blues it is not tuned to perfect pitch!


They are tuned, and if they aren't...those chords sound fkd up. You cant bend your way through a real song, unless you're noodling a string or 2.
1900 to 2200
Then it was 3000
Then i heard from people 3000 was too high and 2000-2600 was where it was at.

It's all gusty with opinions.

I've broke them in every way mentioned.
Splitting hairs.