How to tell if heads have been shaved

[Will'sFiero]

How do I tell if a set of iron heads has been shaved?

On SBC's, the thickness of the bosses for the lower head bolts can be measured and compared to stock. Is there a similar tell-tale on the V6 iron heads? What should the measurement be?

[billy wood]

I would CC them with a piece of thick plastic window material with a tiny hole in it & a syringe. Just use a bit of vasoline on the valve edges & the plastic plate. I use the 90% rubbing alcohol in the syringe.

[moonwell]

Most shops should stamp them somewhere on the surface with the amount they have been shaved.

[Superdave]

Most shops should stamp them somewhere on the surface with the amount they have been shaved.

x2

[StudlyCamaro]

however if the heads were part of a large batch that was intended for a racing team its possible that they might not have bothered stamping them

just a thought

[jp_grasshopper_007]

why do you want to know if they've been shaved?
are they warped from getting hot and you think they're already to thin?