I'm getting a set of 781 heads put together with new 2.19/1.88 valves. My head guy is telling me that the installed height with the stock length valve that I bought a few months ago is 1.750. Says he has never seen a BBC head with this low an installed height, and that I need at a bare minimum of 1.850+ installed height with the cam that I have. Cam is a Comp 11-324-4 with .568 exh with .578 Int.
I'm being told that 1.900 installed height is pretty standard on a stock BBC head. Is there something different with 781's or maybe this set of heads that I have?
Does this all sound right or does something sound out of whack?