what valves are you using in a 750hp blower motor?

sodium filled ? typical stainless ?

Severe duty valves on the intake, extreme duty (Inconel) on the exhaust. Stay away from Narrow Seat width valve jobs.

Manley makes an exhaust valve made from inconel alloy that is generally recommended to any high performance marine application, NA or not. A set of 8 1.88" exhaust valves will set you back $350 - $400 depending on where you buy. I found a set of Ferrea's extreme duty superalloy (same thing as inconel) online for around $285. That is about the best I could find.

never skimp on valves, it will cost you if you do!!

done , ordered them !!!