Yes, I'm thinking that the valve seats are recessed, even though the wear is on both rockers in most cylinders. Hardened seats only for exhaust right? Yeah I'm not positive on the install height number, dosnt that measurement apply to the spring only, not including retainer or shim? I can check them. I'm agreeing with you guys that the heads are probably wore out. With no port work, but replace valves, guides and exhaust seats, valve job, is it better to buy reconditioned iron heads condsidering they flow better?
