340 X Head Valve Options

SheSaid said
The PRW's came with hardened shafts. I read about the rocker tip problems, but decided to risk if for the price. I believe the diameter of the base of the beehive springs are smaller than the diameter of the base of the stock springs. So I will have to mill the seats, but I will have to mill the seats anyway to get my spring install height.

Still have not had a chance to start machining on these heads. Started a new job this week and putting down new flooring in the house, you know... the same reasons we all have trouble getting these projects done.

The spring seats will need to be cut falt... so the step is gone. They should have had that done before - I shudder to think what the pressures were with the inner spring on the raised step...
Be very carfeul during the valve job phase. Shaft rockers need the tip of the stem perfectly placed in terms of heights and you are using non-standard stuff. It's not only a matter of the overall length - but also where the valve sseat is created that sets that placement.