Competition High RPM Valvetrain Parts

[dzlpwr]

What is recommended as far as valvetrain parts for a 12v turning from 4800-5300rpm? I am only curious about valve springs and aftermarket valves as I have the titanium retainers, hardened keepers, HD pushrods, and billet cam. Are the 60lb valve springs from Scheid holding up pretty well??? Are there any problems with running the stock valves or is something much better needed? Are roller rockers needed? Thankyou for any feedback.

 

[KingS]

the 60 lb spring will hold up fine but I think if I remeber most say to change the pistons to fly cut do to the valve getting to personnal with the pistons at that rpm range.

 

[99CumminsBoy]

just curious but at what rpm are the titanium retainers and hardened keepers needed?

 

[dzlpwr]

I found out that I needed titanium retainers and hardened keepers when I got over the 3500 rpm range. That was, however, with a billet cam. I have seen trucks with a stock cam run into problems once they hit 4000rpm.