Few questions for the Gen III experts. Sorry if these are rudimentary and covered elsewhere...:

- How much lift can the stock rockers handle?

- How much spring can the stock rockers handle?

- At what point do the stock rockers become unsuitable, a liability, and/or unstable?

- Can you sufficiently cam the engine to use the higher lift flow that is available and still use the stock rockers?

- Can the stock rockers handle .600+ lift?





- Stock rocker's are safe to .585" lift.

- I'd be more concerned about spring rate. Manley or PSI are my favorite 2 of valve spring choices.

- Spun the stock rocker's up to 8400 rpm. The main concern is harmonic's and premature wear to the rockershaft's.

- ??? Probably not.

-No, unless you buy custom valve springs.

Jerry Williams.