[Formulajones]

Originally Posted by Jay S

Bulter carries the HLJ “SE”, the end of the description helps describe the limit on RPM’s with them.

https://butlerperformance.com/i-3164...tegory:1234800

I ran the set in our 327 to 7300 rpm where we finally saw what appeared to be valve train control going away. It made peak power from 6700-7000

That engine has 145 on the seats for that bullet cam, titanium retainers etc .. so it's not a heavy valvetrain.