How big of a cam can I run before I need rocker rail end stands?

 

How big of a cam can I run before I need rail rocker end stand supports?

 

WELCOME to FTE!

The spring pressure is a better indicator of how much you need end-stand supports. I wouldn't know, I ran .554/.554" lift with the stock rocker shaft setup.

Someone will be along to offer an opinion soon

 

Spring pressure, valve lift and rpm all play a role.
Our valve lift is .736
RPM 7000

If I were you, I would use end stands on anything above 6500 rpm and .600 lift with dual springs. It's good insurance.

We have one piece solid billet aluminum stands, from a company that is no longer in business. To bad, because there is virtually no deflection.

 

Nice looking rocker setup. Who made it?
I've got a Erson setup with two piece stands.

 

Rocker Arm Specialties out of Redding California. Unfortunately they are out of business.