Why No Protest?

[Rick Leininger Jr.]

There are 1.300" dual springs available that are 850 lbs.+ over the nose, some of you guys are kidding yourselves if you don't think this rule will get taken advantage of.

Steel "hydraulic" roller lifter bodies are available. Any pushrod OK, and the heads can be ground for them. Now any spring that fits the pockets. The rocker will be the weak link.

[Alan Roehrich]

There's a limit to how much spring pressure you can use, and after that, you're just wasting power and creating problems. If you think the valve spring rule will suddenly add 1000RPM of usable power band you will be sorely disappointed in most cases.

You can only make a cam lobe so aggressive before you run off the edge of the lifter. There's already plenty of spring available to deal with that limiting factor.

It seems a lot of people thing "if a little is good, more is better, and too much is just right". That is not necessarily true with valve spring pressure.

It is not just valve spring pressure that is breaking rockers.

[X-TECH MAN]

Originally Posted by Alan Roehrich

There's a limit to how much spring pressure you can use, and after that, you're just wasting power and creating problems. If you think the valve spring rule will suddenly add 1000RPM of usable power band you will be sorely disappointed in most cases.

You can only make a cam lobe so aggressive before you run off the edge of the lifter. There's already plenty of spring available to deal with that limiting factor.

It seems a lot of people thing "if a little is good, more is better, and too much is just right". That is not necessarily true with valve spring pressure.

It is not just valve spring pressure that is breaking rockers.

Lobe design causes a lot of harmonic problems. Incorrect heat treatment on some of the out of country made parts cause a bigger problem. Buy known quality parts and have them frozen and coated helps. Check your rocker arm geometry.