Roller cam newbie Once you start going down the rabbit hole!

The reason a roller cam requires more spring pressure than other types of cams is you have to keep the rollers on the lifters planted on the cam lobes.

Selecting the correct valve springs and installed height is not a guessing game. If you don't know or understand what you're doing you need to ask the advice of the cam company.

A stable valve train or the lack of will kill an engine quickly. Personally most guys over look the finer points of the measurements and the geometry.


.535" lift with a 1.5 ratio rocker is only a .3567" lift on the lobe. You divide it, not multiple it.

Those spring pressures you mentioned above do not have enough pressure for any type of roller cam and running a low cost single spring is just asking for trouble.

Running a low cost dual spring setup will save the engine should you break one of the coils.


Tom