400EX Hot Cam Stage 3 Big Bore

[racerx573]

I have a Hot Cam stage 3 cam for a big bore 400EX. New in box

$125

whats the diff between the 2 and 3??

[racerx573]

Stage 3 is specifically for big bore and stroker engines.

good for high end or low end...and is this good for a 416 or a 426??