HRC Vs. Hotcam Stage 2, what are the specs?

[excess]

What are the specs on these cams and what does each one benefit from?

[nacs400ex]

I got this from the faq forum, but I have no idea what the numbers mean and if its top or bottom end ?? somebody wanna help me out?


400EX CAMS
BRAND & MODEL IN.LIFT EX.LIFT IN@.050” EX@.050” NOTES
STOCK 400EX .316 .302 234 238 OEM
XR400 .326 .321 240 244 BIKE SR
WB ALL AROUND .345 .335 240 248 SR
HOT CAMS STAGE 1 .354 .354 244 244 SR
WEB CAMS 479 .378 .378 250 250 HR,VS,VG
HOT CAMS STAGE 2 .346 .346 254 254 SR
HRC .350 .339 254 256 HOP-UP
GT THUNDER* .350 .345 256 256 SR
WB TRACK* .350 .345 256 256 SR
WEB 450/451* .350 .345 256 256 HR
WEB CAMS463/9i .385 .370 272 270 HR,VS,VG
(In order from shortest duration to longest)
SR=Stock Rockers, Valve Springs & Guides OK
HR=Hard Faced Rockers Recommended
VS=Stiffer Valve Springs Required
VG=Shortened Valve Guides Required
*SAME GRIND

[excess]

yea I just found those a little while ago but I need help reading them.

[excess]

considering the duration statement I assume the first ones are the torquiest and gain more top end as you go on the list? I assume the longer the duration the more top end power the cam makes?