ka24de high duration cams

im wondering about the higher duration cams that i believe came in the 91 if im not mistaken? anyone have any specifications on the 91 vs. the other years..like duration numbers and lift?

i believe your referring to the method of using two exhaust cams in a ka24de.
the exhaust cam is slightly longer duration or something than the intake cam, but i dont know the specs right off the top of my head.

hes referring to the fact that all S13 cams have longer durations than s14, and the s13 exhaust cam being the longest..

chassis-Intake/Exhaust
s14 - 232/232
s13 - 240/248

took me less than a minute with google...