you'll snap a pinion on a dana before you snap one on a 741... the 741 has a tapered pinion where the 742,489, dana 60 have a step near the bearing seat area... its a weak point just like stock cranks... And its a bigger diameter than a dana (think a 8.25 is close to a dana though)...
the 741 is more than strong enough for anything, its the spiders that blow up... but gears are getting very hard to find...
