Poor Little Cone Style
...and how about those horrible, weak *** 741 cases???
May be the weakest of the 3 but still pretty stout...seen several mid to hi 10 sec cars run them and not break...I would and have used them many times,believe what you will but I would not be afraid to run a 741 case or a cone type sg..I feel the cones type are more aggressive and have read as such but just my 2cents...you can break anything if there is a problem such as warped,cracked,misaligned,loose,not adjusted right,out of balance,etc..and some of these pieces have been slammed on for 40 plus years so some of them are going to fail...I have had good luck with these fallacies at swapmeets from people who think they are junk and I buy them cheap and then run the crap outta them...right now I have an almost brand new detroit locker that was in a 3.91 742 case chunk in a 69 RR,440 4sp,guy had a sg in it that went bad[supposedly] so he had it redone and they rebuilt the 3rd member and installed a new detoit locker, he drove it around for 2 days didnt like the 'clicking' sound when he went around corners so he pulls into my shop and asks me if I have a 3.91 sg laying around, at the time I had several 3rd members in all three cases with sg both types but the only 3.91's I had were the 741's with the cone style from a low mileage trk..he insisted on wanting them so I installed them and kept the unit I removed..I removed the detroit and put it in my 3.73 489 case I had for my dart and sold the 3rd member he had minus the detroit locker..I tried to tell him that what he had was better and that they are a little noisey[the locker] but he drove away happy and his car was no slouch and he beat it up regularly at 11.80's..and it is still going [5+yrs]...point is that all of the cases and sg's are good or MA MOPAR wouldnt have kept producing them,and for 98% of us one is just as good as another as long as its a good operating unit to begin with and is maintained properly,anything can break or cease to perform properly due to wear and tare and abuse...higher hp and torque can require stronger units hence the dana..but for the average street and strip guy any of the 8 3/4 cases[741-742-489] or either clutch or cone type sg will suffice for the most part....backbracing and better bearings,axles,springs,yokes etc helps them live longer and perform better,but if you are 650+hp and torque then you may be looking at upgrading to a dana or what ever especially if it hooks good and big sticky tires/slicks...weight is also a factor...again just my 2 cents worth, and opinion, but I have also lived it and done it and it is what I know and believe....And I agree with RUSTY on his post..just because someone says a 741 is weak and not to use them or that a cone style sg is not desireable so pass on it...is a falsehood....but if you feel they are junk just send them my way I will take them all...
