Mopar 8 3/4 rear strengths?

[Joe <jgray_55@xxxxxxxxx>]

Anbody familiar with the Mopar 8 3/4 rearends?  I'm
going to instal a road runner housing assy  in our 74
AMX  behind the  freshly built up  401(9:5/1
compression/comp 280H..ported heads... 1 7/8
headers,..etc..Question..there are three diffrental 8
3/4 differental casings..# 741,742,489. I know the 741
is the smallest diameter pinion shaft and is the
weakest..BUT..HOW weak?  Anyone used one?  I've
located several 741's and a couple of 742's that i can
swap  some parts to get.Thanks for any help, Joe(still
trying to finish this car for my wife after gettin
laid off....SUCKSSSS)


		
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