Whats is worth 8 3/4 with suregrip, drum to drum, 3.91's

rumblefish360 said
A lot of the rears longevity is coupled with car weight, manual or auto trans launch rpm, power (torque) of the engine multiplied by the rear gears.

What is the cars goal?

the cars goal is 9's , trans brake 727. forced induction SB
my goal at the moment...is to figure out what my rear end is worth.lol