rear end question

[crapheap]

i have a 91 z-28 with a gn drivetrain .
my question is i pulled a 9 bolt rear out of an 88 formula ta whats the difference between that rear and the t-t/a rear mines has discs with brake pads that are the same size as the front brake pads, and a plate that says something like" posi 3.45 gears".
how much could one of those rears take power wise , with my old combo i went 11.90's at 116mph ... a lot has changed since then my new combo should take me into high 10 sec territory or super low 11 second territory depending on how brave i feel..so will my rear be able to withstand all the abuse or am i going to spit axel and ring gear material out to the spectators?
olso is this rear stronger than my old 7.5 ?

 

[RobR]

The brakes will be different as they changed in 89. Also you have a TPI 5spd rear if its a 3.45, so it has better gearing.

You should be OK with that rear for awhile. Its much stronger than the 10 bolt it replaced.

 

[crapheap]

just what i wanted to hear thanxs

 

[fly89gta]

Yeah the 89 rear had PBR calipers, much much better


The actual rear though is the same.