I have a 91 RS with the TBI...I want to put the rear end in from the 91/92 Z28 with posi and disc brakes...Has anyone done this and will it bolt right up??? How about the Brake lines?

 

Yeah i would like to know as well. But i know for sure it will bolt right up just that i have questions on the brake lines and M/C and the P/Valve too. Sorry didnt mean to steal your tread bro

 

it's all good dude..i wonder what to do...hmmm

 

Off memory here so dont hold me to it!!But they will bolt right in.The prop valve will have to be changed with one that is factory for the discs or get a adjustable one because the discs require a diff pressure(cant remem if its more or less).The main brak line for the rearend can be disconnected on top of the rearend or right before the rear beside the fuel line connectors.You need the E-brake cables from the disc rear too and they can be taken loose above the driveshaft in the tranny tunnel and hooked up in the same place on the car you are putting it in.The M/C i hear mixed opinions on so cant say for sure there.If the rear has a diff ratio and it mostlikly will you need to change the speedo gear or get some kind of programmer if its elec speedo.

Thats all off memory though-and a bad one at that!!GL

 

Forgot!!I hear there is a diff between the disc and drum spacers too.

 

The rear will bolt right in. You can leave the PV alone and you don't need to worry about spacers. All brake lines and E-brake cables will hook right up. You only need to worry about speedo gears if you are going with a different ratio ring and pinion gear.

 

thanks guys for the info

 

You need the brake lines from the disc brake rear, of course. The master cylinder and prop valve are the same for both.

You will need to change the speedo gear in the trans, as the one from the Z28 will be a 2.73 if its a 305/auto, a 3.23 in a 350/auto, and 3.08 or 3.42 if its a 305/stick/1 cat or 305/stick/2 cats.

 

Thanks for the info...do you know what the gear is on it now?