ok. i know this question has been asked before, but the more i read i think the more I get the brakes confused. I've got a 4th gen rear that im going to be stripping to install into my 83 rear that I just got (4th is in the car and I dont like the looks) but it brakes weird with the bigger brakes in the back. If i remember right the later RSs had bigger front brakes than my iroc, but they get different spindles? The reason I ask is theres one at a bone yard near me and I could get the spindles and brakes cheap, as I dont have the cash for the c4 upgrade yet.

 

There are two fourthgen rears, the LT1 (93-97)and LS1 (98+).

All thirdgen front brakes are the same, to include spindles: Delco-Moraine iron calipers with 10.5" rotors. The exception is the 1LE, which had dual piston alum calipers and 11.7" rotors.

JamesC

 

i have the lt1 rear, its out of a 94. sorry guess I'll just have to wait for the c4s i guess

 

BTW, the 1LE set-up and its alum calipers will match the LT1 rear and its PBR's.

JamesC

 

i also have the lt1 master that I could install. does that make any difference?

 

No. If you're going from drum to disc, swap the proportioning valve for best brake performance. You'll need to consider e-brake and the drive and/or driven gears as well. Check the following FAQ (toward the bottom) for more info:

https://www.thirdgen.org/forums/tran...-10-bolts.html

JamesC

 

yeah, the gears and everything will work when i switch over. everything is staying 3.42 brakes were the only debate. i think that Eds going to be getting lots of my money this summer