I have a 89 camaro its soon to have a 3.8t. I want to upgrade to posi and rear disk woth the ebrake built in. But i dont wanna spend thousands of dollars!! Is there a rear that drops in ??I mean can i swap in a fourth gen? I dont wanna have to change the booster and master cylinder whats the easiest way i can get by with doing this??

 

9 bolt or 4th gen rear both pretty easy to do and would work and fit

 

ok what car do i get it out of and what is pretty easy??? what do i have to change??

 

4th gen rears bolt right in, 3rd gen rears bolt right in. the needed things would most likely be a proportioning valve and e-brake connections.

 

if ur car is an 89 or newer u can put in an 89 and newer rear with out touching the proportioning valve. if u get a rear with disc brakes from an 88 or older (i wouldnt suggest because the disc brakes on the raer of those suckk compared to the pbrs on the 89 and newer) ull need a master cylinder and prop valve from the car the rear came from. dont forget the 4th gen rear is almost 4" wider then the 3rd gen.

 

89 and up came with rear disc? I know about the "1le" package but not anything else. is my best bet to go with a third gen posi disc rear?? Are they readilly avalible? and if i do go with a thirdgen rear every thing will bolt right up and i wont need any spacers for my 15" rs rims so the dont stickk out??? Or am i better of with the 4th gen posi/disc rear? if i do the 4th gen do i have to change the booster and master cylinder?

 

I take it by the above statement that you want a posi disc rear with the internal e-brake like the LS1 cars, right? If so, simply drop in a rear end from an LS1 car (which would be the easiest) or do the upgrade in the tech article.

Here it is:

https://www.thirdgen.org/newdesign/t...reardisc.shtml

You can get the brake system from these guys, $200 used:

https://www.thirdgen.org/newdesign/t...reardisc.shtml


Now to answer your list of questions:

1. Some '89 and up cars came with rear disc but they are getting hard to come by, especially with the better ratios: 3.23, 3.42.
2. I recommend the 4th gen rear for the brakes you want.
3. Those rears are found many places. Look on www.camaroz28.com, it's more tailored for the 4th gen guys.
4. No you won't need spacers and it will bolt right in. I THINK the bigger rear brakes will clear your 15" wheels but I don't know. I'd move up to 16"s or 17"s. You will have a little e-brake work to do to get the cables to fit, especially with the LS1 rears. It's been done so search a little.
5. If your car is a '89 and up, you will not need to change the master cylinder. You MAY need to change the prop valve if you have rear drums stock.

Anything else?


Ed

 

ok the valve u speake of what exactly do i have to do to change it and will it come in the kit?? Also with the fourth gen rear will my tires stick out??? I am intending on switching to 17's but time is money if you know what i mean. Also how can i know for sure that my master cylinder will work?? Its a 89 2.8 with a five speed. Also "stoopid question" the ls1 is posi right also what are the rear ratios??