HP52TA

iTrader: (4)

Wondering if anyone is running a complete 4th gen rear setup on a 3rd gen.

Looking to replace wheels / tires 275/40 x 17 and rear end with a 4th gen's.

Will this clear the stock rear fenders or is rolling required?

I would think the front clearance could be adjusted with the spacers used. Any ideas on spacer thickness?

fast82z

iTrader: (1)

I believe people use 2" spacers for the wheels. A 4th gen rear swapped should need no spacers and should fit that tire fine. I want to say I've heard people going even 315's, but that might be on a 4th gen car.

krisb410

iTrader: (9)

I have a 3.23 4th gen posi rear (off a 95 camaro) with LS1 brakes and Chrome Corvette ZR1 rims, 17" x 9.5" +56mm, Kuhmo ECSTA Supra, 285/40s on it, before the 4th gen rear swap, I had to use 2" wide spacers. Now I did roll the fenders just a little bit with a baseball bat.

I do have a stock set set of 4th gen wheels and tires, and the fenders would not have to be rolled to use them.

On the front I have 275/40s on the same 17 x 9.5, +56mm ZR1s, and I need a 2 1/4" spacer. But stock 4th gen wheels only need a 2" wide spacer on the front.

HP52TA

iTrader: (4)

I am unsure of the actual wheel's width, they are 2001 WS6 Transam wheels. I will check the offsets once I pick them up and compare them to your ZR-1 wheels offset.

The 275/40's will be on a four corners as well. Is this what tire you guys are seeing with 2" spacers up front? I am assuming so, as it is the stock size tire.

89Iroczv8350

i was wondering if any one knows if a 4th gen rear end fits in a 3rd gen ?

krisb410

iTrader: (9)

Did you read??????? 3 posts up

89Iroczv8350

yeah , Im just want to make sure there no special customisations to do this swap. So any 93 and up rear end fits huh ? nice

fast82z

iTrader: (1)

If you ever look for aftermarket rear suspention parts, pretty much every piece is the same for 82-02

89Iroczv8350

I have 373 but no disc brakes. I want to find an rear end with the disc brakes and just swap the hole rear end. But i wonder if my stock 89 Iroc wheels will still fit after doind this swap ?

HP52TA

iTrader: (4)

Yeah, everything works in the back. I am going to be grabbing everything including shocks, springs, and stabilizer bar. The rear shocks have different part #s but look simular so we will see if they fit.

I was also going to try the front stabilzer as well, but am unsure if it will work. The front end of 3rd to 4th gens are quite different.

Flip 2

iTrader: (1)

The 89 IROC wheels will probably NOT fit with the 4th Gen rear!
Different offsets on the wheels.

Camaro5690

iTrader: (1)

I have 16 inch Irocs on a 95 LT1 rear with no problems, they are known to clear LS1 brakes also. The only thing is they stick out a tiny bit.

89Iroczv8350

Sounds great guys . Ill be headed to the junk yard this weekend. Nice rides everyone !