978Racing

Hello,
A fairly reliable source of info told me in order to do the LS1 Rear brake upgrade on my 93 LT1, I will need to CHANGE the AXLES. Is that true???
I already have the brackets,rotors,calipers, e-brake cables, and misc hardware.
Thanks,
AL

spartyon

You should be fine. I am doing the same thing you are with an LT1 rear. You need the LS1 backing plates but you already have those.

978Racing

Sounds Great!
The rotors and emergency brake set up is different than the Stock rotor. The LS1 rotors uses a shoe type set up for the e-brake on the back of the rotor and the disc caliper provides the rear brake. It is a superior set up over the stock LT1 e-brake. I was not sure if there would be some kind of axle clearance problem?
AL

rngilliland

The LS1 axles are about 1/8" different length than LT1 axles. I think the LS1 ones are shorter but I can't remember for sure. Some people seem to have problems using the LT1 axles and some don't. I had them so I used the LS1 axles. If I hadn't already had them I would have just used the LT1 ones.

978Racing

Wow,
That could make a difference! Since the rotor attaches to the axle hub, it could throw the alignment off. Maybe I'll hunt for some LS1 rear axles before I start. I'm on vacation and I was going to install them today. I think I'll wait now.
Appeciate the information,
AL

wrd1972

I have heard it both ways, I also heard that shimming can resolve any issues.

978Racing

Shimming an interesting idea, and maybe a decent way to correct it.
Thanks,
AL

978Racing

Shimming would be a much cheaper way to fix, rather than getting new axles. I need to find out whether my axles are shorter or longer for sure before I start. I have all the other parts painted and ready to install. I also could use a good pic of the e- brake set up showing the position of the cable bracket because the whole emergency brake dealt is completely different than my stock LT1.
AL