dansean1

iTrader: (2)

Guys, Im buying a rebuilt rear end from a buddy out of his OE rear end on a 97 formula to an 02 LS1. MY LS1 actually is a 3 channel.

Anyone know on the formula the situation if its a 3 ch or 4 ch ABS?

(Im switching rear ends because the formulas is rebuilt w/ 3.73s to my 90k 3.42s which when I serviced it last discovered some metal.)

1redta

I think I understand your question.... one plug on the top, center of the rear equals 3ch and if the car has tracton control it is a 4 ch

dansean1

iTrader: (2)

Where can I find this, normally I would jack up the car but that can't be just done right now.

EPP

iTrader: (22)

If the car has a traction control switch on the dash it has ABS/TCS, which is the four channel. This would have an exciter ring which looks like a sprocket, next to the brake at the axle by each tire. Bob

95GreenZ28

iTrader: (70)

Get it figured out? You can also convert them from 3 to 4 and vise versa

TJSZ

I just performed the same swap, a 97' Z rear end to a 99' Z.
Once you determine the 3 or 4 channel issue, make sure you are aware of the axle hub/wheel stud differences.
The LT1 axles apparently have a larger dia. hub and shorter wheel studs. Your LS1 rims will not mount properly on a LT1 axles without some modifications...
You can use the LS1 axles in an LT1 rear to correct these issues....The axle spline and length were the same.
I am not sure if these issues are universal to all, but definately applied to my situation.