4th gen springs on 3rd gen question

[BLURR]

I have a 350 1989 Iroc Z with 60,000 miles and my fuel pump is going out on me. This weekend we are putting a new fuel pump in it.

Well while I had it torn down for this, I thought about putting some 4th gen rear springs on it. I have a pair of 4th gen rear springs from a 1999 Trans Am with about 40,000 miles.

Will these springs change the ride height and would they be better for my Iroc?

I dont want to put them in and then the car sit lower in the rear than the front.

So can someone answer this for me, please.

[jmd]

Couldn't tell you for sure whether they will change the height. They won't be hugely different.

There are thicker upper spring isolators from ~98 - 02.

You will not gain anything.

[Juiced2000SS]

Really no difference in the springs