Lowering a '91 ZR1

[viperbaron]

What advantages are there to "lowering" a ZR1? Can it be done with the selective ride system? Should it be done? How can it be done? Just an inch or so.
With my '80, lowering the rear is easy with longer bolts, but the front coil springs are more problematic. I was wondering what it would take to lower my '91 ZR1?:icon_scra

[jonszr1]

lowering the rear is just like your 80 (longer bolts . the front howevert is more involved ,you must remove the front spring which is a pain and put on a different bumper . you can find the pieces in any of the corvettte catalogs .or switch to coilovers . to me the car is low enough , my 92 has coliovers which makes it 2 in lower and it scrapes on everything ,even ants jk

[Paul Workman]

lowering the rear is just like your 80 (longer bolts . the front howevert is more involved ,you must remove the front spring which is a pain and put on a different bumper . you can find the pieces in any of the corvettte catalogs .or switch to coilovers . to me the car is low enough , my 92 has coliovers which makes it 2 in lower and it scrapes on everything ,even ants jk

:iamwithst

Mine is NOT lowered, and speed bumps anywhere are a certain drag! For the street, I wouldn't want to go lower. If I were tracking it...That might be a consideration...might be.

With regard to racing on a road course, I wonder what Jeffvette would have to say 'bout lowering the Z? (If anyone would have an expert opinion, he would, I recon.;))

P.

[GOLDCYLON]

Another vote for not lowering it. The car is low enough and the speedbumps in my neighborhood are a PITA no matter what the angle of attack. Especially if you are running a B&B fartcan resonator on the underside in the midline. I see zero benefit beyond maybe autocross and only with the additional modification to coilovers and other suspension mods. other than that its a personal preference. GM did a very good job in the configuration the car is already, JMO your mileage may vary.

[XfireZ51]

Another vote for not lowering it. The car is low enough and the speedbumps in my neighborhood are a PITA no matter what the angle of attack. Especially if you are running a B&B fartcan resonator on the underside in the midline. I see zero benefit beyond maybe autocross and only with the additional modification to coilovers and other suspension mods. other than that its a personal preference. GM did a very good job in the configuration the car is already, JMO your mileage may vary.

I'm concerned with same thing only with Magnaflow resonator which is fairly large.

[Aurora40]

I think the main advantage of lowering the car is the visual improvement. Dialing the rear down a little helps a lot in the looks department.

[XfireZ51]

Any comment on what it might do for traction at the track?
In that same vein, anybody have a preference on FX3 settings for the drag strip?

[jonszr1]

on my blk car with the standard fx3 i get the best results in the middle setting .also disonnect the front sway bar .i remove the spare tire and fill the gas tank almost all the way full they help a bunch

[Kb7tif]

What advantages are there to "lowering" a ZR1? Can it be done with the selective ride system? Should it be done? How can it be done? Just an inch or so.
With my '80, lowering the rear is easy with longer bolts, but the front coil springs are more problematic. I was wondering what it would take to lower my '91 ZR1?:icon_scra

Also keep in mind when you lower the rear with the longer bolts what you would be doing is taking tension off the leaf spring mainly, that would give you some lowering effect. this also softens the spring tension and causes a soft bouncy ride..... The Z has soft enough springs already.:cheers:
And will need to realign.

[Aurora40]

Springs don't work that way. ;) The spring is pushing the car up with the same force as before, which is exactly the force required to counteract gravity. In order to provide that force, it will be as tensed as before. You are simply changing the mounting point, which changes the ride height.

[Kb7tif]

Springs don't work that way. ;) The spring is pushing the car up with the same force as before, which is exactly the force required to counteract gravity. In order to provide that force, it will be as tensed as before. You are simply changing the mounting point, which changes the ride height.

If you are going to lower the rear of the car with longer screws, softening of the rear suspension will result, it did here and will do so there. So much so as i have looked at replacing rhe stock spring with a firmer spring. If I take out the lowering bolts I dont need the firmer spring. Something to consider..