If I buy lowering bolts and I want my vette back at stock height can I just crank them down to thier lowest setting To raise it back to stock ?

 

Depends on the bolts. To lower it can't you just crank your stock bolts to their highest position?

 

I'd recommend adjusting via your stock bolts before buying aftermarket, to see if you can achieve the desired results.

 

You can adjust the stock bolts and get about a half inch drop.

 

If you purchase OEM style adjusting bolts a good static setting to get close to stock ride height is to measure an exposed bolt length above the leaf spring at a total of 25mm. Be sure and drive the car to allow the suspension to settle. For final adjustment, every full turn of the bolt should result in about 1/2" +/- of ride height. perform small increments and drive to settle. Once you have the ride height adjustment completed for the car, it is a good idea to have a 4-wheel alignment performed.

GD

 

I seem to recall that a full turn yielded about 3/16" or 1/4"...but do full rotations so that the direction of the splayed rubber pad is the same...otherwise the pads will come apart and fail quickly.
Also, spray threads with antiseize first, then take the load off the pads when adjusting to avoid them tearing apart. Do this, by putting a small jack with a block (rubber or wood) under the transverse leaf and lift slightly

 

Thanks for the tips I don’t notice the pads have any direction to them that needs to match anything

 

The pads splay and deflect outwards as they get used, from the offset movement of the control arms that they run against

 

oh gotcha how many miles should I expect out of a new set? This corvette is new to me

 

well, 'that depends'...how are the roads, how do you use the car?
you'd be in the best position to figure that out...what's your mileage on your car, and how was it used?

With stock type pads on the bolts you can probably expect about 1/4" compression over the first, say, 1k miles till they deform. That's a good time to get an alignment. Fortunately these cars don't change 'toe' settings much as the suspension goes through its movement, so you can re-adjust them as required...just keep the threads clean. Once deflected a little they won't have a tendency to rotate so you can just mark them with a paint pen or whiteout to make full rotations easy.

You can keep using them and adjusting them as long as there's reasonable pad thickness left so as to avoid metal contact on the composite spring. A long time.

 

Wanted to say thanks to everyone.

I used one of the recommendations above to set the new pad height at 25mm (aka 1 inch) of bolt sticking up above the spring and that seems like it’s the perfect height for a good stance. I also think having between 25-30 mm of exposed upper bolt would be just fine.

I am uploading torque settings for the suspension here for anyone in the future who is doing this job.

I found this video a perfect and accurate “how to”

Again. I used new stock replacement height adjustment bolts, not lowering bolts (or those easy Zip corvette brand clip-on lowering pads) as one of my bolts was sheared off. (Zip may be helpful for you, take a look in their website and they are cheap)

From my research, what I gather is, lowering bolts can be adjusted close to stock - and mentioned above I think - (upper limit for lowering bolts is about 1/2” lower than stock, and you’ll have a lot of bolt sticking out and the ride will be a little harsher. )

Also remember to drive your car around a little for the true settled height. After I installed the new stock thickness bolt the car sat very high until drove it around For 15 minutes… and it seemed to settle even a little more when I took a look on day 2 after it sat in the a garage overnight

I’ll try to remember to come back and upload photos. I think the car looks better heightened to normal height as before I felt like any road debris would damage it and the nose felt slammed a little too much for my tastes…