jagamajajaran

No problem!

jagamajajaran

Thanks!

Nicky43

Thanks. I appreciate your work. I lowered my RT Challenger lower than the SRT8 Challenger and then nobody could come up with the correct specs to align it. I certainly don't want to get into that problem again. I go through tires (especially summer tires) fast enough anyway.

I just want to add that if Chevy put them bolts there for this purpose it probably is NOT an issue for alignment but I'd like to know before I do it.

jagamajajaran

The fact that I didn't remember reading about anyone with a C7 needing to have their alignment adjusted after lowering on the stock bolts made me feel good about making the adjustment too.

Greg00Coupe

Actually the adjustement is really so minor none of the above concerns are really an issue.

What I was surprised with was the stock setting where very inconsistent. I measured the before and after "distances" from about 6 different aspects. Looked to me the factory adjustments where very random........... like each corner was taken from a different parts box stuck on and never adjusted.

Even after I dropped it all the way there is no consistency in the heights.

So my conclusion is drop it and forget it.

CSEVEN

thanks you for the info... going to tackle this project once my new wheels arrive and painted splash guards : )

Nicky43

You bring up an interesting point. These cars are so new that the suspension and springs may still be settling. I think you should continue to take these measurements for a few months and keep it set so the car is the same heights from side to side. That may be why the factory doesn't bother to set them during installation.

When I lowered my Challenger back then I put in new springs all around and the car actually continued to get lower by an eighth to a quarter of inch over the next few months. But that was with brand new springs.

slief

Thank Jag for the great writeup and excellent pictures! Those are great contributions that will help many of us here including myself! I am eagerly awaiting the arrival of my new C7 which should be here in the next 10-14 days and this will be one of the first things I do to it!

Thanks again for taking the time to document the procedure. While it's the same process as the C6, documenting it for the C7 will alleviate any questions others might have.

This should be Stickied at the top of the forum!

arcticblast

Great description and pics. Thanks.

Vetinvett

Thanks, nice write up.

jagamajajaran

Thanks to all! Glad to help, because that's what I was looking for prior to doing this myself.


Mine had 2000 miles on it before I lowered it. But I think everyone would be safe lowering all the way on the stock bolts even if you did so right out the box. You can always raise the car back up if you don't like the height after the suspension settles.

Vetinvett

Great write up..I need to take my wheels off for clean and wax. It looks like it will be easier to do at that time.

Glen e

great advice...people get too **** about these things..the base car does not significantly drop at all on it's own....this is a "just do it all the way down mod" - I took off my front air dam too and have no scrape whatsoever on any parking ingot (car is still higher) or speed bump. I like it a lot better..


and no I don't care about cooling or aerodynamics with the dam gone....

gthal

Glen.. curious why you took it off? Aethestics or did it annoy you when it rubbed?

Glen e

actually, totally both...and I don't believe for a minute that chev requires a front dam on the z51 or base, without spolier, with spoiler, base with or without as they sell you any spoiler you want!!!I have both sets of GM instructions here in PDF and neither say anything about what to do with the front air dam if you mount a z51 spoiler on a base, or the wing, it's all for looks for 99% of us...taking off the front air dam did not change the feel of the car at all at highway speed, affect mileage or anything else that people love to bring up here....

disclaimer: I'm in Florida so it might keep the car cleaner in the north, not my situation...

Greg00Coupe

Going from a c6 GS even with the C7 down on the bolts its like an SUV...... all my scraping issues are gone......... places I use to have to watch out for with the C6.

Can't imagine a ZR1 with a the lower splitter..........

neatwheels

Was the jack bolt arbitrarily turned or was there a measurement from start of each bolt to finish thus turning each one an equal distance?

jagamajajaran

I turned them until they could turn no more. That is the lowest setting. From there, you can measure the height and make adjustments if the lowest setting isn't equal on each side of the car.

faster68

You don't happen to have before and after pics, do you? Would have loved to see how much a difference the procedure made.

jagamajajaran

Here's the front driver side. My front side lowered by 1/4", which wasn't a lot because my bolts were already at a fairly low level. Some have seen much greater lowering because of where there factory bolts were set initially.