When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Looking for Z51 lowering info. No front lift. Thanks!
That is the set up I have. Its a pretty simple process. All you need to do is adjust the collars on the factory Z51 springs. This will give you about an inch lowering if you go all the way to max.
I had this done by a friend so I didn't do it myself but there are places like Paragon Performance that sell the proper wrenches to turn the collars and people have done it themselves.
They also recommend an alignment afterwards but after checking my car on out dealerships Hunter Alignment Machine everything was still within factory tolerances so we did not need to do an alignment,
So I was told that it won’t be till close to the end of the year for all setups.
Thanks for that insider tip! I’ve been an Eibach convert for 20+ yrs, so I guess I’ll have to wait for these c8 versions.
The Paragon springs are tempting, but the amount of experience, lbs/in testing and qa that go into Eibach spring design is hard to substitute for.
That is the set up I have. Its a pretty simple process. All you need to do is adjust the collars on the factory Z51 springs. This will give you about an inch lowering if you go all the way to max.
I had this done by a friend so I didn't do it myself but there are places like Paragon Performance that sell the proper wrenches to turn the collars and people have done it themselves.
They also recommend an alignment afterwards but after checking my car on out dealerships Hunter Alignment Machine everything was still within factory tolerances so we did not need to do an alignment,
The total trim height range is 1.5-in, however, most of the cars are coming out of the plant with 3/4-in to 1-in of travel left on the collars below the lock rings.
Whether or not you need an alignment depends on how much you lower the car. You can go 3/4-in in front and ½-in at the rear without any alignment work. Beyond that, have the alignment checked after the you do the work.
Last edited by Hib Halverson; May 14, 2021 at 06:17 PM.
The total trim height range is 1.5-in, however, most of the cars are coming out of the plant with 3/4-in to 1-in of travel left on the collars below the lock rings.
Whether or not you need an alignment depends on how much you lower the car. You can go 3/4-in in front and ½-in at the rear without any alignment work. Beyond that, have the alignment checked after the you do the work.
Well, "Boost Monkey"....it's actually a set of two wrenches and if you've actually done a C8 Z51 trim height adjustment, you'd know 1) you need two wrenches not just a "coilover wrench" and 2) you'd see the advantages of Lingenfelter's tools...especially if it's a case where the user goes to the track, lowers the car, then raises it back up after track day and needs to do that on a regular basis.
Bottom line: professionals and advanced DIYs who work on cars regularly use good tools.
If you find some coilover wrenches at Harbor Freight let us know.
Well, "Boost Monkey"....it's actually a set of two wrenches and if you've actually done a C8 Z51 trim height adjustment, you'd know 1) you need two wrenches not just a "coilover wrench" and 2) you'd see the advantages of Lingenfelter's tools...especially if it's a case where the user goes to the track, lowers the car, then raises it back up after track day and needs to do that on a regular basis.
Bottom line: professionals and advanced DIYs who work on cars regularly use good tools.
If you find some coilover wrenches at Harbor Freight let us know.
The Paragon wrench set relies on the user to hold the coil over tube with the help of duct tape with the help of a channel lock if necessary even though the did not use a channel lock in this video:
The Lingenfelter's, at more than triple the cost, has the advantage of having the smaller wrench with a nub to hold the coil over tube:
I'll be taking my chances with duct tape and / or a channel lock ala Red Green. A little bit of PB Blaster lube on the rubber pad between the upper perch and the pad should help as well.
Well, "Boost Monkey"....it's actually a set of two wrenches and if you've actually done a C8 Z51 trim height adjustment, you'd know 1) you need two wrenches not just a "coilover wrench" and 2) you'd see the advantages of Lingenfelter's tools...especially if it's a case where the user goes to the track, lowers the car, then raises it back up after track day and needs to do that on a regular basis.
Bottom line: professionals and advanced DIYs who work on cars regularly use good tools.
If you find some coilover wrenches at Harbor Freight let us know.
paragon’s comes with 2 wrenches. I bought Paragon’s set.
I’ve adjusted a plenty of coilovers and it’s not rocket science man... Just means you’re spending a lot more money on things you don’t “need” to make the job very marginally easier. If wrenches costing triple the price just to make the job very marginally easier is your bag, then knock yourself out.
