Would anyone be interested in a set of coilovers for their C3. A company has designed coilovers and I will getting some in w/in the next couple of months. They just did a test fit on a 69 last Friday and a fine tune. I'm just pretty much putting out some feelers for right now. I think the set will be around $525. There are 2 different types. Drag and street. The drags are a 90/10 and the streets are a 50/50. They are also ajustable. I will post more info on these coilovers as soon as I get some more info on them.
Dan

 

Hi Dan,

I would definitely be interested. I am assuming that these would be front coil overs. A goal for many of us is to have coil overs on both ends.

Ken

 

Dan how would the coil overs mount. The stock lower mount has only 2 5/16 bolts so that is not enough and other then adjustablity in ride height what is the advantage of coil overs over our present large diameter springs.
For the back I can see it to get rid of the buggy spring and make it true independent suspension but we already have that in the front.
I am asking these questions because I keep debating on weather to go with coil overs or leave the present working front end alone.

 

yes the coil overs are for the front. As far as mounting them, I'm not sure if they will bolt right up or if they give you any sort of hardware to mount them on the lower a-arm. I believe they will mount the same on the top. I just heard about these on Friday so I do not have a lot of info on them. I think they might of figured a way to use them w/the stock mounting points. They are going to send me some literature on the coilover set. Hopefully it will give me all of the advanteges and adjusting optoins allowed by the coilover setup.

 

Are the 90/10's adjustable to 70/30 or 50/50???

 

is it a true coil over or a semi one like from speed direct and carrera??? A full coil over will not bolt in, not only will the stock lower mount be a problem, the upper mount has to be removed and modifed for an eye type mounting setup.

 

I was thinking the same thing Twin Turbo. While for me changing the lower A arm mount is easy for most it is too much work. I could see an insert in the lower A arm and use the existing 5/16 bolts to keep the insert from moving but not as a load member. The upper mount is a bannet and that is also a problem.
Is there any advantages to coil overs other then adjustablility for height. My stock large diameter springs should work the same as coil overs other then height adjustment plus my stock springs are less prone to bottoming.
In the rear you must use at least 12 inch springs stronger then 250 pounds to prevent coil bind, the front has even more movement.

 

GSC3
the drag coils will be a 90/10, 90/20, 90/30, 90/40. I'm pretty sure thats the way he told me it was going to be.

Twin Turbo-
Honestly I don't know. I haven't even seen a picture of them yet.

 

Doesn't the total of both numbers have to be 100??? 90/10, 80/20, 70/30???
I thought that it's a % of resistence (90 % resistence for compression and 10% for extention etc...) but I'm not sure.. I don't really understand too much about that...

 

Doesn't the total of both numbers have to be 100??? 90/10, 80/20, 70/30???
I thought that it's a % of resistence (90 % resistence for compression and 10% for extention etc...) but I'm not sure.. I don't really understand too much about that...

I thought the same thing GrandSportC3

 

What you guys never heard of giving 110%? Why not 120 or 130%? :jester

j/k, should add up to 100% like you say GS. :thumbs:

 

I thought the same but thats how he explained it.

 

When the numbers are related to percentage of stiffness out of the total then yes the numbers have to be 100%. The first number is for compression the 2nd for extension so bump/rebound. A 90/10 shock has 90% of it's stiffness in the bump and 10% in the rebound. Some manufacterers put rates on the shocks that look like stiffness percentages but they are in fact valving combinations. So if you see a 60/50 shock or something like that they are valving numbers. Most manufacturers have lists of shock numbering or valving specs so you can see what it means in respect to stiffness.

 

very interesting!! :thumbs: :thumbs:

 

Hey guys, I got some more info about mounting the coilovers yesterday. You have to knock off the 2 nuts that are on top of the a-arm cup. Than drill out the hole to accept a 3/8" bolt. The coilover will mount on top of the cup instead of underneath. There has been a few questions raised about the strength of it by doing this but they guy told me it will be fine. If you are really worried about it, you can always fab up a plate to reinforce it. Which I will probably make. He also told me it would mount the same up top. I don't know if they maybe put an extended rod on top of it so that it will slide right it or what. The only problem they ran into was that the coil made the car sit at 27 1/4" at it's lowest point of adjustment. I think they are looking at getting a lower drop w/the coilover.

My question to some of you is how high does your vette sit? Can some of you please take some measurements for me? I need measurements from the ground to the center of the wheel well lip. I measured mine last night (it's an 80') and i got 27" on the dot. I also have the front transverse monospring up front. I'm running stock rims and 255/60/15's. Also if any of you have SB w/BB coil springs please let me know that as well.

All info will be very helpful and appreciated. Thanks a million.
Dan

 

I will measure tonite.. I'm at work right now and will race the C5 after work.. so I'll only get to measure late tonite...

 

thats fine. i appreciate it.

 

sounds like a set of semi coil overs and from the description I suspect they're the speed direct shark bite stuff. The carrerra ones come with a plate (maybe the plate can be ordered seperately???)

I'm interested in full coil overs but they will never be bolt on.


[Modified by Twin_Turbo, 12:32 PM 11/26/2003]

 

Twin Turbo my front end is comming apart tonight after checking bump steer for a before and after test. The springs are out and jacks are used to raise and lower the suspension. I am pulling both A arms and installing a spreader bar.
Now is the time to modify for true coil overs but why? What is their big advantage? I like the ride height so why mess with it?
If I could find one good reason to improve handling or ride quality I would do it. I hate working with the big springs and they have to go back in but other then that is it worth $800 for me to go that route?

 

:lurk: Sounds like a must have. I would measure, but I just install a LS1 A and it sits highier now. Will rear coilovers be available.