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Standard spring adjustment bolt length inquiry

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Old Dec 13, 2011 | 03:25 PM
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Default Standard spring adjustment bolt length inquiry

I have adjusted my front spring bolts to the maximum lift and the front end is still too low. I am thinking that someone had swapped out to a set of lowering bolts.
Does anyone happen to know what the stock length is? My bolts measure 2.25" of THREAD from the pad to the wrench flats.

Thanks!
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Old Dec 13, 2011 | 04:13 PM
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See Next Post!! Way to go bumble-z!

Last edited by Eric D; Dec 13, 2011 at 04:32 PM. Reason: Much better answer than mine...
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Old Dec 13, 2011 | 04:26 PM
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Stock Rear & Front spring bolt.


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Old Dec 13, 2011 | 05:08 PM
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Check for cracks. Just had to replace mine on the 2000 (and my94), and the front came up 3" (2" on the 94). I put the bolts in the same number of turns.
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Old Dec 13, 2011 | 05:51 PM
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So fiberglass springs do sag after all, eh?
I remember when they came out that all of the manufacturers claimed that they never sagged. well maybe not when they first came out but in the late 80's early 90's when I was interested in them.
There was someone making carbon fiber leaf springs for the '67-71 Mustang/Cougars way back when. Does anyone make them for the C5 or did that composite have problems in this kind of application?
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Old Dec 13, 2011 | 06:11 PM
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Well... Your interpetation of front being "too low" is what?

What size front tire & wheel are up front?

Have you actually looked to see if you indeed have the stock adjuster up front with it's complete rubber bushing intact & uncut?, or an aftermarket with no bushing at all?

What is the measurment, centered on your front wheel, from the ground to the bottom lip of the fender?

What is the measurment/gap from the top of the tire to the bottom lip of the fender?

AS you can see by the picture of an uncut GM adjuster, there is an extra 3/4" of rubber bushing.. compared to a GM cut bushing adjuster or aftermarket adjuster.

By the way, how is the condition of the front shocks?
Good luck.


If you have threads still showing above the spring, turn the bolt down till you dont have threads showing. Remove & store the retaining clip in a zip lock baggie for a rainy day.
Good luck.

Last edited by bumble-z; Dec 13, 2011 at 06:39 PM.
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Old Dec 13, 2011 | 06:30 PM
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Thanks for all of the answers.
My interpretation of too low is that I want it higher than what I have so that I can get in and out of my driveway without the bit of scraping that I currently get. My son's '98 Vert does not scrape but I have not gotten under it to inspect as it is cold and rainy the last few days. My little bullet catalyzers and the air-dam are what scrape. The city will not allow me to modify my driveway entrance as they have decided that the first 8' of people's property belongs to the city.
I have new 245/40-17 PS2s in front and almost new Koni FSDs all around.
The adjusters have the pads on them and a circlip to prevent them from being adjusted too far.
If it comes down to it I will make a new set that fit my needs. Out of Titanium...

Last edited by The Mountain Kat; Dec 13, 2011 at 06:31 PM. Reason: typo
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Old Dec 13, 2011 | 07:18 PM
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You should have lots of ground clearance with them cranked to the maximum height.

You did turn the bolts until there is no bolt sticking out of the top of the spring, right?
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Old Dec 14, 2011 | 08:42 AM
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Originally Posted by lionelhutz
You should have lots of ground clearance with them cranked to the maximum height.

You did turn the bolts until there is no bolt sticking out of the top of the spring, right?
I turned them until there were no threads above the spring anyways. I'll not trust a fiberglass thread farther than that.

I figure that the weight of the SC and IC sitting so far out in front of the suspension has cost me some height. It doesn't comprise the entire problem but it does contribute to it.
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