C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Lowering question

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Old Jul 28, 2007 | 11:23 PM
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Camaro350z28's Avatar
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Default Lowering question

Ok i posted something about this before, but my car had the lowering bolts installed before i bought it.. one side shows like 19 threads the other shows 1 thread and it has no cotter pin.. its kinda scary.. so i was wondering what do i need to do to fix this?
if i tighten up the one side it will raise that side correct? cause as it sits not its level... do i need new springs and then readjust the bolts?
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Old Jul 28, 2007 | 11:36 PM
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It should have a cotter pin like the other side. Probably why it came loose. Tighten up the bolt to even it with the other, and see how it sits. You don't want that nut to come off on you while you're driving. If it does, that corner of the car will drop down, your spring will hang, and parts will be rubbing.
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Old Jul 28, 2007 | 11:38 PM
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there are no cotter pin holes. but i will try to tighten it up to the other side and see what happens.. i was another 1/4" lowered but i dont know what else to do to get it down

just looked and i thought one side did have the cotter pin but i was wrong.
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Old Jul 28, 2007 | 11:54 PM
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Ah that's right, those aftermarket lowering bolts come with nylon nuts and no cotter pin holes.
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Old Jul 29, 2007 | 01:47 AM
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First: check to see if the bolts are the same length.... Next: use a lock washer with another nylon nut and double lock it... should hold just fine
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Old Jul 29, 2007 | 07:43 AM
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People get fixated on number of thread on the bolts before I'd move anything I'd check and see if its level!

If the nylocs on your lowering kit work properly you have no need for cotter pins/safety wire/double nuts etc.
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Old Jul 30, 2007 | 09:32 PM
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the car is level. but i want it about a 1/4"-1/2" lower just in the rear.. how can i do that? any easy thing to do or ?
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Old Jul 30, 2007 | 11:14 PM
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Originally Posted by Camaro350z28
the car is level. but i want it about a 1/4"-1/2" lower just in the rear.. how can i do that? any easy thing to do or ?
If you have 19 threads showing its easy, if you only have one thread you can lower it using that bolt. You can get longer bolts, or move some of the spring perch shims from on top of the spring to underneath the spring IOT raise the mounting of the spring (which will lower the rear of the car)
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Old Jul 31, 2007 | 01:00 AM
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ahh gotcha, sounds pretty cake. hopefully i remember to take photos before and after this time. thanks for the help guys
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