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Looking for 10" spring bolts

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Old Jun 21, 2020 | 04:01 PM
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From: chatam nj
Default Looking for 10" spring bolts
Anyone have part nbrs and website. Looking for grade8 w/o having to pay Corvette-tax. If you have a set fpr sale - pls let me know.

Already have the 8" bolts/nuts and could look to trade if anyone wants to swap.
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Old Jun 22, 2020 | 02:25 AM
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try tractor supply store. they are plentiful around here. Otherwise one of the vendors should have and or a fastener specialty store.
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Old Jun 22, 2020 | 04:25 AM
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10 inch bolts are too long. They're down below the rim. You got a flat tire the bolts hit the ground bad things happen. You have too much curve in your spring.
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Old Jun 22, 2020 | 09:38 AM
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Originally Posted by derekderek
10 inch bolts are too long. They're down below the rim. You got a flat tire the bolts hit the ground bad things happen. You have too much curve in your spring.
Although I agree there's likely too much arc in the spring and it's always best to fix the problem, if you're running a larger than 15" rim you can get away with a longer then 8" bolt. Only real way to know the safe limit is to measure the clearance on the car
M
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Old Jun 22, 2020 | 09:50 AM
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Just about any Corvette vendor that carries 84-96 parts, should have 10" rear spring bolts. Stock C4 spring bolts are 9", the 10" ones are sold to lower C4's. I have a couple customers who have successfully used the 10" bolts on C3's.
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Old Jun 26, 2020 | 08:24 AM
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What’s the diameter and thread size of these bolts?..I need to lower my rear about an inch.
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Old Jun 26, 2020 | 08:37 AM
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9/16-18 Grade 8
(not sure they fit you 99 model though
M
Last edited by Mooser; Jun 26, 2020 at 08:37 AM.
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Old Jun 26, 2020 | 08:38 AM
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Originally Posted by Mooser
9/16-18 Grade 8
(not sure they fit you 99 model though
M
cool..thanks for the quick response
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Old Jun 26, 2020 | 03:30 PM
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Originally Posted by Mooser
9/16-18 Grade 8
(not sure they fit you 99 model though
M
MOOSER I’m using them on my 1975
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Old Jun 26, 2020 | 03:40 PM
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(just kidding)
M
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Old Jun 26, 2020 | 08:03 PM
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I’ve been to several places and haven’t found anything close to this size..are these suppose to be fully threaded?
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Old Jun 26, 2020 | 09:07 PM
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No, only the bottom couple of inches needs to be threaded, otherwise you wouldn't need longer bolts.
Typically the 8" bolts are sold be any vendor that sells the glass springs (CC, Van, etc)
The C4 bolts are just over 9", some vendors sell 10" ones to lower the C4
Heavy equipment (transport, bulldozer type places) will carry or can get them
Fastenal but you normally need an account for them
M
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