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Old 08-14-2003, 08:24 PM
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a-arm bolts

I have a 55 chevy with a front clip from a 70 Chevelle. I am replacing most everything with a kit from PST. One of the bolts on the lower control arm was rusted solid to the bushing. We had to use a torch and cut the damn thing out. So I am in need of at least one new bolt. My plan is to replace the other bolts as well.

Are there any special requirements for those bolts? Can I just go to the local hardware store and find something that will work?

--Jeff

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Old 08-15-2003, 03:03 PM
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Can I just go to the local hardware store and find something that will work?
NO!

If they are still no longer available from the dealer, you need to get the measurements and replace them with the same type of fastener (say integral washer for example) in at least Grade 5. Make sure they are quality domestic fasteners.
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Old 08-16-2003, 07:29 PM
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DO NOT use stuff from a hardware store. Most hardware stores don't carry anything better than grade 2 any more. Grade 2 is barely better than plastic. I broke a 1/2" Grade 2 bolt the other day with a couple of box-end wrenches & a partially dislocated collarbone. Take the corresponding bolt from the other side to the junkyard & see if they have one from a similar car. Try Chevelles, Novas, & Camaros (and clones) from the 70's.

Last edited by jimfulco; 08-16-2003 at 07:29 PM.
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Old 08-21-2003, 12:08 PM
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Grade 8 bolts are what you want to get. Look for at least 3 ticks on the head of the bolt. That tells you it is a Grade 5 bolt, Grade 8 has 5 ticks, if memory serves me right. Don't use anything less than Grade 5. Don't get hardened bolts either! Hardened bolts are too brittle and will crack and break under strong shock/load applications. Find yourself a suspension shop or a machine shop or a machine parts supplier for the bolts. Stay away from local hardware store stuff, it is too weak for the type of work you want it to do.
Goog Luck!
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Old 08-21-2003, 05:16 PM
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Quote:
Originally posted by jpd37
Grade 8 bolts are what you want to get. Look for at least 3 ticks on the head of the bolt. That tells you it is a Grade 5 bolt, Grade 8 has 5 ticks, if memory serves me right.
I checked my books, the Gr. 5 bolt does have 3 ticks on it but the Gr. 8 has 6 ticks. The same applies to the nuts, but instead of ticks they have dots.


Marc
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