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

C-Beam plates question

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Old Dec 28, 2007 | 10:22 AM
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Default C-Beam plates question

Ive got the dreaded C-Beam problem where the bolts loosen up and it flexes at the extension housing. I was curious if anyone had a good solution. Ive heard the zf docs c-beam plates will solve the problem but wanted to verify first before spending that kind of money.
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Old Dec 28, 2007 | 11:40 AM
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Originally Posted by 95_6spdvette
Ive got the dreaded C-Beam problem where the bolts loosen up and it flexes at the extension housing. I was curious if anyone had a good solution. Ive heard the zf docs c-beam plates will solve the problem but wanted to verify first before spending that kind of money.
New locking nuts from GM will solve the problem for less than $20 (assuming they're still available). If they're not available, blue (medium) Loctite will do the trick.
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Old Dec 28, 2007 | 01:19 PM
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Originally Posted by 95_6spdvette
Ive got the dreaded C-Beam problem where the bolts loosen up and it flexes at the extension housing. I was curious if anyone had a good solution. Ive heard the zf docs c-beam plates will solve the problem but wanted to verify first before spending that kind of money.

I have the beam plates and I'm very happy with them. The ease of removal and install of the C Beam is much esier due to the fact that the top nuts are fixed to the actually beam plate; this elimated the fishing around the top of the C Beam to get the threads started. Is it worth it; yes. The rear end kick out was also eliminated which really helps you hook head on without the rear end shimmy. Hope this helps...
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Old Dec 28, 2007 | 01:33 PM
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Originally Posted by 95_6spdvette
Ive got the dreaded C-Beam problem where the bolts loosen up and it flexes at the extension housing. I was curious if anyone had a good solution. Ive heard the zf docs c-beam plates will solve the problem but wanted to verify first before spending that kind of money.
They're a good product and other than fabbing something yourself there is no alternative that does the same thing.

It has been a while since we had a GP on them. I bet you could get a number of people on board for a new GP if you wanted. Not that they were cheap with the GP, but at least they fell in my book from "ridiculous" to merely "overpriced."
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Old Dec 28, 2007 | 05:28 PM
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i have them, too...and as its said, it makes removal and installation of the c-beam a lot easier...the car als feels more stable under heavy acceleration....
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Old Dec 28, 2007 | 06:19 PM
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Originally Posted by Vis Croceus
They're a good product and other than fabbing something yourself there is no alternative that does the same thing.

It has been a while since we had a GP on them. I bet you could get a number of people on board for a new GP if you wanted. Not that they were cheap with the GP, but at least they fell in my book from "ridiculous" to merely "overpriced."
I'm in for a group purchase....
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Old Dec 28, 2007 | 07:01 PM
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Originally Posted by Vis Croceus
They're a good product and other than fabbing something yourself there is no alternative
but at least they fell in my book from "ridiculous" to merely "overpriced."
No offense to ZF Doc but they are nothing that home handyman couldn't make at home.
2" x 1/4 flat bar , drill two holes and weld something to prevent the nuts from rotating.I used 1/4 x 1/4 bar either side; the nuts don't have to be captive just prevented from spinning.
As with others, certainly tightened up driveline and don't come loose because clamping load is spread over greater area.
Well recommended
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Old Dec 28, 2007 | 07:54 PM
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The beam plates are well worth the $$$ as it makes install of the C-beam so much easier. That's why I have them as I'll probably have to replace the clutch again sometime.

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