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Author Topic: Correct exhaust pipe to manifold nuts  (Read 8702 times)

9T4Z

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Correct exhaust pipe to manifold nuts
« on: December 08, 2007, 05:59:04 PM »
I have seen a few "correct" nuts.  I have tried to Xreference the original part  number of the nut (it is the same for L6 and all V-8's) and is 3829086 which at AMK turns up an ordinary grade 5 3/8-16 nut.

The locking versions I've thought were correct are in these pics, my prejudiced preference is for the ordinary nut style in the first pic.

Thanks for comment please
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Gary 9T4Z

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JohnZ

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Re: Correct exhaust pipe to manifold nuts
« Reply #1 on: December 09, 2007, 12:02:43 AM »
The crimp nuts with the "neck" in the bottom photo are GM #3829086; same nut was used on the Corvette, and its configuration has been well-documented for many years.
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9T4Z

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Re: Correct exhaust pipe to manifold nuts
« Reply #2 on: December 09, 2007, 01:49:04 AM »
Thanks John...  I usually buy each part three times!  ;)
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Gary 9T4Z

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Jerry@CHP

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Re: Correct exhaust pipe to manifold nuts
« Reply #3 on: December 10, 2007, 01:37:50 PM »
You have to have these for full credit in the "Legend Certification" at the Camaro Nationals.  Many install the incorrect ones but the good new is Rick's !st Gen now sells them with the exhaust stud kit.

Jerry
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JohnZ

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Re: Correct exhaust pipe to manifold nuts
« Reply #4 on: December 10, 2007, 07:04:06 PM »
Paragon has carried them for many years - #6498K.
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RamAirDave

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Re: Correct exhaust pipe to manifold nuts
« Reply #5 on: December 11, 2007, 04:09:19 AM »
The nuts in the 3rd (bottom pic) are the ones I have always received in the AMK kits.
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9T4Z

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Re: Correct exhaust pipe to manifold nuts
« Reply #6 on: December 11, 2007, 04:53:26 AM »
Quote from: RamAirDave on December 11, 2007, 04:09:19 AM
The nuts in the 3rd (bottom pic) are the ones I have always received in the AMK kits.

Yes and the nuts are available separate from the studs at AMK and the price is very reasonable at $1 each.
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Gary 9T4Z

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KevinW

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Re: Correct exhaust pipe to manifold nuts
« Reply #7 on: December 17, 2007, 08:23:25 PM »
I'm confused.  part number 3829086 in the 2005 AMK catalog is a coned nut, not what is pictured in the first post (huglok).  There are a couple of different thicknesses to the huglok nuts.  Which ones was used for 69 Camaros?
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Dave69x33

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Re: Correct exhaust pipe to manifold nuts
« Reply #8 on: February 23, 2008, 07:50:39 PM »
I just purchased a set #6498K from Paragon Corvette Reproductions, $9.00, per JohnZ's recommendation.  Paragon list them for 1956-1981 Corvette, Original Style, Zink Plated, Exhaust Stud Crimp Nuts.  Here are a couple of pic's for reference.

Available from:
Paragon Reproductions, Inc
Phone: 810-655-4641
Web-site: www.Corvette-Paragon.com
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