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Author Topic: Documenting 68 Camaro Fasteners & Hardware  (Read 9844 times)
lakeholme
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« Reply #15 on: February 27, 2012, 07:57:22 AM »

Yes, this involves a lot! But your comparisons to the 69 AIM are very helpful. Pages from 68 to 69 do not always correspond, but if you look long enough in the same UPC sections you can find most.
Yes, it makes sense that on many parts the screws/bolts/etc would have been the same markings but certainly not all for several practical reasons.
Thanks for the list!
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Phillip
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Planning 2016 Sentimental Tour, AACA (and restoring a 40 Buick Special for it)
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"Charlotte AutoFair, presented by the Hornets Nest Region, AACA, is the largest and greatest Collector Vehicle Event in the Southeast USA."
IZRSSS
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« Reply #16 on: February 27, 2012, 12:00:16 PM »

Chick & Phil - Here's an update of the fastener headmarkings we have so far. Maybe they'll come in handy...
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IZRSSS
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« Reply #17 on: February 27, 2012, 12:00:50 PM »

...
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IZRSSS
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« Reply #18 on: February 27, 2012, 12:01:27 PM »

...
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lakeholme
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« Reply #19 on: February 27, 2012, 02:33:18 PM »

Great! Thanks, Marty.  Like I said above, I'm finding a consistency on most of the multiple screws/bolts for the same part.
Next weekend I'll get started on Chicks list for 68/69 AIM, which he has already checked.
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Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA (and restoring a 40 Buick Special for it)
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair, presented by the Hornets Nest Region, AACA, is the largest and greatest Collector Vehicle Event in the Southeast USA."
68camaroz28
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« Reply #20 on: March 23, 2012, 06:45:18 PM »

Some valuable information concering quality and possibly safety of j-nuts! GM part # 3892755, found in 68 AIM page 66 (UPC 4 B1), attaches the front leaf spring bracket to the underneath unitized body. The j-nuts that have both quality and supply peace of mind concerning safety are the ones imprinted with a "CIP" and can be purchased through AMK. There are other similar generics that look similar but upon closer inspection they have issues and when you go to torque to the required 20 to 30 ft. lbs. you have risk of the thread pulling. Non CIP clips I looked at did not have full thread, and had less threads by up to 50%. This is not meant to communicate anything other than a CIP clip is junk, only that inspection and thought to where you purchase might be the prudent thing to do. In fact, not "might be" but "will be" the prudent thing to do. Let me tell ya what happened and then read an older post I found but found after the fact.
Remember recently I took the dummy rear out of the car and installed the original re-built 12 back in. After paint to install the dummy rear some new generic j-nuts were installed and used. When I took the dummy rear out I noticed the new j-nuts in location as the originals I had taken out when the original rear was removed. When I installed the orig. rear back in all six of the screws started nicely (3 for each bracket) and I hand snugged/tightened with a normal length 1/2" rachet and socket. Everything was fine or so I thought. After the rear was installed I later got under the car to torque those rascals to the required 20 to 30 ft. lbs. Set the torque wrench to 20 ft. lbs. and started to tighten but the bolt turned and turned. Realized quickly something was wrong. Went to another j-nut/screw and tried that one with same results but I gave it one or so more and I heard a pop sound. The thread had wiped off. Luckily the screw backed out like nothing happened and dropping the front leaf spring perch is pretty easy but the j-nut was junk. Ended up changing all three on the left side with 'CIP' j-nuts and guess what, they torqued with no issue. Went to the right side and tried to torque one with same negative result. Just decided to drop that front leaf spring eye and change those 3 j-nuts immediately. After changing the right side, all three torqued with no issues. Here are some pics showing differences and another write up found after the fact. Lesson learned by me that could save some of you some time and again possibly safety!. Still available through GM but the part # changed to 378276. AMK uses that 378276 part # in their catalog as well.
http://www.gmpartsdirect.com/results.cfm
http://www.camaros.net/forums/showpost.php?p=1288560&postcount=94
Old used CIP to poor quality copy-Notice the nose dimension difference.

Notice the thread form and amount of threads!

New CIP nut to left vs. some generic problem nut.
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
JoeC
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« Reply #21 on: April 05, 2012, 07:27:04 AM »

1969 Hurst shifter bolts that were on ebay

I have 2 sets these and mine have same 3/8 bolt with S B C head markings  but all 3 of the 7/16 bolts have different head markings
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68camaroz28
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« Reply #22 on: April 14, 2012, 08:45:58 PM »

Reference 68 AIM page 136 UPC 11-14 A4
68 & 69 Assembly Manuals call out one screw assy. (part # 9419301) to be used to attach the hood hinge to the hood and fender but in reality two different screw assemblies were used. The 9419301 is a 3/8-16X13/16 lg. with a 1.0 captured washer. The original cars I have looked at the 9419301 has been used for attaching the hinge to the hood but the hinge to the fender uses the same type of screw but with a 3/4" captured washer.  Special thanks to my friend Mike!  Grin
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
68camaroz28
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« Reply #23 on: April 19, 2012, 05:50:20 AM »

Motor Mount Bolt/Nut:
Page 94 of 68 AIM calls out bolt #3817224 and nut #272876.
Our originals were zinc coated and had an 'A'. The AMK kit G4650 has the same bolt with head markings and the nut is correct.

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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
JohnZ
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« Reply #24 on: April 19, 2012, 12:39:53 PM »

Motor Mount Bolt/Nut:
Page 94 of 68 AIM calls out bolt #3817224 and nut #272876.
Our originals were zinc coated and had an 'A'. The AMK kit G4650 has the same bolt with head markings and the nut is correct.

Nice - they even have the correct Marsden nut. :-)
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'69 Z/28
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68camaroz28
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« Reply #25 on: April 19, 2012, 08:48:12 PM »

I had placed this info in our Team Camaro build thread but thought it might be useful here as well.
Within the next few days the final assembly of our MO engine with start and I was getting hardware, etc. ready to go. Noticed something on the head bolts. OK, there are three different length bolts but did not remember so many different suppliers. All of the long bolts had a 'TR' symbol in the middle of the bolt head but the middle length bolts all had an 'A'. The short bolt that uses and exposes 8 in each cylinder head had a mix of 8 bolts with a 'CP', 5 with a funny looking 'O', and 3 with 'M'.


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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
IZRSSS
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« Reply #26 on: April 19, 2012, 09:03:35 PM »

Nice info Chick.

Thanks!
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1968RSZ28
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« Reply #27 on: April 19, 2012, 11:05:24 PM »

Holy Moly, twenty NOS 3846202 bolts just sold for $200.00!  That's $10.00 a bolt!

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&_trksid=p4340.l2557&rt=nc&nma=true&item=300693751645&si=rDW9M8kApe7lQNeKBTnQuuOtPWA%253D&viewitem=&sspagename=STRK%3AMEWAX%3AIT&vxp=mtr&orig_cvip=true&rt=nc

Paul
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pjbizjak
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« Reply #28 on: April 25, 2012, 12:31:54 PM »

Chic; If you need pictures of any original part let me know. My 04A build 68 z/28 is original and intact except front sheet metal has bee removed and engine & tran also.

Pete

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68camaroz28
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« Reply #29 on: April 29, 2012, 07:52:45 PM »

Chic; If you need pictures of any original part let me know. My 04A build 68 z/28 is original and intact except front sheet metal has bee removed and engine & tran also.

Pete
Thanks Pete! Good to know for sure.......

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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
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