Author Topic: Correct subframe bolts  (Read 6390 times)

HOGDADDY

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Re: Correct subframe bolts
« Reply #15 on: April 27, 2010, 03:40:11 PM »
I just double checked the 68 AIM and accordingly the "retainer" retains 1,2,3, & 8 to the CORE SUPPORT prior to assembly to the frame.
 Also, I checked core support....... it is a much bigger hole and the retainer looks like it would function correctly there. I believe it is correct afterall.

HOGDADDY

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Re: Correct subframe bolts
« Reply #16 on: April 27, 2010, 03:42:33 PM »
Hogdaddy - Good deal on the fit.  Now I'm curious to what the diameter of the bolt is.  Do you know?   Is it 5/8" or 1/2"?  

It's also clear the GM used different suppliers through the years and even during the same year as the same plant.   So long it met the bolt spec, it was probably on the approved list.    

It is 5/8" I checked.
Btw the 68 AIM shows 3 washers for the core support : SPL. (spring)washer ,P(fender washer?) washer and L (lock) washer
« Last Edit: April 27, 2010, 03:57:36 PM by HOGDADDY »

Hans L

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Re: Correct subframe bolts
« Reply #17 on: April 27, 2010, 04:03:47 PM »
Is your core support bolts also 5/8" as mine are 1/2"?  And yes, there is a spring washer for the core support.  I think mine were too weathered to save.
http://www.littooy.com/hans/
'69 Camaro RS Z/28 Van Nuys Built

HOGDADDY

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Re: Correct subframe bolts
« Reply #18 on: April 27, 2010, 04:28:31 PM »
Is your core support bolts also 5/8" as mine are 1/2"?  And yes, there is a spring washer for the core support.  I think mine were too weathered to save.

I cannot find them don't know what I did with them.

Sauron327

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Re: Correct subframe bolts
« Reply #19 on: April 27, 2010, 06:21:52 PM »
I was the first to remove my 67 bolts 23 years ago. The heads are all the same w/ integral washers and hash marks as the first post. Core supports are 1/2", S.frame are 5/8". My 68 subframe has bolts as shown in Reply#8, slide 2, Core support bolts MIA.

HOGDADDY

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Re: Correct subframe bolts
« Reply #20 on: April 30, 2010, 03:31:31 AM »
I was the first to remove my 67 bolts 23 years ago. The heads are all the same w/ integral washers and hash marks as the first post. Core supports are 1/2", S.frame are 5/8". My 68 subframe has bolts as shown in Reply#8, slide 2, Core support bolts MIA.

Are the subframe bolts on the 68 original also? If so your saying they are different than 67 or do you think G.M. used both ....bolts w/ integral washer and without on 67-69 Camaro's? Thanks in advance.

1968RallySport

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Re: Correct subframe bolts
« Reply #21 on: May 13, 2010, 01:40:27 AM »
The four rear subframe bolts on my 1968 LA car assembled the 4th week of December 1967 has the same bolts in your picture.

firstgenaddict

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Re: Correct subframe bolts
« Reply #22 on: May 13, 2010, 04:32:58 AM »
I have just encountered this mess in the last few weeks...

The 10D VIN 9N531xxx very original 1969 Z I am restoring was parked in 1973 and has the Spring washer, flat washer, and lock washer in the front two body mount positions like shown in the late 68 and early 69 assembly manual.
The change date in the 69 manual was sept...

The flat washer which rests on the bushing is heat treated/blackened steel.
The spring washer is cad or zinc.
The plating is very nice on both pieces.

The Subframe bolts are RBW w/out integrated washer.
The Core support are indented head w/integrated washer.

I will get some pics up by this weekend
James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

firstgenaddict

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Re: Correct subframe bolts
« Reply #23 on: May 14, 2010, 04:43:51 AM »
Here is the Bolt, Spring washer and Flat washer.
Undercoating was sprayed from the 9 o'clock position and must have been sprayed almost horizontally across.
The undercoating flaked off the spring washer when it was loosened but you can see the where the bolt head blocked the undercoating spray thus causing the blocked portion to be exposed to the weather and rust.





James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

firstgenaddict

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Re: Correct subframe bolts
« Reply #24 on: May 14, 2010, 04:51:54 AM »
The Left is the Reproduction the Right is the Original





TOP is Original - LOWER is Reproduction




Wonder how many restored 68's and early 69's have the right front mount components? 
James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

Hans L

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Re: Correct subframe bolts
« Reply #25 on: May 14, 2010, 02:51:59 PM »

Wonder how many restored 68's and early 69's have the right front mount components? 

This is why I've gone through the pain of restoring as many of the original bolts as possible.  I did order some reproduction suspension bolts. Though the quality was top notch, I was dissappointed with differences in head markings.
http://www.littooy.com/hans/
'69 Camaro RS Z/28 Van Nuys Built

Dave69x33

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Re: Correct subframe bolts
« Reply #26 on: May 28, 2010, 01:37:05 AM »
Attached are pictures of the bolts and washers AMK Products sells which match up with the hardware part numbers in the '69 assembly manual, page 41.  The bolts cost about $12 for a set of two, the washers $5 for a 4-piece set. 

It is very possible that more than one supplier provide hardware during for this application, just various head markings may be discovered .  It would be interesting to document the bold head markings vs. the build date of the car.

My original rubber cushions had the part number molded into the rubber.

Ref www.amkproducts.com

Good luck with your project.

Dave69x33

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Re: Correct subframe bolts
« Reply #27 on: May 28, 2010, 01:37:42 AM »
Here is the picture of the rubber cushion.

firstgenaddict

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Re: Correct subframe bolts
« Reply #28 on: July 23, 2010, 02:01:27 PM »
I have yet to find a correct set of repro cushions.
James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://plus.google.com/photos/112392262205377424364/albums?banner=pwa

68camaroz28

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Re: Correct subframe bolts
« Reply #29 on: July 28, 2010, 10:33:07 PM »
Bolts from our 68 01B NOR Camaro along with washer diameters and thickness.


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