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104471 Posts in 12233 Topics by 4716 Members
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106  Camaro Research Group Discussion / Restoration / Re: Sway Bar End Links - Correct Finish & Bushings on: March 03, 2011, 10:26:07 PM
 Chick,

Yea, the guy I work for has some great original survivor cars, it is a great source of info, I learn something everytime I look at them.
107  Camaro Research Group Discussion / Restoration / Re: Sway Bar End Links - Correct Finish & Bushings on: March 03, 2011, 03:06:45 PM
John Z is bang on as usual!

The 6,000 mile 67 Corvette has WB2C bolts and the bushings are the small diameter ones the same size as the AMK Bushings B-10243 which show the GM part number # 381957.
 I also looked at his 70 Ram Air 4 Trans Am, 20,000 mile car, TOTALY original, it also has small diameter bushings and the WB bolts have WB only.

I have pulled off 1 of my original WB bolts, and I was surprised to find the bolt shank diameter is .342 ( 11/32") NOT 3/8" as I posted earlier. They do have 5/16 Thread on the top. The HBC bolts are the same diameter, as well as another set I have. I allways thought they were 3/8" but they are not.

The AMK small diameter bushings apprear to be correct at this time, and the hole size is smaller than 3/8 to correspond with original bolts. I also checked some Generic aftermarket link kits and they are 3/8" bolts with the larger diameter type bushings.

 Chick and Jeff - I Hope this helps.
108  Camaro Research Group Discussion / Restoration / Re: Exhaust Hangers on: March 03, 2011, 11:02:46 AM
Plain Steel unpainted as noted, at least my NOS ones are.
109  Camaro Research Group Discussion / Restoration / Re: Sway Bar End Links - Correct Finish & Bushings on: March 02, 2011, 07:11:24 PM
Jeff -

AMK also has the larger diameter bushings although in their description they show it as a shock bushing -

http://www.amkproducts.com/bulk3.asp?part=B%2D10237

This bushing below is shown as a shock or sway bar end link bushing and the GM part # 381957 is the same part number shown in my 69 AIM Assembly Book-

http://www.amkproducts.com/bulk3.asp?part=B%2D10243

I also have a set of the HBC repos and the bolts are exactly the same as my original 69 bolts, they have a WB head marking and are 3/8 shaft with smaller 5/16 thread at the top.

Can someone check their 68 AIM and see if the part number for the bushings ( 381957) and through bolt ( 8790332) is different from 69?





My 68 AIM shows the bushings to be 381957.  The through bolt is 3790332.  I assume these are both the same and your bolt # was a typo?

Not a typo, but the 8 might be a 3, the ink printing is very hard to read in my aim at that part number, so I am guessing it is a 3.

If you go onto the AMK link it shows the 381957 to be the correct bushing, I ordered some recently from AMK and they are the small diameter bushings same as HBC. Unfortunately I changed my originals back in the 70,s they are long gone so I can not say if they were big or small diameter. The bolts are original though and they are WB head marks.
 I wonder if any one has a KNOWN original car with untouched link kits and they can check the diameter of the bushings?
A friend has a very well known DOCUMENTED unmolested 6,000 original miles- 67 Corvette 427/435HP, I am going to check it out as well as his AIM for that part number. I will re post soon.
110  Camaro Research Group Discussion / Restoration / Re: Sway Bar End Links - Correct Finish & Bushings on: March 02, 2011, 10:06:57 AM
 Jeff -

AMK also has the larger diameter bushings although in their description they show it as a shock bushing -

http://www.amkproducts.com/bulk3.asp?part=B%2D10237

This bushing below is shown as a shock or sway bar end link bushing and the GM part # 381957 is the same part number shown in my 69 AIM Assembly Book-

http://www.amkproducts.com/bulk3.asp?part=B%2D10243

I also have a set of the HBC repos and the bolts are exactly the same as my original 69 bolts, they have a WB head marking and are 3/8 shaft with smaller 5/16 thread at the top.

Can someone check their 68 AIM and see if the part number for the bushings ( 381957) and through bolt ( 8790332) is different from 69?



111  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: March 01, 2011, 07:50:25 PM
"The Z28 frame brackets are different heights to compensate for the additional thickness of the antilift bracket, their difference is exactly the thickness of the bracket."

Here is my opinion on the frame stand height difference...

This, I believe, is merely a coincidence, as the retrofit was more than 2/3 of the way through 1969 production.

Why, if the safety stop was taken into consideration when the frame stands were designed, were they not installed until after 9-10 months of production? 

Hi James,

You might very well be correct, never thought about it that way. I have changed lots of engines in first gens in the last 40 years and I have never had trouble getting the engine to sit level, but I guess that is why both engine frame stands are slotted. I probably just assumed the hite difference was because of the antilift bracket, mainly because of this post. I ran a Corvette/Camaro restoration shop for 18 years (1987-2005) and I have only seen these anti lift brackets a few times, last 1 was in a 69 Corvette 350/300hp car.
 It would be interesting to know how many cars originally had them, I wonder if lots of them were removed under the engine mount recall program.
 The mystery continues.


112  Camaro Research Group Discussion / Restoration / Re: Sway Bar End Links - Correct Finish & Bushings on: February 26, 2011, 04:50:20 PM
Are all components of the front sway bar end links (bolts, nuts, washers & spacers) supposed to be silver zinc or cad?  I can't tell from my original parts.

Also, does anyone know where to get the correct end link bushings?  My original bushings are slightly taller and a different shape than the generic replacement style bushings.  These look like the correct bushings, but only appear to be available as part of a kit:
http://www.heartbeatcity.com/store/product/19683/Camaro-Sway-bar-end-link-kit--exact--67-68-69/

AMK has them, and they have the same smudge/ink ?  marks as the heartbeat ones. I just got some and they are identical. $4 for 4, you need 8 BTW.

http://www.amkproducts.com/bulk3.asp?part=B%2D10243
113  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: February 26, 2011, 04:29:22 PM
The big block frame stands are different to offset the engine to the right . I was wanting to know if the rubber mount was different on the left to allow for the anti lift bracket thickness .

Not sure on the big block mount but the small block rubber mounts I posted pictures of, are the same hite.
114  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: February 26, 2011, 02:44:10 PM
Thanks . does any one know if on a big block if the rubber mount is thinner with the bracket ?

I think Steve shows that the 396 RH frame mount is taller on page 1 of this post, I think all the engine insulators are the same physical height, the anti lift bracket thickness is equalized by the frame mounts.
115  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: February 26, 2011, 12:23:23 AM
Is the mount that uses these brackets shorter than a regular mount to allow for the thickness of the bracket , or does the engine set higher ? How thick is the bracket ?

The Z28 frame brackets are different heights to compensate for the additional thickness of the antilift bracket, their difference is exactly the thickness of the bracket. Here are some shots of my Z28 mounts with a Heartbeat Repo antilift bracket. Hope this helps.
116  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: February 13, 2011, 11:37:13 PM
paceme,

Thanks for posting, your mounts look the same as my original Z28 mounts, except mine have RBW bolts.

 I am still puzzled by the AIM  (Z28 page) and bracket shown on page 1 of this post.  The mount appears to be different, unless it is just a generic drawing, it also shows the bolt going in from the front.

Never Mind, I answered my own question tonite. I was looking in my own AIM and mine shows the bolt going from the back on the drivers side mount, there is a revision on my page.
117  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: February 13, 2011, 01:30:15 PM
paceme,

Thanks for posting, your mounts look the same as my original Z28 mounts, except mine have RBW bolts.

 I am still puzzled by the AIM  (Z28 page) and bracket shown on page 1 of this post.  The mount appears to be different, unless it is just a generic drawing, it also shows the bolt going in from the front.

If you look closely at all the engine mount illustrations and pay attention to the change dates in the title block, you'll see that ALL the engine-side mounts for L-34/35, L-48, L-78, and Z/28 were changed between 5/29/69 and 6/2/69, and the base V-8 mounts were changed on 8/6/69. Cars built before that ALL had different old-style mounts.

Thanks John, So if I am understanding correctly the mounts shown that I posted were used until 6/2/69? ( June?)
118  Camaro Research Group Discussion / Restoration / Re: 1969 Accurate Quarter Louver Location/s. on: February 12, 2011, 09:07:22 PM
 FWIW - I just put a set of GM NOS Louvers on a 02B Z28 and to my horror the drivers side hung out. Took it back off and there was a bunch of casting type flash on the back. I roloxed it down slightly and it now fits perfect.
119  Camaro Research Group Discussion / Originality / Re: Original long bolts for 1969 L/78 motor mounts on: February 12, 2011, 08:58:24 PM
paceme,

Thanks for posting, your mounts look the same as my original Z28 mounts, except mine have RBW bolts.

 I am still puzzled by the AIM  (Z28 page) and bracket shown on page 1 of this post.  The mount appears to be different, unless it is just a generic drawing, it also shows the bolt going in from the front.
120  Camaro Research Group Discussion / Originality / Re: 1969 Fuel Door Bolts.. on: February 11, 2011, 04:02:19 PM
OOPS, Just looked and they are RSC. Sorry for any Confusion.
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