CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
October 25, 2014, 02:54:45 PM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
105775 Posts in 12347 Topics by 4759 Members
Latest Member: RSSSFanatic
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Originality
| | |-+  Original long bolts for 1969 L/78 motor mounts
« previous next »
Pages: 1 2 3 [4]  All Print
Author Topic: Original long bolts for 1969 L/78 motor mounts  (Read 13468 times)
rszmjt
Member
***
Posts: 133


View Profile
« Reply #45 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.
Logged
JohnZ
CRG Member
*****
Posts: 4126


View Profile Email
« Reply #46 on: February 13, 2011, 11:37:32 AM »

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.
Logged

'69 Z/28
Fathom Green
CRG
rszmjt
Member
***
Posts: 133


View Profile
« Reply #47 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?)
Logged
rszmjt
Member
***
Posts: 133


View Profile
« Reply #48 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.
Logged
firstgenaddict
Hero Member
*****
Posts: 1252



View Profile WWW
« Reply #49 on: February 14, 2011, 04:26:09 PM »

Thanks Shaugs... that is exactly what I was looking for!
Now is anyone reproducing the correct EARLY style 69 HP mount?
Logged

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://picasaweb.google.com/112392262205377424364/1969_Z28_Restoration
rszmjt
Member
***
Posts: 133


View Profile
« Reply #50 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.
Logged
mark x22
Member
***
Posts: 131


View Profile
« Reply #51 on: February 26, 2011, 09:13:55 AM »

Thanks . does any one know if on a big block if the rubber mount is thinner with the bracket ?
Logged
rszmjt
Member
***
Posts: 133


View Profile
« Reply #52 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.
Logged
mark x22
Member
***
Posts: 131


View Profile
« Reply #53 on: February 26, 2011, 04:22:18 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 .
Logged
rszmjt
Member
***
Posts: 133


View Profile
« Reply #54 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.
Logged
firstgenaddict
Hero Member
*****
Posts: 1252



View Profile WWW
« Reply #55 on: March 01, 2011, 02:47:23 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? 


Logged

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://picasaweb.google.com/112392262205377424364/1969_Z28_Restoration
rszmjt
Member
***
Posts: 133


View Profile
« Reply #56 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.


Logged
Pages: 1 2 3 [4]  All Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.072 seconds with 17 queries.