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104635 Posts in 12242 Topics by 4719 Members
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16  Camaro Research Group Discussion / Research Topics & Reports / Re: Original 67-69 Camaro driveshafts - information requested about your car on: September 19, 2011, 11:53:12 AM
Ok, got my drive shaft out and can report some preliminaries.
Yokes are in-line.
Centers are 49.95"
Bolted straps on diff yoke.
Engine, trans and build as per my sig.

Hi Bryon, sorry for my absence. More info to report.
Have found the orange paint stripe on mine @ 12" approx from the transmission yoke center and what appears to be the green stripe a bit further down - more cleaning needed for that one.


17  Camaro Research Group Discussion / Restoration / Re: Media blasting gears on: July 16, 2011, 10:30:51 AM
Hi Bob,

Yes, I left the media question open as possible downsides may vary with media.
My main concern was with the disruption to the surface treatment of the teeth leading to premature wear and hence whining, or to even cause the teeth to whine more than they would otherwise.

Also, the possible embedding of particles of media in the surface of the gear leading to premature wear of not just the teeth, but the whole gearbox.
Heavy mineral media like garnet is terribly abrasive, even in it's finest powder form.

Certainly you would want to stay clear of bearing surfaces were needle rollers run.

The reason for asking this is because my nephew is building up a box which needs a cluster gear and also had concerns about the ebay offerings.

btw, Rob - not Ron  Smiley
18  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 15, 2011, 11:59:37 AM
Yeah they're a pretty tuff shaft! I've asked my motor to exercise some authority at times   Cool
19  Camaro Research Group Discussion / Restoration / Media blasting gears on: July 15, 2011, 10:14:43 AM
I note some cluster gears on ebay that have been fully blasted, teeth and all.
I'm not sure that this is a wise thing to do, for a few reasons.
Your thoughts appreciated.
20  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 15, 2011, 03:00:26 AM
Thanks Charley for another data point and the great pics of the color bands!!  Smiley
I also note the green on the trans yoke of which there is a hint of that on mine too.
So far we have:

68 models
12C - pins
02E - pins

69 models
05C - clips
21  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 14, 2011, 04:39:21 AM
Going by the P&A, all 67 Turbo 400's came with the Saginaw drive shaft (nylon injection), and all 69 Turbo 400's came with the Dana drive shaft (clips). Only the 68 Turbo 400 had two versions. Go figure!

Ed

Ok, so this suggests a change in design/supplier during the 68 model rather than two different suppliers.
I take it that all non-T400 67 - 69 shafts were dana's?
If that's the case, then it would also suggest that inititally, only saginaw were tooled up to make the longer yokes for the T400 and sometime during the 68 model, dana tooled up to make the yokes as well?
22  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 13, 2011, 11:57:03 AM
Do you happen to know what 'Big Iron' Bob's build date is?

Ed

Funny you should mention that, I just pm'ed him to drop by with that info  Smiley
23  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 13, 2011, 11:39:57 AM
My build is 12C.
24  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 13, 2011, 11:13:51 AM
Cheers John, that's one book I don't have as yet. Does it describe a method of pressing the old joint apart?

Ed, I take it from what you say that sometime during the production of the 68 model, there was a switch from injected saginaws to clipped dana's?
25  Camaro Research Group Discussion / Originality / Universal joint retention - metal clips and plastic injection on: July 13, 2011, 07:53:46 AM
I thought this topic worthy of it's own research thread as there seems to be very little info on plastic pin injection and the 1st gen Camaro.
At first I wasn't sure about my drive shaft, but after 'Big Iron' Bob mentioned that he has a known original 68 BB/TH400 shaft [he bought the car new] with the same plastic injection, I suddenly have lots of questions surrounding the topic.

All the pics that others have contributed so far in the driveshaft thread http://www.camaros.org/forum/index.php?topic=7861.0 are all sb shafts with outboard snap rings.
So, when did GM use plastic injection and was there some design criteria that required it, or was it purely economics?
If economics, why [seemingly] only BB's?
And then:
Was it only BB/TH400 cars?
Was it all 1st gen BB's

Research I've done so far suggests that ony GM did this and it's not just a 'pin' of plastic, but that there is a groove in the trunnion caps and matching grooves in the yokes. Plastic is then injected through the holes to fill the grooves.

It seems they are quite tough to get apart. The common removal method I've seen so far is to heat the yoke with a propane torch to melt the plastic as per this youtube video  http://www.youtube.com/watch?v=YZZUjzNCPF0 which seems a bit harsh!

This site http://arrc.epnet.com/autoapp/8844/8844R07_U_JOINT_REPLACEMEN1.htm shows using a cross press arm pressing onto the spider [fig 4.] to sheer out one side at a time.
This not only avoids heating anything, but would maintain an aspect of originality as the 'pins' are left intact  Smiley

All input warmly appreciated  Smiley
A couple of pics of what mine looks like



26  Camaro Research Group Discussion / Research Topics & Reports / Re: Original 67-69 Camaro driveshafts - information requested about your car on: July 07, 2011, 05:06:56 AM
Excellent, thanks Bob, I'm v. happy now! Smiley
Bryon, will post more details and pics this weekend. It's winter here [Au.] , freezing cold and gets dark early.
I just can't get home quick enough atm to do much.
27  Camaro Research Group Discussion / Research Topics & Reports / Re: Original 67-69 Camaro driveshafts - information requested about your car on: July 06, 2011, 01:02:39 PM
Have an original 68 BB SS/RS drive shaft with original injected u-joints
Yokes are in-line.
Centers are 50".
Bolt straps on diff. yoke.
No visible paint strips but would like to clean to see if there are any.
What are you cleaning your driveshafts with and will it affect my original  joints?
Bob
Wow, yours is pin injected as well !!! Are the pins orange in color?
Maybe mine is original after all and still with the factory u-joints.
I haven't noticed any stripes on mine as yet either, but I do have to clean off a thin layer of flat black which I had sprayed over the front half of the shaft many years ago.

Bob, do you know if that shaft was from a TH400 BB car?
28  Camaro Research Group Discussion / Research Topics & Reports / Re: Original 67-69 Camaro driveshafts - information requested about your car on: July 06, 2011, 11:22:33 AM
Ok, got my drive shaft out and can report some preliminaries.
Yokes are in-line.
Centers are 49.95"
Bolted straps on diff yoke.
But....seemingly not original as the u-joints are pinned, not 'C' clipped or snap ringed??
But....pins are OEM only?, replacement uni's  are furnished with 'C' clips? If so, then where the heck did this shaft come from??
29  Camaro Research Group Discussion / Research Topics & Reports / Re: Original 67-69 Camaro driveshafts - information requested about your car on: July 04, 2011, 01:35:27 PM
Will crawl under mine [396/TH400] and report back soon
30  Camaro Research Group Discussion / Originality / Re: LSD diff tag on: July 04, 2011, 01:06:20 PM
Wow, one of my first questions on this forum dug up from a dark, dusty corner  Smiley
Thanks for reviving it and the answers guys!
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