COPO 9511

[PeteLeathersac]

Fixing my own mistakes again, the part #'s I posted above for the <span style="text-decoration: underline">non</span> Copo 9560/9561/9562 cars w/ Copo-9511 4:88 ring/pinion are incorrect..
We still need these #'s!.

Again the ring/pinion #'s 3862528/3862516 are the HD parts supplied w/ an original '69 9560/9561 car ordered w/ 4:88's factory installed in their BE stamped tube rear axle carriers..
Also again maybe the same part #'s supplied w/ a KQ stamped rear in a 1969 Copo-9562 A-body ('69 L72 Copo Chevelle) ordered w/ 4:88's as Copo-9511?.

The above #'s make the BE w/ ring/pinion #'s 3862528/3862516 that Beater68427 found in his '68 more interesting?.
4:88 HD ring/pinion components added to a BE shipped w/ factory 4:10's or could it be a whole assy from a Copo-9560 or 9561 '69 Camaro w/ Copo-9511 shipped w/ 4:88's?.

https://www.yenko.net/ubbthreads/ubbt...147&amp;page=3


[img]<<GRAEMLIN_URL>>/hmmm.gif[/img]
~ Pete

[PeteLeathersac]

Peeling back more layers of the 1969 Copo-9511 onion, check out this '69 in the below links.. (Link title suggests a '68 but the car a '69)
Sure the deck job can't help but make a fella suspect the originality of the L89 claims but if the BW stamping is genuine it's a '69 Copo-9511 car!.
If so it's a more rare car than an L89 anyway but especially so being this BW 4:56 is also a JL8!.

http://www.collectormotors.com/1968L89.htm

http://www.collectormotors.com/L89/27.jpg

What's anyone think?.
[img]<<GRAEMLIN_URL>>/hmmm.gif[/img]
~ Pete

[69L72RS]

Here are a few clarifications. Sorry, I was in a hurry when posting earlier.

The &quot;9511CB = 4.88 (3862528-3862516)&quot; is from a Z28 not a L72 Camaro.
The 3862528-3862516 set is the standard duty gearset for a BX coded rear.
To the best of my knowledge the 4.88 was not able to be ordered with the L72 cars under any code.

The HD 4.88 gears were over the counter only (3916232-3916233)as
part 3917972.

The 9511DT code is from a factory ordered L72 Camaro with 4.56 gears [(3916230-3916231)set number 3917973].

Also, the &quot;BW&quot; axle cars that I have had in the past were rear drum brake cars.
The 4.56 ratio JL8 axles that I had were all &quot;QZ&quot; coded.
The rear that is pictured doesn't look like any JL8 that I have ever had.

[PeteLeathersac]

Thanks again Julian for your input also the clarification!.
Not today but I'll pick up and make changes to the last postings that reflect your information supplied..
Please check back and make any notes you see fit..

Again I'm far from an expert on this 1969 Copo-9511 subject but hope we can all learn some solid facts that can be applied to any cars we may find..
1969 Copo-9511 A/F/X body cars also 'Vettes were built so lets find some!.
The previously posted link to the '69 NOM L78 Chevelle w/ KM rear axle tube and POP looks the most promising so far!.

[img]<<GRAEMLIN_URL>>/beers.gif[/img]
~ Pete

[67L78conv]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PeteLeathersac</div><div class="ubbcode-body">The info posted above including this link noted below all indicate G84 was req'd w/ a '69 Copo 9511 order, not G80?.
http://www.camaros.org/pdf/options.pdf

[img]<<GRAEMLIN_URL>>/beers.gif[/img]
~ Pete </div></div>

As I understand it which may be revised, the COPO 9511 is an override of the G84 4.10 gear set replacing it instead with the 4.56 or 4.88 (have not seen mention of any other gears as of yet). This option (COPO 9511) according to the note is available only when ordered with a posi rear which is G80 $40.00 and the gears cost the same $2.15 as the 4.10's making it $42.15.

In a nutshell to get a 4.56/4.88 you needed to order RPO G84 along with RPO G80 and then override the gear set by adding the COPO 9511 to replace the gear set, final price is still the same as ordering a regular old 4.10 posi at $42.15.

I know I have more on this but need to keep digging, I have gone through a good 8 feet of stacked papers so far so I will keep trying. This is the prime reason I had started my scan everything and post it campaign on my site so we can find info in seconds not days or weeks. Still a long way to go though on that one.

[PeteLeathersac]

The way I understand it was ordering G84 w/ Copo-9511 automatically included the G80 being 9511 was a Posi only option, not available peg-leg?.
We really need to find some 1969 Copo-9511 window stickers!.
They're supposed to exist and hopefully can answer these and other questions?.
And again too, lets find some '69 Copo-9511 cars!.


[img]<<GRAEMLIN_URL>>/beers.gif[/img]
~ Pete

[John Brown]

So, would these be the right gears for a 9511 4.88 rear end?

http://cgi.ebay.com/ebaymotors/12-bolt-4...sQ5fAccessories

[69L72RS]

John

From what I have seen, the set on ebay has never turned up in a 9511 ordered rear. That doesn't mean that it isn't out there somewhere.

All of the 4.88 geared rears that I have seen were built with the 3862528-3862516 ring and pinion sets and have matching 4.88 axle coded stamps on the housing. None of these cars have been L72 cars.

I have only seen the set that is on ebay, listed in HD OTC parts books.

[YENKO DEUCE REGISTRY]

Here is a pic of one of the Yenko Bulletins describing a new '69 Yenko Nova with the 4.10 gear:

[SS427]

$3150 for a 69 427 Yenko Nova. Gee, I will have to give that some thought. The economy is in a downward spiral you know...... [img]<<GRAEMLIN_URL>>/rolleyes.gif[/img]