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  #31  
Old 11-08-2021, 09:26 PM
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Cool discussion. Lance, wouldn't they all have been ordered with 4.10s?
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Old 11-09-2021, 01:30 PM
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Cool discussion. Lance, wouldn't they all have been ordered with 4.10s?
4:10s was a G84 option and only 10 of the 30 Chevelles into Canada show it in their individual data, including 1 I ordered at Belmont. Other than that I don't recall what the standard issue rear gear was. I will check further, though, and see what I can come up with

Last edited by midyr; 11-09-2021 at 01:31 PM. Reason: typo correction on the option
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  #33  
Old 11-09-2021, 05:54 PM
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Quote:
Originally Posted by midyr View Post
4:10s was a G84 option and only 10 of the 30 Chevelles into Canada show it in their individual data, including 1 I ordered at Belmont. Other than that I don't recall what the standard issue rear gear was. I will check further, though, and see what I can come up with
Dave Mackay, my bud at Belmont that handled customers and paperwork, says 4:10s were indeed standard.
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  #34  
Old 11-09-2021, 06:30 PM
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Were any Canadian cars Copo 9511 as req'd for '69 w/ factory 4:56 or 4:88 rears?
Great stuff Lance, thanks for sharing!

~ Pete

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Old 11-10-2021, 01:21 AM
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My car had ZQ9 REAR AXLE PERFORMANCE PACKAGE on the GM sheet from George , but
I’ve never been able to find any GM info on that. Just assumed it was the 4.10, but if anybody has info on that ???? That would be great..
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  #36  
Old 11-11-2021, 05:04 AM
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ZQ9 - ordering code for Performance Axle Ratio (powertrain dependent, see powertrain charts).
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Old 11-11-2021, 03:15 PM
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Thx Kurt , rats I still can’t seem to find anything , but the car is a 69 Chevelle and drivetrain is L78, M21 close ratio .
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  #38  
Old 11-11-2021, 04:55 PM
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Quote:
Originally Posted by PeteLeathersac View Post
'

Were any Canadian cars Copo 9511 as req'd for '69 w/ factory 4:56 or 4:88 rears?
Great stuff Lance, thanks for sharing!

~ Pete

.
None of the data on the 70 COPO Camaros into Canada indicate anything but the standard 4:10, including the 1 ZL1, although I expect there were some with optional rear gears on either side of the 4:10s; I believe 4:88s were only over-the-counter, not assembly line available. It is entirely likely GM simply didn't bother entering the gear option on the microfiche reports. On the other hand they did frequently on Corvettes, so go figure.
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