Cool discussion. Lance, wouldn't they all have been ordered with 4.10s?
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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! :beers: ~ Pete . |
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.. |
ZQ9 - ordering code for Performance Axle Ratio (powertrain dependent, see powertrain charts).
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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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