Poll
Question:
What 4 speed transmission and rear axle ratio came from the factory in your 1969 Z/28?
Option 1: M20 with std 3.73 rear axle ratio
votes: 9
Option 2: M21 with std 3.73 rear axle ratio
votes: 11
Option 3: M22 with std 3.73 rear axle ratio
votes: 2
Option 4: M20 with economy 3.55 rear axle ratio
votes: 0
Option 5: M21 with economy 3.55 rear axle ratio
votes: 1
Option 6: M22 with economy 3.55 rear axle ratio
votes: 0
Option 7: M20 with performance 4.10 rear axle ratio
votes: 2
Option 8: M21 with performance 4.10 rear axle ratio
votes: 11
Option 9: M22 with performance 4.10 rear axle ratio
votes: 1
Option 10: M20 with special rear axle ratio
votes: 0
Option 11: M21 with special rear axle ratio
votes: 0
Option 12: M22 with special rear axle ratio
votes: 0
If you have or had an original 1969 Z/28 and know the transmission type and axle ratio please answer.
The 3.73:1 rear axle was the ratio you got unless something else was checked on the order form.
The other axle options were economy, performance, and special where you specified in the ratio.
BE or BV or QY is 4.10 ratio.
I voted "4.11 rear" since it's the closest one, and I have a BV code with a M21.
Not interested in open or posi rear?
Quote from: DavidS on November 27, 2013, 11:01:35 PM
BE or BV or QY is 4.10 ratio.
I voted "4.11 rear" since it's the closest one, and I have a BV code with a M21.
Not quite sure what you mean. 4.11 is not an option from the factory or in the poll.
Quote from: ZLP955 on November 28, 2013, 02:44:46 AM
Not interested in open or posi rear?
Not for this purpose. I suspect the percentage of posi units is high due to Chevy recommending it with the 3.73 and requiring it with the 4.10 and above.
Quote from: 68 Ragtop on November 28, 2013, 03:39:01 PM
Quote from: DavidS on November 27, 2013, 11:01:35 PM
BE or BV or QY is 4.10 ratio.
I voted "4.11 rear" since it's the closest one, and I have a BV code with a M21.
Not quite sure what you mean. 4.11 is not an option from the factory or in the poll.
Thanks for fixing it. Google's cache shows it before the fix: http://webcache.googleusercontent.com/search?q=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&rlz=1C1BLWB_enUS541US562&oq=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&aqs=chrome..69i57j69i58.6788j0j4&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8 (http://webcache.googleusercontent.com/search?q=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&rlz=1C1BLWB_enUS541US562&oq=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&aqs=chrome..69i57j69i58.6788j0j4&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8)
Quote from: DavidS on November 28, 2013, 10:51:40 PM
Quote from: 68 Ragtop on November 28, 2013, 03:39:01 PM
Quote from: DavidS on November 27, 2013, 11:01:35 PM
BE or BV or QY is 4.10 ratio.
I voted "4.11 rear" since it's the closest one, and I have a BV code with a M21.
Not quite sure what you mean. 4.11 is not an option from the factory or in the poll.
Thanks for fixing it. Google's cache shows it before the fix: http://webcache.googleusercontent.com/search?q=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&rlz=1C1BLWB_enUS541US562&oq=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&aqs=chrome..69i57j69i58.6788j0j4&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8 (http://webcache.googleusercontent.com/search?q=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&rlz=1C1BLWB_enUS541US562&oq=cache%3Ahttp%3A%2F%2Fwww.camaros.org%2Fforum%2Findex.php%3Ftopic%3D11532.0&aqs=chrome..69i57j69i58.6788j0j4&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8)
So who fixed it, if not the OP ???
I fixed it. Sorry for the confusion.
Thanks Kurt. I forget sometimes there is a small difference between 10 and 12 bolt ratios like 3.08/3.07 and 4.11/4.10.
BTW if you have a special ratio feel free to post it. The poll would get way to complicated if I tried to include all possibilities.