I was talking to a buddy today and he said that he thought the 1969-1/2 six pack Runners and Bee's only got the Dana with the stick car but I thought all 1969-1/2 six pack 440 cars got the Dana with a 4.10 gear which was in both the auto and stick.
And we both thought that 3.91 was the largest gear number size you could get in the 8-3/4 even in the B-body ? I know the A-body offered the 3.91 as the tallest gear in the 8-3/4 but I cant remember for sure if that was the same in the B-body.
Can anyone shed any light on what is correct and thanks. Ron

Ron, looked in the 69 parts book and only saw 3.91 as the tallest gear for 8 3/4. 9 3/4 showed a 3.54 gear

1970/71 book showed 4.10 in both the 8 3/4 and 9 3/4. There was a notation on the illustration page saying: 9 3/4 with manual transmission with 426 440 engines in cuda challenger and B body with sure grip(1971)

According to this Hotrod Magazine article, ALL 1969 1/2 A12 Roadrunners (6bbl), wether Automatic or Manual Transmission, received the Dana 60:

http://www.hotrod.com/cars/featured/mopp-0902-1969-m-code-a12-road-runner/

All 69.5 A12's were Dana 60 with 4.10 , 4 speed or auto.

I'm to lazy to look up when the Super Track pack started but if you got an Automatic with Super Track Pack it would have been an 8 3/4 with a 4.10 , not sure if that started in 69 , but it was like that in 70-71

Thanks for the replies and info. Ron

Super track pack and super performance axle package included a 4.10 geared DANA 60 rear for cars equipped with a 4 speed OR automatic transmission.

As far as I know, 4.10 gears were never installed in an 8.75" passenger car rearend by the factory during the muscle car years. I'm not sure about the late '50s/early '60s, however.

Ive never seen anything that suggested a 4.10 came in the 8.75.

4.10's were Available in '58.

4.10s were available in 4x4 trucks with the 8.75 axle. Perhaps they could have been ordered in cars as well.

3.91's were the lowest 8 3/4 gear offered beginning in 1969. exception would have been 62-64 max wedge/super stock.

The first replacement rear-end for my '71 Charger (in 1977) was drum-to-drum, 4.10 Trak-Lok out of a Dodge Pickup. The Spring mount pads needed to be redone to fit, but other than that, the outside width was correct.

Eventually, I swapped in a Dana 60 (also with 4.10 gears).

My 69 GTX came with the super trac-pack. It was automatic, with 4.10 Dana.