Depends on the use but bigger is always better. A 12 bolt is the best for racing and is the strongest but a 8.5" 10 bolt will just about hold up as well.
Get a heavier duty rearend. the tow capacity is based on the rearend. Chevy 10, 12, and 14 bolt rearend.
8.5 inch 10 bolt.
In 69 you could get whatever you wanted, a lot of impalas had the 12 bolt rearend and some had the 8.5 10 bolt rearend.
It's definitely a 10 bolt rear end and could be a 7.5 or 8.2".
No, a 2001 Chevrolet S-10 rear end will not work on a 1991 Chevrolet S-10.
The 12 bolt is GM's strongest rear end and the 8.5" 10 bolt is also a great rear end that will hold up fine.
a 10 bolt rear posi was an option as well as ratio 3.73 was performance option
no
Yes it should
Chevy 10 bolt rear
5×5
Yes- the bolt pattern is the same.