Quote:
Originally Posted by chevy_mike
If you want the cheapest, easiest swap, a '71-'72 12 bolt truck rear end will be your best bet. Get the matching suspension type (i.e. coil or leaf) and it will bolt in.
If you have the ability to weld, you can get any truck 12 bolt from '73-'87 that you can cut off the brackets from and weld on the correct style for yours. That is what I did, a '73 rear end and used ECE weld on perches and set it up like the factory rear end.
One thing to note, unless you have the more rare "wide" '70 rear end, the late year '70 and '71 and later are 1.5" wider then the early rear ends. If you have wheels size and offset setup for your current one, these new rear ends will put the wheels out .75" more on each side.
Other than full size (i.e. Impala) Chevy cars, most GM cars were 5 on 4.75" lug, not the truck pattern. Ford 9" I don't believe came in a 5 on 5. Don't know about Dana 60 but I think they are 6 or 8 lug only.
Good luck.
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so a 67-70 (with the exception of the 'wide 70') is 1.5" narrower?
12 bolts or 10 bolts or both?
what are the most common gear ratios?