Posted By: DaveDudek
Dana the same for E and 71 B body? - 11/05/14 10:41 PM
Will a Dana from a 71 Charger fit in a 70 Challenger with no modification's?
Dana the same for E and 71 B body?
Posted By: Mopucky
Re: Dana the same for E and 71 B body? - 11/05/14 10:44 PM
E body perch to perch is 46"
71 B body is 47.3"
71 B body is 47.3"
Posted By: DaveDudek
Re: Dana the same for E and 71 B body? - 11/05/14 10:52 PM
Thanks! Sounds like it's doable.
Posted By: jt4406
Re: Dana the same for E and 71 B body? - 11/05/14 11:39 PM
Dave:
Here's some info I have saved on my computer concerning dana dimensions:
'71-'72 B-body 57 7/8" housing, 63" axle flange to flange, 47.3" perch, 35 spline track-lock sure-grip, 7290 yoke
'70 E-body 56 31/64" housing, 61 5/8" axle flange to flange, 46" perch, 35 spline power-lock sure-grip, 7290 yoke
Can't say if it is 100% accurate, but if it is your differential will be an inch and 3/8 wider than stock.
Jess
Here's some info I have saved on my computer concerning dana dimensions:
'71-'72 B-body 57 7/8" housing, 63" axle flange to flange, 47.3" perch, 35 spline track-lock sure-grip, 7290 yoke
'70 E-body 56 31/64" housing, 61 5/8" axle flange to flange, 46" perch, 35 spline power-lock sure-grip, 7290 yoke
Can't say if it is 100% accurate, but if it is your differential will be an inch and 3/8 wider than stock.
Jess
Posted By: scatpacktom
Re: Dana the same for E and 71 B body? - 11/05/14 11:44 PM
You want to put a early B body rear in it and that way when you put the boots on you have more room. Buy the hangers and they bolt right in
Posted By: jt4406
Re: Dana the same for E and 71 B body? - 11/06/14 12:03 AM
Quote:
You want to put a early B body rear in it
Along those lines......
'66 B-body 54 1/4" housing, 59 3/8" axle flange to flange, 44" perch 23 spline power-lock sure-grip, 1330 U-bolt yoke
'67 B-body 54 1/4" housing, 59 3/8" axle flange to flange, 44" perch 23 spline power-lock sure-grip, 1330 strap yoke
'68-'69 B-body 54 15/16" housing, 60 1/16" axle flange to flange, 44" perch, 23 spline power-lock sure-grip, 7290 yoke
'70 B-body 54 15/16" housing, 60 1/16" axle flange to flange, 44" perch, 35 spline power-lock sure-grip, 7290 yoke
By the way, I think I got these dimensions from Dr. Diff's website.
Jess
Posted By: DaveDudek
Re: Dana the same for E and 71 B body? - 11/06/14 12:19 AM
Okay, so a 70 E-body and a 71 B-body is not a quicky swap. thanks!
thanks!
Posted By: Stewpar
Re: Dana the same for E and 71 B body? - 11/06/14 12:28 AM
71 B-body Dana's are quite hard to find and worth more to the right buyer, so don't cut it! 
Posted By: smokkem
Re: Dana the same for E and 71 B body? - 11/18/14 10:03 PM
I put a 1970 B body Dana in my 71 Cuda, the B body Dana is basically 1" narrower on each side than an E body Dana. Take all your measurements, including degrees and locations of the spring perches, carefully cut/grind of the perch welds and relocate the perches on the axle housing to match the E body location. I used Hemi springs and put on a stock sway bar set up, works and looks perfect. Check with Dr Diff-- www.doctordiff.com for other options using special brackets. 