E body rear end in a B body?

[BB1]

I heard back in the 80's that swapping out a B-body rear end for a E-body one would allow for a bigger tire and rim, is this true.

[BB1]

Anyone anyone... 

[John_Kunkel]

Depends on the year of the B body, in many years the E body rear end is wider than the B body.

Rear end widths, drum-to-drum:

B BODY
'62-'63= 58 1/2" (And '64 Max Wedge)
'64    = 60 7/8" (Exc.Max Wedge)
'65-'67= 59 1/2"
'68-'70= 60 1/8"
'71-'74= 63"
'71-'73 wagon= 64 3/8"

E BODY
'70-'74= 61 5/8"

The size of the wheel wells is the restricting factor in tire fit, the wheel backspacing can compensate for most rear end widths.

[BB1]

Yeah, I thought so; I got it backwards.

Thanks John