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Differential options for '70 Challenger?

Dusterkrazy

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Me and dad recently bought a '70 Challenger. Just a 318/904. Unfortunately, it only has the 7.25 rear in it. Engine will be upgraded/replaced but it won't be a drag car or anything serious. What rear ends will work?

E body 8.75 rears are nowhere to be found here. A buddy has a '65 Dodge c-body rear for really cheap which fits my style...again (cheap). Would this be a good option?
 

jeffv21

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Try craigslist in metro detroit area. There is a guy in Howell taht has a number of axles.
 

challenger6pak

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Until recently I never used C body rear in a Challenger. Recently I have because it is longer than the Ebody unit and newer style offset wheels fit better. The perches (mounts) will need to be moved on the c rear housing to fit it onto the Challenger springs. Unless you are planning to run new style wheels, stick with an E or pre 72 B rear end. The B rear will give you more clearance for the older style wheels. The perches need to be moved on the B rear end housing. Since you keep using the word cheap, go with a 8.75 Ebody rear. I have 12 of them here. I am in Florida.
 

70CUDA4SPEED

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1965 C-body is close to exact same as E-body, difference is like 1/8" and brackets are same 46", just go for it!!
 

Dusterkrazy

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I may go for it. He said $50 for the '65 C body unit. I can't buy an E body rear for that anywhere that I know of. The C body unit is all there.

I do have the housing and axles to a '70 Charger. I don't know close the B body rear is to the E. No chunk though...
 

70CUDA4SPEED

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Difference between 68-70 B-body and E-body is 1 1/2" shorter and pearches are 44", can be used with a relocation kit from Cass doctordiff.
 

Adam

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From the web: Housing widths, flange to flange

A BODY
'66-'72= 52 5/8"

B BODY
'62-'63= 53 1/4" (And '64 Max Wedge)
'64 = 55 5/8" (Exc. Max Wedge)
'65-'67= 54 1/4"
'68-'70= 54 15/16"
'71-'74= 57 7/8"
'71-'73 wagon= 59 7/16"

C BODY
'65-'69= 56 3/4"
'70-'71= 57 7/8" (Chrysler & Fury)
'70-'74= 59 7/16" (and '69 wagon)

IMPERIAL
'65-'66= 57"
'67-'69= 57 3/8"
'70-'71= 54 3/4"
'72-'73= 59 5/8"

E BODY
'70-'74= 56 31/64"
 
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