8.75 Rear Brakes Question

[RichardR]

Hi,

I have a 71 Scamp and will be replacing the 7.25 rear with a 8.75 one. I sourced a 67 B body housing and comes with axles but no brake hardware. I'm seeing a lot of conflicting info and I'm getting confused.

What I know for sure:
-7.25 SBP back plates and 8.75 back plates differ
-drums would differ due to bolt pattern

What I'm confused about:
- will the guts still work?



Thanks

 

[440DART1970]

Nope the internals won't work either. 8.75. Rear can have either have 10 x 2.5 drums or 11 x 2.5 drums or even rotors

 

[pomonamissel]

the 8 3/4 axles stick out of the housing more than the 7 1/4 , 8 3/4 should use a shorter driveline also , u-bolts and shock plates . just stay with matching componets , you can even disc the rear with jeep stuff . cut it to what tire and rim combo . brakes are outthere .

 

[451Cuda]

'67 B body housing will be wide for a Scamp unless you're planning to use modern positive offset wheels.

 

[RichardR]

I looked at enough threads to see that just moving perches will make it work but it will be tight. And the 67 is ever so slightly narrower

 

[451Cuda]

I looked at enough threads to see that just moving perches will make it work but it will be tight. And the 67 is ever so slightly narrower

For Dusters, Demons, Dart Sports...the Swinger and Scamp have less room in wheelwells.

 

[RichardR]

I know. Still works, but tight. Can get them shortened. A body versions next to impossible to find, especially in canada.

 

[Jimacuda]

pretty much any 65-up rear wheel drive large bolt pattern rear brake assemblies will fit on your 8.75.
stay away from the small bolt brake parts, they dont interchange.
I've sold a dozen sets of 76-89 F and M body 10x2.5 rear brakes for the upgrade from small bolt with new axles.
even used a set or two myself

 

[RichardR]

Good to know thanks