What disk brake upgrade for a 74 duster, not Wilwood

Well... the mounting of the caliper onto the stub axle is the same across the board
2 holes about 3.5 inches centre to centre for your caliper or its caliper bracket depending on vintage (same as Australia from VC-VE-CM

that leaves radial distance from the stub axle centre (rotor size) and offset of the rotor to worry about.

there is a good chance it would work and if it didn't, you'd probably be able to get a rotor combination to make it work either the subtle difference in Aussie Rotors for the last few years i.e the CM stuff with the late aluminium slider caliper and 10 inch drums at the back, compared with different offset of the the middle years VH-K, or a US rotor that could be made to fit
anything earlier is going to be 4 inch PCD if you source from Australia, regardless of if the offset or rotor size suits.


however for a 5 on 4.5 PCD hub and rotor from the US , you will find the inner hub bearing is too big for the Aussie stub axle and you would need the conversion sleeves supplied by Dr diff or some kinda none standard bearing (which you probably could find but get bearing and cone as a package)

'70 - '72 Mopar B/E-Body Disc Brake Spindle Sleaves

i.e sleeves created and sold to cater for a mismatch between B and E can be used on A body stubs and i know this because i asked DrDiff a few years back

Australia kept
small upper balljoints
small inner hub bearing
into the 4.5 inch PCD era

when in the US when they went to 4.5 inch PCD It looks like they put on a balljoint at the top with a fatter taper and a stub axle with a fatter bearing area for the inner bearing

Basically small balljoint big PCD is an Australia thing not a US thing

the 4 pot brakes were used on European imports of the barracuda in 68-69
and there is little or no difference between a stub axle off one of them, and an australian stub axle.
RHD Barracudas in the UK depended on parts from Australia and South Africa to stay on the road once US sourced RHD spares dried up.

I believe Australia was a customer for these RHD barracudas as well, i don't know about NZ , and id suspect that given that these were 68/69 cars that they would have small ball joint and small taper for the stub axle dunno what their PCD would be id suspect 4 inch

the 4 pot calipers where expensive and awkward to rebuild for many years
i think things have improved in recent years
i have never had a 4 pot caliper car, so the explanation above is based on what i know about stub axles rather than these specific calipers.

You could swap stub axle with brakes on it onto your car if you got the upper arm and balljoint as well.

however as i mentioned to the other guy its easier just to whack on a set of VJ calipers and rotors provided you buy your spares from someone who is focused on holden/ford you will avoid the Mopar tax i think the holdens used the same caliper

i usually use the bendix australia catalogue as a cross references so i can buy the pads by what holden called them... :)


Dave