Can some one please tell me the factory never offered a 74 Plymouth Scamp with small bolt pattern breaks and wheels.

Working on a buddy's car bought him some used crager SS Unibolt wheels and brand new rubber for them. Go to inspect the brakes and put new wheels on. They don't fit. My first thought wrong uni lug. Nope I went and grabed my old 64 valiant 13" steel wheel and it fits on it. What happened to this 74 car. Did the literal previous Meth-head owners swap front brakes and a rear axle on this thing?

The car has a 9" rear drum 7 1/4. Axle and the front has 10 3/4" front drums.

Is there an easy way to install 4.5" bolt patern hubs/ drum on the existing drum spindle?

This may sound dumb, but are you sure it is a '74? Have you run the vin? Salvage title? Maybe someone pirated a v8 drive train for another car and replaced with /6 stuff? How much of the vehicle history do u know?

The Vin says its a 74 but who knows with the previous owner.

All the history I was told has been wrong so who knows but now I have new wheels and tires and a car they can't fit and some extremely craps brakes for a larger body car.

I have a friend who's daily driver back 25 year ago was a 1975 Scamp 10" front drums and he replaced the 7 1/4 for an 8 3/4" (those were the days...)...14" steel dog dish specials gave way for a set of aluminum SBP rims...he eventually sold it and moved on with another brand after that.

Remember 10" front drum SBP was offered up to a manufacture date of 12-31-1975 on A-bodies...), I have seen September of 1975 Manufacture dates on a couple of early 1976 Dusters that had the 3 spd on the floor and 9" front drums factory...

since it's post 1972 and 10" front drums, you just have to swap on a set of 1973-1976 disc brake spindles and rotors (calipers and master cylinder)...bleed the brakes and it's a driver (of course changing the rear will be next...LOL)

-D.Idiot

If I did I'd be lying... Drum brake cars were small bolt pattern through the end of '75 (calendar year, not model year).

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Ok so I am not as smart as I thought. Learn something new everyday. Now I need to eat the cost of the wheels tires and tell him sorry you have to keep the crappy looking steel wheels. Unless of coarse you want to give me more money to convert to disks and rear axle. This sucks. Thanks guys.

What lbp brake set up will clear 14" wheels?

The standard A-body and F-body disc brakes....the large rotor setup from a mid-70's Cordoba or Fury can be installed on the A-body spindles (but needs the claws for the calipers from the late B-body) and would require the 15" rims to clear...so if you find a 1973-1976 A-body...14" rims were stock on their disc brake opted cars.

-D.Idiot

Ok tomorrow morning I will be pulling a 8.25 from a 73 dart to solve the bolt pattern problem for the rear. It has 10" rear drums.

We had the tires on the new wheels swapped over to the old sbp steelies in the front. Cant aford a disk swap at this time.

My question now is what size wheel cylinders do we need to run 10" drums at all 4 corners? Any changes to the master cylinder needed?