How do you change over to a 4.50" bolt pattern from a 4.25" on a 75 Plymouth Scamp? What front brake rotors will work? Which axles can I use in the 8.25" rear end? Help

 

use 73-76 a body disc brakes

 

Scamp is an A body. Didn't they have the 4.5" already in 1975
The small bolt pattern was 4" not 4.25

 

The V8 cars came with the 4.5, dunno about the later /6 cars tho...

j

 

small bolt pattern (sbp) is 5x4 and large (lbp) is 5x4.5

 

i assume it curenntly has drums

 

I do have factory disc brakes on the front, and they DO measure 4.25 on 5 bolt pattern. I thought Mopar only had 4" or 4.50" bolt patterns, with the older A bodies having the 4" pattern.

 

No factory front disc brakes

 

I do have factory disc brakes on the front, and they DO measure 4.25 on 5 bolt pattern. I thought Mopar only had 4" or 4.50" bolt patterns, with the older A bodies having the 4" pattern.

I do have factory disc brakes on the front, and they DO measure 4.25 on 5 bolt pattern. I thought Mopar only had 4" or 4.50" bolt patterns, with the older A bodies having the 4" pattern

 

Get you some F-Body or M-Body front spindles and calipers. Some 8 1/4" axles off the same cars. They are all the big 4.5".

 

he isnt measuring correctly

 

Another way ! The 4' pattern used 7/16 studs The 4.5 uses the standard 1/2" stud..
Unless someone has put some old junk on your car it already has the 4.5 pattern

 

The studs are 1/2" x 20 and I do know how to measure.

 

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