FlatheadTech

Identify Rear Axle Housings

Identify Axle Housings


There are 7 basic styles of axle housings. #1) 1928-1931 'A'. The bell is 9 3/4" diameter. The spring perches are on top of the axle tubes near the backing plate mounting flange. #2) 1932 ('A' style). The bell is 9 3/4" diameter and the length is 24 1/8" from housing gasket to backing plate flange. The spring perches are attached to the backing plate flange. The radius rod tabs are straight. #3) 1932 (V8 style) and 1933-1934. The bell is 10" diameter and the length is 24 1/8 from flange to flange. The spring perch is attached to the backing plate flange and is shaped like the '32 'A' style. The radius rod tabs are mounted on an angle. #4) 1935-36. The bell is 10" diameter and the length is 24 5/8" flange to flange. There are no spring perches. The spring was mounted on the radius rods. These housings have an oval flange to which the radius rods mounted. #5) 1937-40. The bell is 10" diameter and the length is 24 5/8" flange to flange. The spring hangers are attached to the backing plate/housing end. #6) 1941. The bell is 10" diameter and the length is 24 5/8" flange to flange. The 1941 housings have a small triangle shaped "nub" by the spring shackle hole, and a stud on the passenger side spring hanger for the pan hard rod . #7) 1942-1948. The bell is 10" diameter and the length is 25 1/2" flange to flange. These have an extra stud on the spring perch for the pan hard rod.