BRINGING IT ALL TOGETHER.... A's, G's & E's


4:11 Axle Question

gfleduc
gfleduc

Number of posts : 206
Location : Kingwood Texas
Age : 63
Registration date : 2015-09-19

4:11 Axle Question  Empty 4:11 Axle Question

Post by gfleduc on Mon Jul 30, 2018 8:05 am

Does anyone have an original 4:11 axle in their van? If so would you mind answering a question?

Can you say what size Delco wheel cylinders came with your axle?

Going by the GM parts book I was expecting 13/16". I ordered aftermarket cylinders & the bolt pattern does not match my backing plates. Only the 1-1/16" cylinders match up, interestingly enough that 1-1/16" is not listed for the rears?! Note I have a '65 2nd Design...
Four reference photos included below:

Reference Axle ID
4:11 Axle Question  Axle_i11


Backing plate showing bolt pattern
4:11 Axle Question  4_11_b11


Wheel cylinder bolt patterns
4:11 Axle Question  Wheel_11

GM Parts Book:
4:11 Axle Question  Pc_4_910

    Current date/time is Wed May 22, 2019 8:03 am