52” Pro Comp Springs

[Rory]

Has anyone used Pro Comp 13311 springs on their early Wag? Supposed to be a 52” spring for GM applications but I’m thinking with the right bushings it should work on the early post mount rigs…

[Harry Dawg]

Hi Rory.
Did you end up using the 52" GM springs? I am looking for a lift solution for my 69' J3000.

[Rory]

I did. Changed out the bushings to fit the front post and rear shackle. Worked out pretty good. See before and after below.


The front is SOA with a stock height spring for a 68-72 Suburban, rear is 4" lift for the same application. Before pic is with 31" tires, after is with 33".

[Phils67]

I used 52" GM springs with Ford ranger shackle brackets on both ends of the rear springs in my early J-truck and eliminated the post mount suspension, as that's what i assume you have. Works phenomenal. Measurements may be different as far as placement on a Wag though vs. a truck. But the concept is the same. https://www.fsjnetwork.com/forum/viewto ... 12&t=18528