I have a few questions for the 40 gurus on the forum.:
Q1- Were 40s sold from the factory (factory base specs) with a slight rear-end sag? My 76 BJ40 has slight rear-end sag, about 1.5” lower than the front snd it’s beginning to bother me a bit. I’m running 235/85R16 tires with absolutely no issues.
I’ve seen a lot of 40s that are pretty level front to rear but they’ve been typically modified with 2-2.5” lift kits, usually running 33/10.5-15 rubber.
Q2- Wondering if my truck will level nicely and give me a little more height if I install a set of front/rear 2” or 2.5” springs.? Only installing the springs as I have new (factory spec) shackles/bushings and shocks that were installed about a year ago.


Your thoughts?
Q1- Were 40s sold from the factory (factory base specs) with a slight rear-end sag? My 76 BJ40 has slight rear-end sag, about 1.5” lower than the front snd it’s beginning to bother me a bit. I’m running 235/85R16 tires with absolutely no issues.
I’ve seen a lot of 40s that are pretty level front to rear but they’ve been typically modified with 2-2.5” lift kits, usually running 33/10.5-15 rubber.
Q2- Wondering if my truck will level nicely and give me a little more height if I install a set of front/rear 2” or 2.5” springs.? Only installing the springs as I have new (factory spec) shackles/bushings and shocks that were installed about a year ago.


Your thoughts?
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