jacking a lifted truck

Whats the best way to get both rear tires of a lifted truck off the ground with only a floor jack available? I need to change my leaf springs.

 

you really need some jack stands. Its not very safe to work under a vehicle without them if its going to be off the ground. I knew a guy that put concrete blocks under a car on of them broke and the car came down on him and killed him. Just trying to warn you. even with one jack it can become unstable.

 

Get some big jack stands and put them in front of the front spring hangers. To do leafs you need to droop the suspension meaning the truck must be supported by the frame.

 

Yep, tall jack stands - may be '6-ton' rating to get the height you need but that's fine, they'll be more stable anway, use the floor jack and a 6" hunk of 2x4 to raise the rear from the lowest point of the diff. (the softness of the wood will help save the jack from marring the diff housing)

 

Ive read thats Its bad to jack from the diff.

 

I used 6 ton stands and a floor jack. Lifted one side at a time and put a stand in front of the spring hangers. The move to the next side and do the same thing. Please make sure you're on level ground though. I used the floor jack under the differential to lift or lower the axle as well.

Another good idea is to lay your tires on the ground under your frame in case it comes off the stands.