hahaha lo pro jack with 36's

right tool for the job?

 

I've gotta ask,

Did you get this floor jack as a gift? Or did you own it before you bought your truck?

Rolling on 36's almost always requires a special high lift jack. Figure out the radius of your tires (in your case its 18") and then add about 3" of suspension compression and you have the lift height of the jack you need to own. So you need something in the range of 21" at full height.

With 36's I would use a 10" block. Remember that your suspension will give a little. So at full height your low profile jack will provide a lift of 13 15/16". Put a 6" block and that makes about 20". An 8" block give you 22" at full lift. A 10" block will get you up to ~24" maxed out which is more than enough.

hope this helps
good luck,
ox

 

It was a gift....I'm returning it this afternoon for something higher. Thanks a ton!

 

No worries.

glad to help

ox.

 

I don't know if it's me, but having a 10" block in between my jack and the truck seems dangerous, right?

 

Not the ideal setup, you're right. Much better if you were to trade in for a jack that fits your needs on your truck. Or keep that one for your wife's car and buy another for yourself.

You could do what 89Lariat suggested and create a cribbing to jack your truck up with your low profile jack. Essentially taking several pieces of lumber and fastening them together until they are the desired height but that will still be about 10 inches or so.

That said I would still like to see you get a floor jack that, by itself, extends high enough to do the job without aid of wood blocks.

ox

 

The only jack I'll put on wood blocks is a bottle jack.

 

Yeah, floor jacks will crawl a bit as you raise or lower it, so unless you have a very large foot print of boards on the ground, I'd not go that route, unless absolutely necessary...

I've got the 3 ton "SUV" jack and stands from Craftsman (Sears). It just barely gets the front end off the ground with stock 4x4 suspension and 31" tires...

Rear end is no problem... I usually jack up on the center of the front cross member to raise the whole front end and then put the jack stands at the ends of the cross member.

If you are also going to be lifting the rear end, do it first, and then do the front.. Or else you'll find your tires touching the ground up front again... (I do that when I rotate the tires.. It's just easier to get all four tires off the ground and zip around with the impact gun...)

Mitch