2003 4.7. Right rear was sagging about and inch, so I put new springs on along with new shocks, and it's still sagging. Any ideas?

 

shocks have zero effect on ride height.
How are you measuring the ride height?
was everything torqued with the weight on the suspension or jacked up?
Is the left front end high? A high l/f will cause a lower r/r

 

I know about the shocks.
Ride height is measured floor to top of wheel well, top of tire to wheel well, and the shock on that side is compressed the same amount as the sag.
I believe it was torqued with weight on.
Currently, the right front is 1/2" lower than the left at the wheel well. I'll check the front end measurements in the morning using Hydroshocker's directions from another thread.

 

I haven't put them on yet but I just got my new leafs yesterday, bought the heavy duty ones from ATS . Came with new u bolts and shackles. A couple of other places offer both STD and heavy duty both being 5 leaf, this place had STD as a 5 leaf and hd as a 6 leaf, claim to raise the rear an inch to 1-1/2 from stock but I don't know what stock was I just know where it sits after 18 years and 258k miles. I raised and equalized the front torsion bars as it was scraping on stock size tires when I got it.
One suggestion/ you change ride height, GET IT ALIGNED. Your alignment WILL change.
Will see how much difference it makes when I get the new ones on. Just want it level maybe very slightly higher in the back.its higher in front now.

 

hey azimuth did you ever get your issue solved? 2wd or 4wd? 4wd had adjustable torsion bars, and usually when one side is "high" in back, opposite diagonal front corner will be low.
I just went thru the adjustment of my torsion bars yesterday, after having had the front end apart for new bushings... initially upon reassembly, I had the LF a bit low (like 1/2") and it pulled left, I adjusted the torsion bars (didn't measure the center of the wheel hub and rear control arm bolt like procedure says because I don't have metric tape measures, and my rear is sittin high due to brand new heavy duty leaf springs that I wanted to match up the height to) but I measured like you did at the center of the fenderwells side for side and matched them up, raised "low" side to match other side, went for another drive and no more pull,
but I know it needs aligned badly, as a result of having all the adjustment points taken apart for that bushing replacement.

 

It's AWD/4WD. I'm running LT245/75R16's-narrower than the 265/70's but just as tall.

Resolved to a point. Yes, the torsion bars were not adjusted properly, (at least an inch low). I had to wait till I got the add a leaf kit to bring the rear springs up to at least the 2450lb capacity of the stock. I should have read my build sheet before I replaced the stock springs. The replacement springs were from General Spring, (1800 lb) and I got an add a leaf kit of 792lb from them. The new garage added the leafs, and adjusted the torsion bars to be even and pretty close to the 2.9"/73mm spec. The ride increased dramatically. Unfortunately, the right front and rear are now high. The center of the left front and rear wheel wells are at 35", and the right front is 35 3/8", the left rear 35 1/2". Going to put some miles on to settle things, and bring it back to the garage to decide what to do next. Since the torsion bars are even, and the truck still isn't, I want to see if there's any other issues before I use the torsion bars to adjust the height. A problem with one of the the lower control arms or readjusting the rear shackles are my first thoughts. Stay tuned.

I have not yet been able to find what the approximate/correct wheel well height is supposed to be. Anyone have any ideas?

 

I think you can find those specs in the service manual....

 

Looked, but could only find the torsion bar adjustment info in the 2002 manual. I need the wheel well heights.

 

here is the fsm measurement procedure.

STANDARD PROCEDURE - HEIGHT MEASUREMENT - 4WD

The vehicle suspension height MUST be measured and adjusted before performing wheel alignment procedure. Also when front suspension components have been replaced. This measure must be performed with the vehicle supporting it's own weight and taken on both sides of the vehicle.

1. Inspect tires.
2. Jounce the front of the vehicle.
3. Measure and record the distance between the ground and the center of the lower suspension arm rear mounting bolt head (Height Measurement).
4. Measure and record the distance between the ground and the center of the front wheel (Height Measurement).
5. Subtract the first measurement from the second measurement. The difference between the two measurement should be 73 mm (2.9 inches) ± 3 mm (0.12 inches).

there is no factory measurement from the fender. if it was me...I would make them equal left and right sides measuring from the fender. if its a little high/lower than "spec" its no big deal. if its cranked to the max; you will have a harsh ride. align and done.

 

Both front torsion bars are even and adjusted to spec, but the left front and rear are running 3/8"-1/2" lower than the right at the fender, so somewhere there's still an issue.