I added 2 inch lowering shackles to my 70 F100 short Flareside. It seemed to make the ride harsher, maybe due to the angle of the springs since they were then much lower at the front than the back. Most after market front hangers were at least 4 inch drop and I didn't want the go that low. A hanger flip would go even lower so I decided to try something different.

I ground the rivets off and knocked off the hangers. Using the lower mounting holes as a reference point, I drilled 2 new holes in line with the lower holes 2 inches higher up on the frame. I bolted the hanger temporarily to the frame, using the lower holes on the hanger and the 2 holes I had drilled. I marked the part of the hanger that now stuck above the frame rails. This includes the original upper holes and used a cut off wheel to remove the area.

Using the cut off pieces, I made "ears" lower on the hanger to match up with the original lower holes on the frame. I welded the ears on and then welded a large flat washer over the ears as a reinforcement. I used 4 - 1/2"x1" bolts to reattach the hanger, now 2 full inches higher on the frame, lowering the front end of the spring to match the 2 inch longer shackles.

I don't have the bed on right now but I hope this leveling will help the ride while letting the tires better fill the fender openings.

 

Nice work. Dropping the front hanger 2" should further lower truck 1" at axle.
The shackle length should not have much effect on ride, nor changing angle of leaf by that amount. Some trucks come with the front hanger way lower than the rear. (toyota, nissan). If anything it is better that way as the axle arc is more vertical and aligns better in wheel well.

 

Yep, the hangers and shackles together should give a true 2 inch drop and put the angle of the spring back close to the factory angle. It should also return the pinion angle to stock.