Hi guys! Want to know if the super lift spring lift kit is the best kit for the $$$. Not interested in the blocks at all. Anyone know a good dealer that sells the super lift 4" spring kits, complete w shocks etc, etc, for a decent price?? Have 35 x 12.50 x 15's on 15x10 turbines,which were installed from the dealer on the truck on 79. Not putting a body lift on it. Also, will i have to change the angle of my diff, both fr and back to compensate for the change in ride height?? Have heard that has to be done. Also, rancho's the best shocks?? Lemmeknow


79 F150 4 x 4, XLT Lariat, loaded, 400 (being redone) c6, 3.90's, the A/C still pumps cold and its been sitting for 15 years!!!

 

To change the angle on the front diff you have to get some offset C-bushings. I have some 7 degree offset ones from energy suspension for mine. They also have 2 degree and 4 or 5 degree as well. 7 degrees is for more than 4 inches of lift. There are angled shims for the rear axle to angle the pinion up. I have rancho 5000's all the way around on my 78 and have no complaints. The truck rides fairly well with them. There are a lot of good shocks out there though.

People who say it can't be done should not interrupt the person doing it.

 

For the front I would suggest getting a set of 2 1/2" radius arm drop brackets and a set of 2 deg. C-bushings. By going 4" and not lowering the radius arms, the bushings on the end will bind really easy and seriously limit suspension droop. If you're talking about rotating the pinion on the front upward to help compensate for the lift I would stongly advise against this. doing so will change the caster on the front drastically and give you some terrible steering characteristics. W/ only 4" you really shouldn't have to rotate the rear pinion either. An easy/cheap way to gain 4" in the rear is to go get a set of rear spring frame mounts, like on the front of the rear springs, and attach these to the frame in the rear where the shackle mount is. You then flip the shackle around and attach them to the spring mount you put on. This will net you 4" of lift and cost very little. As an added bonus it will also rotate the pinion some and keep your angles in check.
One more thing, make shure to check your brake lines. 4" is enough to really put a stretch on factory brake lines. You will have to buy longer lines or modify some of the mounting brackets your current lines attach to.

"like a rock" on the sides of roads everywhere.

72 F-100 4x4. fresh 390 4bbl, NP435 tranny, spooled rear, 2"skyjacker springs front, 2" custom shackle flip rear, "mild" fender trim, 35x15.50 TSL/SX tires.

 

I have a 4 inch lift on my 78 with radius arm drop brackets and all of that stuff. Well most of my rear lift is spring. I have the factory lift blocks and had some beefy springs made. At a cost of ONLY $500. My rear pinion angle is still crappy so I have to shim or cut and re-weld the mounting brackets.

People who say it can't be done should not interrupt the person doing it.