RAMMINVA

Would a spring re-arch help my saggy springs on my 90' or do i need to add a leaf or both?
Whats the biggest tire you can fit on a stock first gen.?
Thanks

Falcon1

I had mine re arched 3" and run 285 16's on it.

daking

i re arked mine 3 inch, and i run 35's, looks really good,

Jim Lane

Unless it is rearched by heating them and basically recreating the spring they will only last for a few years before they give out again.

Most of the shops that do springs use the "Cold Setting Method" which they use a press and just bend them back into the arch you want for the lift you are looking for but since the spring has lost its memory to hold the arch it will simply relax back into the sagged position.

Also when you arch them too much the eye-to-eye distance decreases and changes the geometry of the suspension causing a worse ride.

However much you lift your truck by whatever way you do it be sure to check and correct your pinion inclination angle, this is something that is probably always overlooked unless you are a professional chassis builder.

After I had my springs rearched on my truck I developed a noticeable harmonic vibration on acceleration but not on deceleration, after checking the pinion angle was off considerably that I corrected with a few shims.

This was with my suspension lifted only a few inches; imagine what 6 or 8 inches would do.

I have seen trucks lifted so high the slip joint came out of the transmission.

http://www.carcraft.com/howto/91758/index.html
Jim