Leaf Spring Pinion Angle

You never want the rearend setup with positive pinion angle.

Leaf spring pinion angle.

1 either an equal angle set up where the pinion flange and transfer output flange are exactly parallel like factory set ups. Width 4 degree steel pair. This is when the yoke of the rearend is tilted upward more than the driveshaft. Vehicle engine search vehicle engine search make model search.

Ideally the driveshaft angle should be 3 degrees or less and since we have already established that the output shaft of the transmission and the input shaft of the pinion must be parallel that. A ladder bar or 4 link setup is much more rigid and therefore usually only needs 1 3 degrees. Monday 12 7 2020 if shipped by air. This can lead to binding of the u joints as the suspension reacts and will hurt traction.

But with a lot of lift and a short shaft like a spring over 40 this is difficult. Find pinion angle shims and get free shipping on orders over 99 at summit racing. Too light of a spring rate will also cause the rear end to lose an excessive amount of pinion angle under acceleration leading to a loss of forward bite. When not racing keep the springs unloaded by simply placing a jack stand under the chassis frame rail.

This simple task will increase the life of the leaf spring dramatically. According to bickel a ladder bar suspension normally requires degree of pinion angle a four link requires 1 2 degrees and a leaf spring suspension requires up to 6 to 7 degrees. This allows you to use a cheaper normal dirveshaft. The typical leaf spring rear suspension will need 5 7 degrees of negative angle.

You never want the pinion setup with a positive pinion angle pointing up. In general the largest angle for racing applications should be 2 degrees and the centerlines should be parallel within a few 1 10 of a degree.