# What should my pinion angle be set at?

## What should my pinion angle be set at?

According to Currie, the average car crafter should strive for between 1 and 3 degrees between the tailshaft of the transmission and driveshaft, and 1 to 3 degrees between the driveshaft and pinion. Furthermore, the two angles should be nearly equal (between 1 and 3 degrees), but always opposite (see crude diagram).

**What is the correct driveline angle?**

1 to 3 degrees

Ideally, both driveshaft-operating angles will be 1 to 3 degrees. Anything over 3 degrees at the rear axle will shorten your universal joint’s life and could create vibration.

### How do you know if pinion angle is off?

So what symptoms would lead you to identifying bad pinion angle? Drive train vibration at speed, wheel hop and universal joint fatigue/failure are all good indicators. These things can come out of no where with suspension bushing failures, engine and transmission mount failures or even leaf spring fatigue and wrap.

**How do you check a driveshaft pinion angle?**

Place a spirit level protractor on the driveshaft about halfway between the transmission and the Differential. Read and record the angle shown on the protractor scale and note whether the driveshaft points up or down at the front. Record the angle as “3 degrees up” or “2 degrees down,”etc.

## How do you set pinion angle with leaf springs?

If you’re running a leaf-spring car, the pinion angle is set by the welded perches on the axle housing. The universal joint is the part of this equation that allows the pinion angle to change as needed. A universal joint is designed to be comfortable with between one and three degrees of pinion angle.

**Is 5 degrees of pinion angle too much?**

Here’s an illustration of what things might look like with too much angle, it’s exaggerated for effect, but imagine that’s 5 degrees on each end. So, with too little of an angle you’ll wear out your u-joints, but too much of an angle you’ll wear out your u-joints and end up with some nasty vibrations.

### What is the maximum angle for a universal joint?

Most significant is the ability of the universal joint to operate at high misalignment angles. Operating angles up to 15 degrees are not uncommon. Another feature of the universal joint is the bearing and seal design that resists lubrication loss and contamination.

**How do you calculate the operating angle of a driveshaft?**

To calculate operating angles, you must add or subtract the component angles- that is, the relationship of the operating angles between the transmission, driveshaft and the differential, on each side of the driveshaft (drive and driven ends).

## What can a bad pinion angle cause?

Pinion angle is one of the most important considerations on a lifted vehicle, but sadly it is often overlooked. The wrong angles can lead to horrible drive line vibrations, as well as premature failure of U-joints, driveshafts, pinion bearings and even transfer case output bearings.

**What’s the correct pinion angle for a leaf spring suspension?**

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. In all examples, were talking about negative pinion angle, i.e., the pinion is nose-down in relation to the driveshaft.

### How can I change the angle of the leaf spring?

To change the pinion angle, wedges can be installed between the spring mounts and the leaf springs, thus tipping the pinion either upward or downward depending upon the shim being used and its direction. Preload and spring wrap-up can be controlled using traction bars or slapper bars, which are the most common methods used in lower-horsepower cars.

**What should the crank angle be on a leaf spring car?**

For leaf spring cars, the pinion CL is set between 5-7 degrees down in comparison to the crankshaft angle (keep your temperature gun handy.) Ladder bar cars normally run three degrees down in relation to the crank. Equal-length four-link bars run one-to-two degrees down in comparison to the crank angle.

## What should be the pinion angle of a car?

According to Currie, the average car crafter should strive for between 1 and 3 degrees between the tailshaft of the transmission and driveshaft, and 1 to 3 degrees between the driveshaft and pinion. Furthermore, the two angles should be nearly equal (between 1 and 3 degrees), but always opposite (see crude diagram).