Menu

Shop

Garage

Cart

Account

Products to Compare (max of 3)
X
Compare These Parts

Setting Proper Driveshaft Angles

9/19/2016
Add Article To List

To measure driveshaft angles and U-joint angles, start by lifting the vehicle either on a drive on style vehicle lift, or an axle contact style. This will keep the suspension under load and allow for correct measurement.

On your U-joints, the working angles may differ no more than 0.5° of each other; otherwise you will encounter speed changes that may prematurely wear out your bearings and caps.

To find the working angles follow these steps:
  • Place an angle finder on the bearing cap and take note of the reading.
  • Rotate the driveshaft 90° and repeat step one.
  • Find the difference between the two readings and this will be that u-joint’s working angle.
Remember the variance...

Once you have completed that, you can move to the other U-joint and repeat steps 1-3. Remember, the variance between the two can be no more than 0.5°. If the variance is greater than allowed, shims can be used to remedy the issue. The angle of the rear U-joint can be altered by installing a tapered shim like these between the leaf spring and the axle. The front angle can be altered by adding or removing shims from under the transmission mount. Also, look to make sure the transmission mount itself has not collapsed, as this could cause a change in angle as well.

If you are running a 4-link suspension system, you can adjust the upper rear end links in or out to bring the variation back into where it needs to be. Make sure to adjust both the left and right equally, and doube check after you are finished to make sure the rear end is still square in the chassis.

Products Featured in this Article

Related Articles

Choosing Parts for Your Ford 9" Third Member Build
by Speedway Tech Team - Posted in Tech
6/11/2018
Lucas P. explains how to choose the correct part for a Ford 9" third member build in order to achieve a bulletproof rear. You will find specific recommended parts to use from Speedway Motors.
GM 10-Bolt Polished Finned Aluminum Rear End Cover Installation Guide
by Steve Lewis - Posted in Tech
12/19/2017
Steve provides a step-by-step guide to install the Speedway Motors GM 10-Bolt Polished Finned Aluminum Rear End Cover.
Speedway Tech Talk - Ford Banjo Rear End Open Drive Conversion Kit
by Tim Matthews - Posted in Videos
6/28/2016
Tim talks about our Ford banjo rear end open drive conversion kit.
Model A I Beam Front Axle Install
by Speedway Tech Team - Posted in Tech
3/6/2018
Our hot rod expert takes you through his ford I beam axle setup. Follow as he sets up the front end on his split wishbone front suspension Model A.
Suspension Front Solid Axle Design
by Jason Lubken - Posted in Tech
9/15/2016
We will show you the differences among traditional I-beam and tube axles and suspension designs used on hot rods; the differences between cross and traditional steering, measuring for springs, what spindles to choose, and much more.
8 Inch to 9 Inch Upgrade
by John Wulbern - Posted in Tech
9/15/2016
In this Tech Tip, John responds to a customer looking to upgrade the 8” stock differential in his Cougar to a 9” open diff.
EMi Micro Sprint 3-spoke Hubs
by Frank Galusha - Posted in Videos
9/7/2017
Eagle Motorsports shows off their premier 3-spoke Micro Hubs.
Speedway Tech Talk - Early Ford Hubs & Bearing Components
by Tim Matthews - Posted in Videos
8/9/2016
Tim talks about soem of the early Ford hubs & bearing components we offer.
Adapting Tremec's Popular T5 5-speed Manual to Ford's Flathead V8 Engine
by Jason Lubken - Posted in Tech
9/22/2022
We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. We'll also walk you through choosing the correct parts in order to make this installation a breeze!
Ford And Chevy Spindle Options For Solid Axle Hot Rods
by Speedway Tech Team - Posted in Tech
4/4/2022
Dive into some of the history and unique differences between Ford and Chevy spindles for solid front axles and what will perform best on your hot rod.
Error
X
Note
X
Ok