Measure Drivelines

Handy Measuring Tips

Please take note of the suggestions below when making measurements.

The vehicle must be measured as it is to operate. Jacking up the vehicle will change your dimensions.
If your vehicle has a bolt-on transmission yoke, measure between U-joint centerlines.
If there is a flange mount on either or both ends, measure to the face(s).
When you install U-bolts do not over-tighten them. "D" dimensions 1-1/16" and 1-1/8": 14 to 17 ft. lb.; "D" dimension 1-3/16": 10-25 ft. lb.; "D" dimension 1-3/8": 32-37 ft. lb.
If you have specified greaseable U-joints, grease them after installation of driveshaft.

Measuring Yokes for U-Joint Size

Measure for U-joint size at third member yoke.
These dimensions must be accurate. If you don't get them, check for wear at "E" or "A."

Measuring based on the diagram at left, you should obtain one of the following pairs of measurements for "E" and "D." Make note of these measurements for use in the order form.

E = 3-7/32"   D =
1-1/16"

E = 3-5/8"    D =
1-1/16"

E = 3-5/8"    D =
1-1/8"

E = 3-5/8"    D =
1-3/16"

E = 4-3/16"   D =
1-3/16"

E = 4-3/16"   D =
1-3/8"

E = 4-31/32"  D =
1-3/8"

Depending upon your make of vehicle, you may need to take the following measurements for "A." Make note of these measurements for use in the order form.

SOME CHRYSLER CORP.

A =
2-1/8"

A =
2-5/8"

SOME GENERAL MOTORS

A =
2-9/16"

Measuring For One-Piece Shaft*

*Maximum allowable length is variable. A two-piece shaft system may be necessary.

Measure from the tip of the transmission output shaft to the centerline of U-joint at the third member. This will be the flat surface where the U-bolt hole is drilled. Take note of this measurement for use on the form as transmission output shaft to U-joint centerline.
Measure the output shaft protrusion and take note of this measurement.
In addition to these measurements, you will need to identify the transmission make and model and the differential make and model.

Measuring For Two-Piece System

Measure from the tip of the transmission output shaft to the centerline of U-joint at the third member. This will be the flat surface where the U-bolt hole is drilled. Take note of this measurement for use on the form as transmission output shaft to U-joint centerline.
Measure the output shaft protrusion and take note of this measurement.
In addition to these measurements, you will need to identify the transmission make and model and the differential make and model.