Order Forms





Measuring For Custom 9-inch Rear Ends

To build a custom rear end for your vehicle, we require the information outlined below:

1. Overall Width (Dimension A below): The overall width can best be determined by putting the tires under the car (make sure to allow a minimum of one-inch clearance for the fender and the frame rails) and measure the distance between the wheel mounting surface on each wheel.

2. Pinion Offset: (Dimension PO below): The pinion location in most cases will be centered; in some cases, the housing is off-center to accommodate driveshaft or suspension bracket clearance

3. Wheel Lug Bolt Pattern: The lug bolt pattern is the number of studs and the diameter of the circle on which they are placed. See note in the image here for details on how to measure the circle diameter.

4. Vehicle year make and model:


Measure For A Custom Rearend

Click to view larger

Dimension Description
A Overall Width - Between wheel mounting surfaces
PO Pinion Offset - Difference Between the Center of the Pinion and the Center Line of the vehicle

Measuring For Custom Axles

When purchasing custom axles it is important to verify the Axle length, Axle Face dimensions  Housing End type and Brake Space to assure proper fit.


Measuring Axle Length

Currie uses the X and Y dimensions shown below to determine the length of custom axles. All dimensions should be accurate to the 1/16 of an inch to assure a proper fit.

For the "X" dimension (Drivers side axle) hook the tape measure on the stud (as shown) and measure to the outside edge of the end flange.



For the "Y" dimension (passenger side axle) hook the tape measure on the stud (as shown) and measure to the outside edge of the end flange.



Axle Face Dimensions

Axle face and register diameter are essential dimensions for proper brake fitment. A slightly smaller axle face diameter is acceptable, as this does not create clearance issues for brake fitment. The register diameter is a critical dimension as it serves to locate both the drum or disc brake rotor. Use a dial or digital caliper to measure the register diameter to 1/1000th of an inch accuracy. If your axle face or register diameters do not match the size options above, please contact sales to speak with one of our experts.


Click image to enlarge


Brake Space

Brake Space (BS) is the distance from the face of the housing end to the face of the axle; this is a critical dimension for proper brake fitment. If your housing end type and brake space dimensions do not match the options below, please contact sales to speak with one of our experts.



Late Big Bearing = 2.5 in. brake space

Early Big Bearing = 2.365 in. brake space

Small Bearing  = 2.52 in. brake space


Housing End Types

Below are shown the three housing ends that Currie Enterprises uses when manufacturing a custom & rear end. For new rearends the Late Model Large Bearing end is the standard. For replacement rear ends, where the original brakes or axles will be reused it is important to specify the correct housing end type. Refer to the images and dimensions below to identify your vehicle's housing end type.

Late Model Large Bearing (Torino) Housing End


Early Large Bearing Housing End


Small Bearing Housing End



Pinion Yoke Size

Yoke Size

Yoke Series A B C D
1310 8" Ford 3.219 1.125 4" 5/16
1310 9" Ford 3.219 1.063 4" 5/16
1330 9" Ford
(Big Cap)
3.625 1.125 4" 5/16
1330 Spicer 3.625 1.0625 3.0" 5/16
1350 9" Ford 3.625 1.188 4.1" 3/8
1350 Spicer 3.625 1.188 3" 3/8
1410 Spicer 4.188 1.188 4.312" 3/8
1480 Spicer 4.188 1.375 3.5" 3/8
Ford Long


A = Inside Tab to Inside Tab (Width across u-joint caps)
B = U-joint Cap Diameter
C = Overall Height/Length of Yoke
D = U-bolt Diameter