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 (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
1310 8" Ford
1310 9" Ford
1330 9" Ford (Big Cap)
1350 9" Ford
1310/1330 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