WIDTH
When ordering a rear end specify the "Track" width (see drawing on
the rear end measurement page). This is measured from hub face to
hub face (wheel mounting surface). This dimension is the actual width
of the rear end and does not allow for brake hats or wheel spacers.
DO NOT order using "Tread Width" because wheel offsets and back spacing
vary too much to be accurate. The exception to this is "Nextel Cup"
cars. |
PINION
LOCATION
The standard location for the pinion is centered between the hub faces,
an equal distance from each side. If any pinion offset is desired,
please call out the distance and direction by adding and/or subtracting
the desired amount from/to the left and right sides of the rear end.
Example: A 60" rear end with the pinion moved 2" to the left (driver's
side) would be called out - 60" -2L +2R. This will cause a 4" difference
in the length of two parts, which would normally be the same. Caution:
If only one dimension is called out, the track (width) of the rear
end will change by that amount. Example: A rear end ordered as 60"
-2L will end up 58" hub face to hub face. In this example the left
side is the same as a 56" and the right side is will be the same as
a 60". |
MOUNTS
The standard location for mounts is with the pinion centered between
them. Mounts installed on a rear end with the pinion offset will also
have the mounts off set the same amount. If you want the mounts centered
to the hub faces on an offset rear end, it must be ordered specifically
that way. |
HOW
TO MEASURE HUB OFFSETS
1. Place the hub on a flat work surface with the backside facing up.
2. Place the inner bearing in the hub race making sure it is seated.
3. Place a straight edge across the back of the hub and measure the
distance from the bearing to the straight edge. This is "X". 4. Now
measure the distance from the wheel-mounting surface of the hub or
drive plate to the same edge of the straight edge. This is "Y". 5.
Subtract "X" from "Y" to determine hub offset. |
