Moparts Tech Archive
Drag Racing Tips
Narrowing Rear Axle Housing
These pics will show the alignment bar needed to narrow a rear housing correctly and be able to know that the ends have been welded on stright and are square to the axle center line of the carrier.
The pic below is the alignment bar and how it fits in the carrier unit.
The pics below will show the bar and how it keeps the ends strait and square.
The bar is what keeps the ends strait and square.
This pic shows the 'pucks' that fits the axle bearing ends and is centered and squared to the center section by way of the bar.
The puck is placed inside the bearing end and slid over the bar to get it strait and square.
Then the bearing end is slid up to the housing tube and readied for welding.
Then the bearing ends are welded to the housing. And as long as the bearing 'puck' can be slid in and out of the bearing end after the welding the bearing end was welded on correctly.
In My Opinion any rear housing that isn't shortened using this type of narrowing jig, Has NOT been narrowed correctly. And In MY Opinion will NOT be strait and square to the center line of the carrier.