Which 9" is best?
Logistics Pro
Joined: Nov 2011
Posts: 4,685
Likes: 80
From: Northville, MI
On non-ABS equipped vehicles drums, particularly wide ones, are OK in the rear with disc brakes in front as over 70 of your braking is done by the front brakes, hence the need for a proportioning valve. If your rear brakes are too efficient then you can experience brake lockup in the rear and loss of control. The rear brakes mostly provide stability and control.
The exception to that is if you are doing a lot of hard cornering. On the autocross circuit it was quite common for the 60' Mustangs and Camaros with rear drums to melt the rear grease seals due to heat build up while the 4 wheel disc Corvettes had no problems despite faster times. I don't think many of us will be doing that with our trucks.
The exception to that is if you are doing a lot of hard cornering. On the autocross circuit it was quite common for the 60' Mustangs and Camaros with rear drums to melt the rear grease seals due to heat build up while the 4 wheel disc Corvettes had no problems despite faster times. I don't think many of us will be doing that with our trucks.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
9" has a removable center section (aka carrier aka pumpkin) that contains all the parts. Very EZ to work on.
8.8" (introduced in 1983) is an integral rear axle with an inspection cover. All the parts have to be removed/installed thru the hole in the housing once the cover is removed.
8.8" has a differential pinion shaft lock pin that threads into the differential pinion shaft. The threads of this pin are notorious for snapping off.
Now, the entire rear axle has to be disassembled in an attempt to remove what remains of the lock pin or to replace the lock pin and shaft.
8.8" (introduced in 1983) is an integral rear axle with an inspection cover. All the parts have to be removed/installed thru the hole in the housing once the cover is removed.
8.8" has a differential pinion shaft lock pin that threads into the differential pinion shaft. The threads of this pin are notorious for snapping off.
Now, the entire rear axle has to be disassembled in an attempt to remove what remains of the lock pin or to replace the lock pin and shaft.
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