More 9.75" diff talk
Senior Member
Joined: Oct 2017
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From: South Jersey
I actually wonder if there are cases where the factory decides to put on what they have even if what they have isn't what they may normally spec. For example, if they have an order for a 2.7L with 3.73 and they typically build this with the 8.8 but don't have any 8.8 on hand with the 3.73. Maybe they put in a 9.75 if they have it there. Nobody is going to complain about getting the beefier axle.
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From: PA
That may happen from time to time but Ford ain't in the business to lose money, and they are not just building one truck they are building 100 a day or so. And if they ran out of the cheaper 8.8's they are not gonna install a days worth of 9.75's if the option was not checked off and losing $ on every truck. Bean counters would shut down the line first.
Senior Member
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From: South Jersey
Thread Starter
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Can you clarify other options? Specifically, tow package and 2.7 eco payload package, short bed or long?
Once again thanks,
IMO which is best for whatever is irrelevant. It shouldn't be so difficult to order what you want.
5 Year Member
Joined: Nov 2017
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From: Simpson County, Kentucky
Great information in this thread, guys!
Now, I'm wondering if someone wouldn't mind to post a copy of a window sticker for a vehicle that has the HDPP option. Feel free to redact pricing, or not.
Thanks in advance.
Now, I'm wondering if someone wouldn't mind to post a copy of a window sticker for a vehicle that has the HDPP option. Feel free to redact pricing, or not.
Thanks in advance.
Senior Member
Joined: Nov 2017
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From: PA
Senior Member
Joined: Nov 2017
Posts: 901
Likes: 259
From: PA
The HDPP retains the 6 lug hubs. In the front the only difference is stiffer springs. In the back it runs a heavier duty version of the 9.75 called the 9.75HD. This axle is different than the regular 9.75 in that the axle tubes are thicker which increases the load rating a little, the differential case holds about 1.5 quarts more oil which will allow it to run a little cooler. The axle is rated at 4,800 pounds compared to ~4500 pounds for the regular 9.75 (if memory serves correctly but with in 50 pounds of that). The rear of an F-150 ranges from just under 2000 pounds to about 2300 pounds. So you get 2500+ pounds to load the rear axle before hitting RAWR. Typically, the rear axle on an HDPP truck can take slightly more than the payload of the same truck. For example, my payload on the yellow sticker is 2,399. However my rear axle can take about 2,550 before hitting RAWR.