9 inch help
Super Moderator
Joined: Apr 2004
Posts: 34,475
Likes: 2,800
WDM-CJ Ford F100, F150 Pickup '79 2.75 9 in NL 28 - Ford F100, F150 Pickup '80-'82 2.75 9 in NL 31
S319D Bronco 85-89
Ford F100 Pickup, F150 Pickup '85-89 3.50 9.0 L 31
You should plan on new bearings and I think you have to get them pressed on to the axles, so you'll be able to see all the sizes involved. You are changing from 28 to 31 spline so at least the ID of the bearing would be different--I think--.
Source:
http://www.fordification.com/tech/rearends_ford11.htm
S319D Bronco 85-89
Ford F100 Pickup, F150 Pickup '85-89 3.50 9.0 L 31
You should plan on new bearings and I think you have to get them pressed on to the axles, so you'll be able to see all the sizes involved. You are changing from 28 to 31 spline so at least the ID of the bearing would be different--I think--.
Source:
http://www.fordification.com/tech/rearends_ford11.htm
Thread Starter
|
Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
WDM-CJ Ford F100, F150 Pickup '79 2.75 9 in NL 28 - Ford F100, F150 Pickup '80-'82 2.75 9 in NL 31
S319D Bronco 85-89
Ford F100 Pickup, F150 Pickup '85-89 3.50 9.0 L 31
You should plan on new bearings and I think you have to get them pressed on to the axles, so you'll be able to see all the sizes involved. You are changing from 28 to 31 spline so at least the ID of the bearing would be different--I think--.
Source:
Ford Rear Axle Assembly Identification - Page 11 - FORDification.com
S319D Bronco 85-89
Ford F100 Pickup, F150 Pickup '85-89 3.50 9.0 L 31
You should plan on new bearings and I think you have to get them pressed on to the axles, so you'll be able to see all the sizes involved. You are changing from 28 to 31 spline so at least the ID of the bearing would be different--I think--.
Source:
Ford Rear Axle Assembly Identification - Page 11 - FORDification.com
Super Moderator
Joined: Apr 2004
Posts: 34,475
Likes: 2,800
Said to be same width at 65 or 65.25 inches, with equal length axles and large bearings.
Ford F-150 9-Inch Axles:
The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. It features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, large-bearing semi-floating axles, and many can be found with hefty 31-spline axleshafts. Another bonus is that the axleshafts are of equal length, so you’ll only need to carry one spare should you choose to.
Source:
https://www.therangerstation.com/tec...nchAxles.shtml
Ford F-150 9-Inch Axles:
The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. It features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, large-bearing semi-floating axles, and many can be found with hefty 31-spline axleshafts. Another bonus is that the axleshafts are of equal length, so you’ll only need to carry one spare should you choose to.
Source:
https://www.therangerstation.com/tec...nchAxles.shtml
Thread Starter
|
Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
Said to be same width at 65 or 65.25 inches, with equal length axles and large bearings.
Ford F-150 9-Inch Axles:
The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. It features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, large-bearing semi-floating axles, and many can be found with hefty 31-spline axleshafts. Another bonus is that the axleshafts are of equal length, so you’ll only need to carry one spare should you choose to.
Source:
https://www.therangerstation.com/tec...nchAxles.shtml
Ford F-150 9-Inch Axles:
The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. It features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, large-bearing semi-floating axles, and many can be found with hefty 31-spline axleshafts. Another bonus is that the axleshafts are of equal length, so you’ll only need to carry one spare should you choose to.
Source:
https://www.therangerstation.com/tec...nchAxles.shtml
I'll be able to answer this question tomorrow when I go to the storage unit. Didnt know if the difference between the 28 and 31 spline axles made a difference in bearing outer diameter.
Thread Starter
|
Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
I am considering this option but the entire housing will need work. Brake lines, vent lines, brakes, etc. I guess I should have known it wasn't going to be as easy as anticipated.
Trending Topics
Super Moderator
Joined: Apr 2004
Posts: 34,475
Likes: 2,800
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
I pulled the chunk on my 79 today and wanted to post the numbers off the ring gear.
DLAW - 4210A 10-4-78 16x44 M I P A
Thread
Thread Starter
Forum
Replies
Last Post
FuelishPleasure
1973 - 1979 F-100 & Larger F-Series Trucks
4
Nov 9, 2010 10:48 AM