Notices
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

8.8 locker

Thread Tools
 
Search this Thread
 
Old Dec 25, 2021 | 03:18 PM
  #1  
Dipstik86's Avatar
Dipstik86
Thread Starter
|
Mountain Pass
Joined: Nov 2021
Posts: 116
Likes: 6
8.8 locker

Does anyone make a lunchbox style locker for the 8.8 rear diff that isn't a 7/8in cross pin diff? I bought one not knowing my 1986 f150 doesn't have a 7/8in cross pin diff so the locker side plates and cross pin didn't fit so I had to put it all back together open 😞
 
Reply
Old Dec 25, 2021 | 09:17 PM
  #2  
FuzzFace2's Avatar
FuzzFace2
FTE Legend
10 Year Member
Photogenic
Community Builder
Liked
Joined: Nov 2015
Posts: 30,856
Likes: 4,106
From: Angier, NC
Club FTE Gold Member
What size pin dose your truck have?
Is the locker you have fit a car 8.8 rear and if so did not know it used a different pin.
Dave ----
 
Reply
Old Dec 25, 2021 | 11:17 PM
  #3  
Dipstik86's Avatar
Dipstik86
Thread Starter
|
Mountain Pass
Joined: Nov 2021
Posts: 116
Likes: 6
Turns out from 1983-1986 they used a 31 spline diff in the f150 that has a 3/4" cross pin vs all other 31 spline 8.8's using a 7/8" cross pin. Turns out my truck has the goofy 3yr only diff luckily Powertrax makes a lunchbox locker that I bought off ebay. Anyone want a spartan locker? Lol
 
Reply
Old Dec 26, 2021 | 06:11 AM
  #4  
FuzzFace2's Avatar
FuzzFace2
FTE Legend
10 Year Member
Photogenic
Community Builder
Liked
Joined: Nov 2015
Posts: 30,856
Likes: 4,106
From: Angier, NC
Club FTE Gold Member
I guess they found the smaller pin was too weak?

I am guessing this is a 4x2 truck as I think the 4x4 had 9" axles in them.
Have you used one of them lockers before?
In a longer wheel base truck it should not be too big an issue but I have one in a 92" wheel base v8 car and in the wet it can be a hand full
Dave ----
 
Reply
Old Dec 26, 2021 | 08:35 AM
  #5  
00t444e's Avatar
00t444e
Logistics Pro
5 Year Member
Liked
Top Answer: 1
Top Answer: 3
Joined: May 2017
Posts: 3,523
Likes: 483
From: Southern OH
Those lockers work great, I have installed several. That is odd about the cross pin, the only 8.8 axles I have seen with a 3/4 cross pin are the 28 spline ones.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
brassplyer
1987 - 1996 F150 & Larger F-Series Trucks
7
Dec 21, 2018 08:12 AM
Cowboy34
Clutch, Transmission, Differential, Axle & Transfer Case
1
Jun 19, 2010 01:50 AM
351slug
1987 - 1996 F150 & Larger F-Series Trucks
2
Apr 28, 2008 06:32 AM
Jimbo302
Offroad & 4x4
5
Mar 11, 2004 12:04 AM




All times are GMT -5. The time now is 09:53 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE