Detroit Locker question......

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Bob Igram

Junior Member
Joined
Nov 4, 2018
Posts
28
Reaction score
9
Location
Grants Pass, Or
First Name
Bob
Truck Year
1983
Truck Model
K20
Engine Size
350
Knowing that Corp 14 bolt Detroit Lockers are quite inexpensive, what are the general thoughts on using one on a fairly regularly driven vehicle.........I generally drive kinda gently, im fully middle aged, and ive driven a lot of 60's-80's 4wd, manual trans vehicles in both winter and summer conditions, including a IH Scout II w/ Detroit, so im reasonably familiar with what these differentials can do.......So, knowing that i have a stock 350/Sm465/205 case 83 K20, with 4.10s, 33" tires that will be used for 5-6K miles a year, would you consider a detroit locker any sort of liability whatsoever, thanks Bob
 

shiftpro

Full Access Member
Joined
Aug 31, 2012
Posts
4,855
Reaction score
6,092
Location
BC Canada
First Name
shiftpro
Truck Year
73-87
Truck Model
1500, 2500, 3500
Engine Size
350, 383, 454, 496!
Hi Bob, You have a good question here...
IMO it depends all on driver skill. A very good driver would have no problems and in fact, lots of fun in slippery conditions with a rear locker. Another point I consider is the power output of the vehicle. A truck for example that has the jam to break loose the rear wheels on snow or icy roads AT SPEED is a lot easier to control... drift is the word or some guys call it power sliding. A gutless rig that breaks loose the rear wheels from speed and momentum is balls harder to control than purposely gunning it and drifting.

By a 'skilled driver' I'm not talking about just someone with no accidents on their record, albeit that is one benefit of skilled driving and also luck. I mean someone who can slide and correct at will, excellent off road technique and just plain old race car driver mind set. So if you're one of these Bob, pin that truck with the rear locker and love life. But if your a driver who needs anti-lock brakes to survive, I would say you best stick with open diffs and by all means... SKINNY TIRES.

There is also the added liability of wearing down your tires (rear and front) a little sooner if driving aggressively on pavement.
 

Bob Igram

Junior Member
Joined
Nov 4, 2018
Posts
28
Reaction score
9
Location
Grants Pass, Or
First Name
Bob
Truck Year
1983
Truck Model
K20
Engine Size
350
Here in Southern Oregon, i really dont face BC, Canada conditions..........during an average winter, we see maybe 12" of total snowfall all winter, some years less or even none. For the most part, ive got little interest on breaking tires loose, quite the contrary, my preference is to retain traction,but i appreciate the input
 

77 K20

Full Access Member
Joined
Nov 9, 2012
Posts
3,101
Reaction score
3,119
Location
Montana
First Name
Mike
Truck Year
1977
Truck Model
K20 5" lift
Engine Size
HT383 fuel injected
I've had a detroit locker in the back of my truck for quite a while. It was my daily driver for a lot of years. They came stock in a lot of Ford trucks back in the day. I've just learned to take it a bit easy pulling out into traffic or when making tight turns. Then once I straighten out then give it more gas.
I even pull a trailer with mine. Yes, tires do wear a bit more on the rear, but I don't put a whole lot of miles on it anyway.
 

Blue Ox

Turning Diesel Fuel Into Fun
Joined
Mar 27, 2018
Posts
5,216
Reaction score
12,010
Location
LI-NY
First Name
Derek
Truck Year
MCMLXXXV
Truck Model
K20HD
Engine Size
6.2L
IMHO, unless you drive off road or it's a performance application I wouldn't do it. Tire wear, noise and sqirreliness in low traction situations make me never want to own another one.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,438
Reaction score
28,337
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
The answer seems obvious to me. If you liked how your Scout II drove, then get a Detroit. If you didn't, then don't. The trucks are similar in design so it shouldn't be like comparing apples to oranges.
 

Fitz

Junior Member
Joined
Nov 3, 2024
Posts
9
Reaction score
11
Location
Washington
First Name
Don
Truck Year
1978
Truck Model
K-10
Engine Size
454/465/205
I have had a Detroit Locker in my '78 K-10 short wide since 1979. Changed out the axles to a 14 bolt, and a Dana 60 in 1979. I have towed 40' fifth wheel travel trailers all over, to and from off road events. Parked in the camping spot, unhooked the fifth wheel, set up camp. Then got ready to wheel all weekend long in the same K-10. Pulled stock trailers, both loaded and empty. Sometimes into, and out of pastures, which weren't dry by any stretch of the imagination. Helped pull other farmer's tractors out of creeks, or pastures when stuck tending to their livestock.

Bottom line is, I will never use anything other than a Detroit Locker in the rear axle of any of my trucks. The only thing that I have noticed was the strange looks of folks that are close enough to hear when the locker unlocks when turning corners. It does sometime make a loud popping sound upon the side gear being released. Like others have stated, one must learn to operate the vehicle differently. However, as long as one wheel is in contact with the ground. Your vehicle will keep moving. Semper Fi. OUT!!!!!
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,438
Reaction score
28,337
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
I have had a Detroit Locker in my '78 K-10 short wide since 1979. Changed out the axles to a 14 bolt, and a Dana 60 in 1979. I have towed 40' fifth wheel travel trailers all over, to and from off road events. Parked in the camping spot, unhooked the fifth wheel, set up camp. Then got ready to wheel all weekend long in the same K-10. Pulled stock trailers, both loaded and empty. Sometimes into, and out of pastures, which weren't dry by any stretch of the imagination. Helped pull other farmer's tractors out of creeks, or pastures when stuck tending to their livestock.

Bottom line is, I will never use anything other than a Detroit Locker in the rear axle of any of my trucks. The only thing that I have noticed was the strange looks of folks that are close enough to hear when the locker unlocks when turning corners. It does sometime make a loud popping sound upon the side gear being released. Like others have stated, one must learn to operate the vehicle differently. However, as long as one wheel is in contact with the ground. Your vehicle will keep moving. Semper Fi. OUT!!!!!

Yeah, the strange looks from folks is just part of functional truck ownership, imho. I get funny looks when driving a welded diff around town, and people are often confused if they happen to hear my tire balance BB's come jingling out of suspension as I come to a stop.
 

sidschev

Full Access Member
Joined
Oct 2, 2023
Posts
286
Reaction score
510
Location
Arkansas
First Name
sidney
Truck Year
1984
Truck Model
c1500
Engine Size
350
gear drivin locker are better for nomal road driving...... rock climbing way different story
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,442
Reaction score
8,670
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Yeah, the strange looks from folks is just part of functional truck ownership, imho. I get funny looks when driving a welded diff around town, and people are often confused if they happen to hear my tire balance BB's come jingling out of suspension as I come to a stop.
Balance BBs and welded diffs.Dammit @bucket I'm starting to think somehow we are related. We're you an adopted kid?
 

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
4,192
Reaction score
8,030
Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
I have had a Detroit Locker in my '78 K-10 short wide since 1979. Changed out the axles to a 14 bolt, and a Dana 60 in 1979. I have towed 40' fifth wheel travel trailers all over, to and from off road events. Parked in the camping spot, unhooked the fifth wheel, set up camp. Then got ready to wheel all weekend long in the same K-10. Pulled stock trailers, both loaded and empty. Sometimes into, and out of pastures, which weren't dry by any stretch of the imagination. Helped pull other farmer's tractors out of creeks, or pastures when stuck tending to their livestock.

Bottom line is, I will never use anything other than a Detroit Locker in the rear axle of any of my trucks. The only thing that I have noticed was the strange looks of folks that are close enough to hear when the locker unlocks when turning corners. It does sometime make a loud popping sound upon the side gear being released. Like others have stated, one must learn to operate the vehicle differently. However, as long as one wheel is in contact with the ground. Your vehicle will keep moving. Semper Fi. OUT!!!!!
Mine was ok with the th400. Swapped in a 4500 and I instantly hated it on pavement at any speed.
 

Forum statistics

Threads
44,152
Posts
950,452
Members
36,268
Latest member
JUKA
Top