- Joined
- May 17, 2023
- Posts
- 94
- Reaction score
- 179
- Location
- Cincinnati Ohio
- First Name
- Joe
- Truck Year
- 1989
- Truck Model
- V1500
- Engine Size
- 350
Has anyone used a posi-traction/G80 rear differential in the front axle?
Front posi-traction differential
- Thread starter Buicknut
- Start date
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.
RustyPile
Left on own accord
- Joined
- Oct 7, 2017
- Posts
- 901
- Reaction score
- 1,124
- Location
- Elkhart, TX
- First Name
- Nick
- Truck Year
- 1983 GMC
- Truck Model
- 1500
- Engine Size
- 350 SBC
Not a good idea.. Makes for some awkward steering leading to loss of control, especially on wet roads and when turning..
- Joined
- May 17, 2023
- Posts
- 94
- Reaction score
- 179
- Location
- Cincinnati Ohio
- First Name
- Joe
- Truck Year
- 1989
- Truck Model
- V1500
- Engine Size
- 350
But it is possible.
RustyPile
Left on own accord
- Joined
- Oct 7, 2017
- Posts
- 901
- Reaction score
- 1,124
- Location
- Elkhart, TX
- First Name
- Nick
- Truck Year
- 1983 GMC
- Truck Model
- 1500
- Engine Size
- 350 SBC
Just because you CAN do it doesn't mean you SHOULD do it....
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
Anything is possible. Put a spool in it and see what happens.
75gmck25
Full Access Member
- Joined
- Oct 13, 2016
- Posts
- 2,266
- Reaction score
- 2,206
- Location
- Northern Virginia
- First Name
- Bruce
- Truck Year
- 1975
- Truck Model
- K25 Camper Special TH350 NP203
- Engine Size
- 5.7
In general, if you expect to drive it on pavement, you need a limited slip, selectable front differential. Some use switches that are electrical and some are air switched.
Old Guy Bill
Full Access Member
- Joined
- Sep 10, 2023
- Posts
- 428
- Reaction score
- 1,321
- Location
- KY
- First Name
- Bill
- Truck Year
- 1978
- Truck Model
- K20
- Engine Size
- 400
I just put an Eaton TruTrac diff in my front 10 bolt…
In my opinion it’s the best choice for the type of driving my truck will be used for.
In my opinion it’s the best choice for the type of driving my truck will be used for.
- Joined
- May 17, 2023
- Posts
- 94
- Reaction score
- 179
- Location
- Cincinnati Ohio
- First Name
- Joe
- Truck Year
- 1989
- Truck Model
- V1500
- Engine Size
- 350
If the G80 is such a terrible diff then what's the problem? It is not necessarily a street truck it's going in, plus if it has manual hubs, what's the problem?
- Joined
- Aug 3, 2010
- Posts
- 30,439
- Reaction score
- 28,345
- Location
- Usually not in Ohio
- First Name
- Andy
- Truck Year
- '77, '78, '79, '84, '88
- Truck Model
- K5 thru K30
- Engine Size
- 350-454
G80 as in Gov-loc?
I remember reading about this years ago, the theory of putting a Gov Loc in a front diff. I don't remember the outcome. I
don't think the functional bits of the Gov Loc care which direction they are spinning and it *should* work.
TotalyHucked
Full Access Member
- Joined
- Feb 24, 2020
- Posts
- 3,671
- Reaction score
- 11,856
- Location
- Auburn, Georgia
- First Name
- Zach
- Truck Year
- 1985
- Truck Model
- Sierra 1500
- Engine Size
- 5.3
Why don't you tell us what the plan is? Is it doable? Sure. Would *I* want to drive it on the street all the time? Absolutely not. For a mud truck or something, sure.
BKING33
Full Access Member
- Joined
- Aug 24, 2020
- Posts
- 278
- Reaction score
- 795
- Location
- York Springs, PA
- First Name
- Brian
- Truck Year
- 1987, 1989
- Truck Model
- K30, Suburban
- Engine Size
- 6.2, 6.2 turbo
I had a clutch plate style limited slip posi in a 8.5" front axle on a truck before. It worked great, but with the hubs locked you could not turn on dry pavement.
Off road it worked great.
Off road it worked great.
cptsnoopy
Junior Member
- Joined
- Apr 13, 2020
- Posts
- 6
- Reaction score
- 2
- Location
- Phoenix, AZ
- First Name
- Charles
- Truck Year
- 1981
- Truck Model
- K-20 Silverado
- Engine Size
- 454
I still have a limited slip in my front diff. Seemed to work off-road pretty well but it got scary real quick when I tried it on snow packed pavement. The truck jerked left and right and I had to stop to unlock the hubs. I suspect posi would have been more manageable and open diff would have been best.
- Joined
- May 17, 2023
- Posts
- 94
- Reaction score
- 179
- Location
- Cincinnati Ohio
- First Name
- Joe
- Truck Year
- 1989
- Truck Model
- V1500
- Engine Size
- 350
I just wanted to know if anyone had used one.
Strick
Full Access Member
- Joined
- Nov 25, 2020
- Posts
- 1,354
- Reaction score
- 3,315
- Location
- Dunn, NC
- First Name
- Harold
- Truck Year
- 1979
- Truck Model
- C20 Crew
- Engine Size
- 350
I'm putting a locker in a 10 bolt soon. It's 4.56 & locked on the tail & It's only gonna be 35's on the truck, as well as just a toy. I'm not doing a daily & commuting with it either. Some of the M10XX trucks came locked on the front Dana 60.
HS
HS
