How exactly does the posi-trac rear end on a Plymouth work!?


Asked by Dec 19, 2009 at 01:22 PM

Question type: Car Customization

8 Answers

most posi units have 2 clutch packs with a spring in the middle, in a case, in the axle. the clutches provide just enough torque to turn the wheels. other then that its like an open axle, unless if you have some fun with it.

2 of 2 people found this helpful.

it just does, similar to how a rainbow is made

16 of 16 people found this helpful.

it regulates traction lika the Traction Control System...something like transfers power to the rear wheels...


It would depend on what year the rearend was from pre 1969 Dodge used what was known as a true posi which actually locked the 2 axles together but this set up actually caused control issues and was stopped

1 of 1 people found this helpful.

is it the same with the Mitsubishi Pajero's 2wd-4wd stickshift? the Pajero has 2 transmissions and it drives me crazy....both the regular transmission and the 2wd-4wd drives me crazy coz u have to use the clutch on both of them to get the Pajero moving...

are you talking about a spool?


something like it the same or is it different from a Posi-Trac?


Ok they talk about a locked center differential which is like the old detroit lockers it actually makes the axle a solid unit, You can shift it in and out. This arrangement was very popular in offroading because you had the best of both worlds solid axle in the dirt and one wheel peel on the pavement. As for stopping to engage the 4x4 this is due to the fact the front hubs are the reaction type which means the truck has to be in 4x4 to lock the hubs. so if you try to shift on the fly the front drive shaft isn't turning and it will grind. Hope this helps

Your Answer

Add photo

Related Questions

  • 1947 Plymouth powered by chevy, conversion automatic to manual 3 answers

    I have a 1947 plymouth with a 350 chevy motor and a turbo 400. What would be the best way to convert this to a manual transmission. The brake pedal come from the floor and there is no clutch set up. ...



    Car Customization

  • Door mount mirror 1947 Plymouth 2 answers

    I want to place a 4" peep mirror on the door of the 1947 plymouth,but I need an extended arm to be able to see traffic in back of me.I need something like a motorcycle mirror. Finding the motorcycle m...



    Car Customization

  • engine swap into a 73 roadrunner 4 answers

    I have recently obtained a 73 roadrunner with a stock 400 big block with a 4 speed transmission and 8 3/4 rear end all numbers matching. I want to replace the engine with something newer so if I do...

    1973 Plymouth Road Runner


    Car Customization

  • how can i make my sundace faster to beat my friends cars 31 answers

    i looking to try and make my sundance sound good and go fast at the same time

    Plymouth Sundance


    Car Customization

  • Gas Gauge 1947 Plymouth 8 answers

    What are the ohms on a 1947 plymouth business coupe.





Looking for a Used Plymouth in your area?

CarGurus has 589 nationwide Plymouth listings starting at $1,995.


Search Plymouth Questions

Plymouth Experts

#1 Tom Demyan
Tom Demyan
Reputation 930
#2 dandyoun
Reputation 430
#3 LouB
Reputation 330
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.