Moog 5401 springs.

Discussion in 'Race car chassis tech' started by Da Torquester., Sep 23, 2015.

  1. Da Torquester.

    Da Torquester. Platinum Level Contributor

    Anyone using the moog 5401 rear springs ? How's the ride height, traction, street handling, and hook at the track ? Thx,John.
     
  2. Da Torquester.

    Da Torquester. Platinum Level Contributor

  3. Da Torquester.

    Da Torquester. Platinum Level Contributor

    Really? I find it amazing. No one uses these. :(
     
  4. Bigpig455

    Bigpig455 Fastest of the slow....

    If it makes you feel any better, I went and looked at the moog # for the springs I bought a few years ago, and they were 6204's for the front....wanna talk about 6204's?
     
  5. Da Torquester.

    Da Torquester. Platinum Level Contributor

    Hi, thx for responding. I do have 6204s up front. I have 5379s in the rear. Was curious if anyone has used 5401s in the rear for better street / strip traction.
     
  6. Bigpig455

    Bigpig455 Fastest of the slow....

    I've always just used whatever really beat springs that came with the car, even grabbed A-body springs my friends were throwing away. It seems the factory springs weakened pretty quick and the ass end of these cars would sit right on the axle....even in the promotional photos brand new!

    But no, never tried the 5401's - what's the actual application for them?
     
  7. ShadyLane

    ShadyLane Member

    Yes I've used them. I've alternated between 5401 and 6321 depending on tire diameter to get the ride height/suspension geometry I want. You can fine tune either by installing/removing the rubber isolators. 6321 is about 1" taller. traction good - maybe a little soft on the spring rate.

    [TABLE="width: 762"]
    <colgroup><col span="3"><col><col><col><col><col></colgroup><tbody>[TR]
    [TD] PN[/TD]
    [TD]inside dia[/TD]
    [TD]bar dia[/TD]
    [TD] spring rate[/TD]
    [TD]free height[/TD]
    [TD]weight on rear spring[/TD]
    [TD]compression distance[/TD]
    [TD] installed height[/TD]
    [/TR]
    [TR]
    [TD="align: right"]5379[/TD]
    [TD="align: right"]5.57[/TD]
    [TD="align: right"]0.562[/TD]
    [TD="align: right"]121.5[/TD]
    [TD="align: right"]14.75[/TD]
    [TD="align: right"]550[/TD]
    [TD="align: right"]4.53[/TD]
    [TD="align: right"]10.22[/TD]
    [/TR]
    [TR]
    [TD="align: right"]5401[/TD]
    [TD="align: right"]5.58[/TD]
    [TD="align: right"]0.531[/TD]
    [TD="align: right"]129[/TD]
    [TD="align: right"]13.15[/TD]
    [TD="align: right"]550[/TD]
    [TD="align: right"]4.26[/TD]
    [TD="align: right"]8.89[/TD]
    [/TR]
    [TR]
    [TD="align: right"]5409[/TD]
    [TD="align: right"]5.52[/TD]
    [TD="align: right"]0.554[/TD]
    [TD="align: right"]143[/TD]
    [TD="align: right"]13.44[/TD]
    [TD="align: right"]550[/TD]
    [TD="align: right"]3.85[/TD]
    [TD="align: right"]9.59[/TD]
    [/TR]
    [TR]
    [TD="align: right"]6319[/TD]
    [TD="align: right"]5.58[/TD]
    [TD="align: right"]0.531[/TD]
    [TD="align: right"]119.2[/TD]
    [TD="align: right"]14.17[/TD]
    [TD="align: right"]550[/TD]
    [TD="align: right"]4.61[/TD]
    [TD="align: right"]9.56[/TD]
    [/TR]
    [TR]
    [TD="align: right"]6321[/TD]
    [TD="align: right"]5.58[/TD]
    [TD="align: right"]0.531[/TD]
    [TD="align: right"]119[/TD]
    [TD="align: right"]14.29[/TD]
    [TD="align: right"]550[/TD]
    [TD="align: right"]4.62[/TD]
    [TD="align: right"]9.67[/TD]
    [/TR]
    [TR]
    [TD="align: right"]5385[/TD]
    [TD][/TD]
    [TD="align: right"]0.562[/TD]
    [TD="align: right"]168[/TD]
    [TD="align: right"]12.6[/TD]
    [TD="align: right"]550[/TD]
    [TD="align: right"]3.27[/TD]
    [TD="align: right"]9.33[/TD]
    [/TR]
    </tbody>[/TABLE]
     
  8. Bigpig455

    Bigpig455 Fastest of the slow....

    Great chart! Thanks for the info!
     
  9. Da Torquester.

    Da Torquester. Platinum Level Contributor

    Wow ! Thank you. That's help for me. Much appreciated. :TU: Seems like the 6321 might be better than what I'm using now. I installed the 5379s. Not sure yet how they'll do at the track. Only thing is they increased the front to rear angle a little on my lower trailing arms, which I've been told hurts traction. The ride seems ok though. Just continuing to look for better street/strip traction. John.
     
  10. ShadyLane

    ShadyLane Member

  11. Bigpig455

    Bigpig455 Fastest of the slow....

    Amazon has them for 58.00, but you should be able to talk your local Napa down to 50 or so....
     
  12. Gary Bohannon

    Gary Bohannon Well-Known Member

    Just discovered this old thread.
    I have 5379 on my car now. These give me the tire clearance and give good traction.
    I have 6321 and 5401 and cc501 springs on the shelf.
    5401 and cc501 sat low. cc501 is a firm cargo spring.
    6321 is a little softer and shorter than 5379.
    Anybody need springs?
     

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