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Guest Message by DevFuse

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Going side ways (to the right, all the times) when hard shifting

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5 replies to this topic

#1 fastkurve


    New Boss 302 Member

  • Canadian Region
  • 21 posts
  • Region:Canada, Central
  • Current Vehicle:2012 Boss
  • Boss 302's Year:2012

Posted 28 August 2017 - 11:15 AM

Hi everyone,


I do visit drag strip once in a while, and under hard shifting (power shifting), the rear end is always going right

until the tires stop  spinning, most of the times, I have to lift the gas pedal before ending up in a spinout.


The  is no sign of damaged rear end bushing damages, besides having a Roush upper arm (which cured the wheel up issue),

the car is stock. Still running on the P-Zero. When cruising the highway, the car goes straight arrow. The car is just over 20,00 miles.


Would the Roush LCA cures this issue ? In case, where you guys recommend upgrading the LCA, I would prefer staying with rubber

bushing type to keep the NHV at the lowest. I am well served from Roush UCA and was wondering if theirs LCA would do the magic

for the sideways behavior.


thanks in advance for your feedbacks,





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#2 Ginger


    New Boss 302 Member

  • Member
  • Pip
  • 211 posts
  • Region:Other
  • Current Vehicle:2012 Boss 302
  • Boss 302's Year:2012

Posted 28 August 2017 - 01:55 PM

Check to see if the rear is centered. You may need an adjustable panhard bar. Also make sure that both tires are spinning. you may have a bad worm gear or worm wheel in the torsen dif.

However this is a job for someone that knows torsen gears. This is assuming you have the torsen in your Boss. Many guys pull the torsen out for drag racing. I'm told they cant handle the stress and fail. I'm no expert on this. This is just info that I have heard about several times.

  • Rich B. likes this

#3 Rich B.

Rich B.

    Not another year gone by?

  • Northeast Region
  • 3,648 posts
  • Region:U.S., Northeast
  • Current Vehicle:Boss 302 and '16 Buick LaCrosse
  • Boss 302's Year:2013

Posted 28 August 2017 - 03:54 PM

This is interesting. https://en.m.wikiped...ip_differential And just when I sort of thought I understood this. https://itstillruns....ip-7669936.html Close.

Edited by Rich B., 28 August 2017 - 04:38 PM.

#4 kevin


    New Boss 302 Member

  • Member
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  • 102 posts
  • Region:Decline
  • Current Vehicle:2012 boss #861 1967 Olds 442 1985 Monte Carlo SS 1995 Lincoln Mark VIII
  • Boss 302's Year:2012

Posted 31 August 2017 - 11:44 AM

when researching information on correct pinion angle I came across an article that stated when the yoke was down the car would tend to go right under hard acceleration . So check pinion angle,

  • Rich B. likes this

#5 fastkurve


    New Boss 302 Member

  • Canadian Region
  • 21 posts
  • Region:Canada, Central
  • Current Vehicle:2012 Boss
  • Boss 302's Year:2012

Posted 01 September 2017 - 10:48 AM

Hi everyone, thanks for sharing your thoughts and experience. I will look into your suggestions.






    Experienced Boss Owner

  • Great Lakes Region
  • 958 posts
  • Region:U.S., Great Lakes
  • Current Vehicle:2012 Boss
  • Boss 302's Year:2012
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Posted 01 September 2017 - 05:08 PM

I had throttle steer under hard acceleration.  The FRPP LCAs cured the problem. 


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