Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: pinion angle
          
   
   

Reply To Thread
Results 1 to 9 of 9
  1. #1
    terrylittlejohn's Avatar
    terrylittlejohn is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2005
    Location
    kelligrews,nfld canada
    Car Year, Make, Model: 76 duster
    Posts
    108

    pinion angle

     



    just back halfed a 74 duster for a fellow drag racer . narrowed 8 3/4 32in by 14in tires.i have set pionion angles before but this is the first time that the pinion center line is higher than the trans center line ,the pinion angle is 5degs neg or in the nose down position the drive shaft angle is 2deg positive or up position because the trans is 3/4in lower than level center of the pinion . this is a ladder bar suspension so is the pinion angle neg3degs or am i reading this wrong. thanks

  2. #2
    terrylittlejohn's Avatar
    terrylittlejohn is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2005
    Location
    kelligrews,nfld canada
    Car Year, Make, Model: 76 duster
    Posts
    108

    pinion angle

     



    i look at the link,if i read it right the engine angle and the pinion angle are the important ones not the drive shaft angle.so in my case the engine is at neg3degs and the pinion is neg5degs so that totals neg8degs.so the trans centerline being below the pinion centerline does not affect the total angle.

  3. #3
    cffisher's Avatar
    cffisher is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2006
    Location
    Constantine
    Car Year, Make, Model: 57 chevy 2 dr wagon
    Posts
    9,476

    You'll be just fine.
    Charlie
    Lovin' what I do and doing what I love
    Some guys can fix broken NO ONE can fix STUPID
    W8AMR
    http://fishertrains94.webs.com/
    Christian in training

  4. #4
    Henry Rifle's Avatar
    Henry Rifle is offline CHR Member Visit my Photo Gallery
    Join Date
    Apr 2004
    Location
    Little Elm
    Car Year, Make, Model: 34 Ford Low Boy w/ZZ430 Clone
    Posts
    3,890

    On a ladder bar chassis with very little pinion angle change on acceleration, don't you think 8 degrees is a little excessive? Why not swing the pinion upwards a bit - maybe as far as only 1 degree down?
    Last edited by Henry Rifle; 05-30-2006 at 05:56 PM.
    Jack

    Gone to Texas

  5. #5
    lt1s10's Avatar
    lt1s10 is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Location
    rustburg,
    Car Year, Make, Model: 1997 CHEVY.S10 LT1-350
    Posts
    4,093

    How well the rear suspension controls the position of the rearend is the most critical issue that determines how much pinion angle will be needed. Some types of rear suspensions offer more control than others and require different angles. a ladder-bar suspension normally requires ½ degree of pinion angle, a four-link requires 1-2½ degrees, and a leaf-spring suspension requires up to 6 to 7 degrees. In all examples, we’re talking about negative pinion angle, i.e., the pinion is nose-down in relation to the driveshaft.
    Mike
    check my home page out!!!
    http://hometown.aol.com/kanhandco2/index.html




  6. #6
    terrylittlejohn's Avatar
    terrylittlejohn is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2005
    Location
    kelligrews,nfld canada
    Car Year, Make, Model: 76 duster
    Posts
    108

    pinion angle

     



    thanks for the reply,im just trying to get this straight that the pos2degs i have at the driveshaft does not come into play when doing the math, i always thought that driveshaft angle was to be 0deg to 2deg negative but never positive is that correct or not.thanks

  7. #7
    lt1s10's Avatar
    lt1s10 is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Location
    rustburg,
    Car Year, Make, Model: 1997 CHEVY.S10 LT1-350
    Posts
    4,093

    Quote Originally Posted by terrylittlejohn
    thanks for the reply,im just trying to get this straight that the pos2degs i have at the driveshaft does not come into play when doing the math, i always thought that driveshaft angle was to be 0deg to 2deg negative but never positive is that correct or not.thanks
    thats close enough, if you were racing, the idea would be to have the angle set so when you went throught the speed traps at WOT under full power the pinion angle would be 0 degrees. it takes less HP to turn it at 0 degree. i'd set the pinion angle at 2 to 5 neg. degrees and let it ride.
    Mike
    check my home page out!!!
    http://hometown.aol.com/kanhandco2/index.html




  8. #8
    terrylittlejohn's Avatar
    terrylittlejohn is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2005
    Location
    kelligrews,nfld canada
    Car Year, Make, Model: 76 duster
    Posts
    108

    pinion angle

     



    thanks again it was a interesting read, the key word here was simple,in my case the pos2degs at the driveshaft +the neg5degs gives me neg3degs pinion angle this is close enough for a 450hp small block mopar.

  9. #9
    terrylittlejohn's Avatar
    terrylittlejohn is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2005
    Location
    kelligrews,nfld canada
    Car Year, Make, Model: 76 duster
    Posts
    108

    pinion angle

     



    thanks mike that sounds good to

Reply To Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink