question about setting pinion angle on the 4l60?
02-05-2011, 09:08 PM
#1
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question about setting pinion angle on the 4l60? i got the motor in on my 68 camaro today,need to set the crossmember to hold the trans.i know u want to use the angle finder on the back of the trans to set the angle.if i understand this correct you want the tail of the trans leaning down -2 degrees correct?
02-05-2011, 10:26 PM
#2
Stan, this is one of the better threads I've read. There are others using the search for 'driveshaft angle". Hope this helps!
https://ls1tech.com/forums/conversio...ion-angle.html
Post #8 makes sense to me, but see what you think.
https://ls1tech.com/forums/conversio...ion-angle.html
Post #8 makes sense to me, but see what you think.
Last edited by gMAG; 02-05-2011 at 10:32 PM.
02-06-2011, 12:16 AM
#3
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this one?
"Everyone has their opinions but for drag....here is what works. You want the u-joints at equal but opposite angles while under power. check out baselinesuspensions.com for more info BUT here is the best way to set you car up. FORGET your driveshaft's angle all together. Its the relationship between the pinion centerline (back to front) and the crank centerline that counts. SO measure your balancer's angle with the engine in and weight on the chassis.....etc. Let just say its sitting at zero degrees...I say zero b/c the term level has nothing to do with setting this. NOW, you check the face of the pinion flange....say you measure 2 degrees towards the sky. for a total difference of....2 degrees positive.
NOW, when you smash the skinny pedal that rear pinion tries to walk up the pinion causing the front of the axle to point skyward. As previously stated, under load or throttle, we want the u-joint angles to be the same roughly. SO in order to achieve this, we set the angle of the pinion down when compared to the crank so that, in theory, the flex in the rear suspension makes the angles the same.
Finally, depending on what type of suspension you run depends on your angle you should set it at. Depending on bushings etc. For all intense and purposes, 3 degrees less that the crank is a pretty good start point. Pinion angle affects also how much squat your car has off the line. I run my mustang this way and its work flawlessly. Check baselinesuspensions b/c literally what I just wrote was cliffnotes"
"Everyone has their opinions but for drag....here is what works. You want the u-joints at equal but opposite angles while under power. check out baselinesuspensions.com for more info BUT here is the best way to set you car up. FORGET your driveshaft's angle all together. Its the relationship between the pinion centerline (back to front) and the crank centerline that counts. SO measure your balancer's angle with the engine in and weight on the chassis.....etc. Let just say its sitting at zero degrees...I say zero b/c the term level has nothing to do with setting this. NOW, you check the face of the pinion flange....say you measure 2 degrees towards the sky. for a total difference of....2 degrees positive.
NOW, when you smash the skinny pedal that rear pinion tries to walk up the pinion causing the front of the axle to point skyward. As previously stated, under load or throttle, we want the u-joint angles to be the same roughly. SO in order to achieve this, we set the angle of the pinion down when compared to the crank so that, in theory, the flex in the rear suspension makes the angles the same.
Finally, depending on what type of suspension you run depends on your angle you should set it at. Depending on bushings etc. For all intense and purposes, 3 degrees less that the crank is a pretty good start point. Pinion angle affects also how much squat your car has off the line. I run my mustang this way and its work flawlessly. Check baselinesuspensions b/c literally what I just wrote was cliffnotes"
02-06-2011, 08:01 AM
#5
yes. as much as you can
02-06-2011, 06:47 PM
#7
You can do it this way if it helps you to better understand the angles, but it's not really necessary.
It has more to do with the relationship of the 2 angles (1 crank/trans & 2 rear pinion).
As an example, let's say that the car isn't level. You measure the crank/trans and find that it's -2 (down from level). Following the theory outlined in post #8, the pinion angle should be sitting in the -5 (down from level) deg range, the difference being 3 degrees down at the pinion, OVERALL.
Last edited by gMAG; 02-06-2011 at 07:00 PM.
