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What is the pinion angle ? #1000414 05/26/11 06:12 PM 05/26/11 06:12 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman OP pro stock
Wedgeman OP pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	What is the correct pinion angle on a A-body with SS spring ? Dan

Re: What is the pinion angle ? [Re: Wedgeman] #1000415 05/26/11 06:15 PM 05/26/11 06:15 PM
Joined: Feb 2007 Posts: 1,608 fresno ca M mikeysmopars top fuel
mikeysmopars top fuel M Joined: Feb 2007 Posts: 1,608 fresno ca	4 DEGREES AUTOMATIC 6 DEGREES 4 SPEED ??? Founder and CEO of the Central Valley Mopar Drag Pack

Re: What is the pinion angle ? [Re: mikeysmopars] #1000416 05/26/11 06:21 PM 05/26/11 06:21 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman OP pro stock
Wedgeman OP pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	Nose down ? 4 deg from the level or the difference between the angle of the drive shaft ?

Re: What is the pinion angle ? [Re: Wedgeman] #1000417 05/26/11 07:57 PM 05/26/11 07:57 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	ss springs are supposed to be 7� nose down pinion in relation to tranny output shaft. here we go!!!!!! for what is the good life if not doing things thoughtfully?

Re: What is the pinion angle ? [Re: maximum entropy] #1000418 05/26/11 08:07 PM 05/26/11 08:07 PM
Joined: Jul 2009 Posts: 694 Michigan S Super Scamp mopar
Super Scamp mopar S Joined: Jul 2009 Posts: 694 Michigan	Quote: ss springs are supposed to be 7� nose down pinion in relation to tranny output shaft. here we go!!!!!! HERE WE GO !!!!!!!!!!!!!! CAR ON THE GROUND 6 TO 7 DEGREES DOWN AND NEVER LOOK BACK. NEXT EXPERT 6652678-P1200101.JPG (397 downloads) Just One Man's Opinion Mopar Mafia Racing

Re: What is the pinion angle ? [Re: Wedgeman] #1000419 05/26/11 09:11 PM 05/26/11 09:11 PM
Joined: Aug 2003 Posts: 43,872 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,872 Bend,OR USA	Quote: Nose down ? 4 deg from the level or the difference between the angle of the drive shaft ? The way the driveshaft angle was defined by the Chrysler engineers in the old drag seminars was the difference between the pinion angle(with it nose down) and the driveshaft angle If the driveshaft angle is set at 90 degrees on your angle finder (pointer straight up) then the pinion angle should be 83 degrees nose down to get 7 degrees difference, if looking from the side of the car towards the angle finder, it will be 83 degrees one way and read 97 degrees the other way Chrysler never really discussed the trans angle in the seminars(3 or 4) I attended back in the dark ages before the internet You will hear a lot of discusions on pinion angle on this forum based off of the trans angles in relation to the pinion angle Here we go agian , QUICKTREE where are you Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: What is the pinion angle ? [Re: Cab_Burge] #1000420 05/26/11 10:47 PM 05/26/11 10:47 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman OP pro stock
Wedgeman OP pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	Thanks for the infos guys... Always back to basics! Dan

Re: What is the pinion angle ? [Re: Wedgeman] #1000421 05/26/11 10:57 PM 05/26/11 10:57 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	Pinion snubber, caltrac, ladder bar or nothing? they all take something different. BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: What is the pinion angle ? [Re: bigtimeauto] #1000422 05/26/11 10:59 PM 05/26/11 10:59 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Mopar Performance

Re: What is the pinion angle ? [Re: moparniac] #1000423 05/27/11 11:47 AM 05/27/11 11:47 AM
Joined: Jan 2005 Posts: 3,699 Newport, Mi Evil Spirit master
Evil Spirit master Joined: Jan 2005 Posts: 3,699 Newport, Mi	I don't agree that 0* is the optimal operating angle. Vibration and power wise - certainly. But a u-joint needs 1-2* of operating angle to keep the joints from brinnelling, and that small amount will not cause a loss of power or vibration. Free advice and worth every penny... Factory trained Slinky rewinder.........

Re: What is the pinion angle ? [Re: Evil Spirit] #1000424 05/27/11 12:53 PM 05/27/11 12:53 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	0� is the optimum operating angle under full acceleration, hence the 7� nose down pinion angle. 7� is the typical amount of rear axle housing rotation under full acceleration with ss springs. 0� between the output shaft of the transmission and the pinion. the output shaft angle plays an equal role in determining pinion angle. pinion angle can be adjusted using the output shaft as well as the differential housing. remember to have the suspension loaded as well. if the angle is set without considering output shaft angle, your actual pinion angle will likely be incorrect. for what is the good life if not doing things thoughtfully?

Re: What is the pinion angle ? [Re: maximum entropy] #1000425 05/27/11 01:23 PM 05/27/11 01:23 PM
Joined: Jan 2005 Posts: 3,699 Newport, Mi Evil Spirit master
Evil Spirit master Joined: Jan 2005 Posts: 3,699 Newport, Mi	You can take the driveshaft, stick it in a hole and mount your mailbox on it for all it affects PINION ANGLE. Pinion angle is the angle of the centerline of the engine/trans compared to the centerline of the pinion. You want these centerlines parallel under power. About 1-2*'s of u-joint angle helps joint life. This has been beat to death before - the driveshaft doesn't even have to be in the car to check or set pinion angle. Free advice and worth every penny... Factory trained Slinky rewinder.........

Re: What is the pinion angle ? [Re: Evil Spirit] #1000426 05/27/11 01:27 PM 05/27/11 01:27 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	Quote: You can take the driveshaft, stick it in a hole and mount your mailbox on it for all it affects PINION ANGLE. Pinion angle is the angle of the centerline of the engine/trans compared to the centerline of the pinion. You want these centerlines parallel under power. About 1-2*'s of u-joint angle helps joint life. This has been beat to death before - the driveshaft doesn't even have to be in the car to check or set pinion angle. WINNAH!!!! for what is the good life if not doing things thoughtfully?

Re: What is the pinion angle ? [Re: maximum entropy] #1000427 05/27/11 01:48 PM 05/27/11 01:48 PM
Joined: Mar 2003 Posts: 2,555 PA moparacer master
moparacer master Joined: Mar 2003 Posts: 2,555 PA	Quote: the driveshaft doesn't even have to be in the car to check or set pinion angle. X1000!! 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 5.44-126 414 cid SB Dragster 7.65-174

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