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Pinion angle question #3234829 05/25/24 08:05 AM 05/25/24 08:05 AM
Joined: Jan 2003 Posts: 5,662 Detroit area 6PAX OP master
6PAX OP master Joined: Jan 2003 Posts: 5,662 Detroit area	I am going to be setting the pinion angle on my Dart soon now that I have the engine/trans. in the car. I haven't decided yet on what size tires I'm going to run on the rear but it will be either 29x12.5x15 or 275-60-15's. How much of a role does rear tire diameter play when setting the pinion angle?

Re: Pinion angle question [Re: 6PAX] #3234842 05/25/24 09:10 AM 05/25/24 09:10 AM
Joined: Mar 2011 Posts: 3,104 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,104 Michigan	None. Pinion angle is the difference between the axle pinion centerline and the driveshaft centerline. I’m sure you will get a multitude of comments on how and what to set it to. Depends on suspension type, trans type, race or street.

Re: Pinion angle question [Re: A727Tflite] #3234843 05/25/24 09:17 AM 05/25/24 09:17 AM
Joined: Jan 2003 Posts: 5,662 Detroit area 6PAX OP master
6PAX OP master Joined: Jan 2003 Posts: 5,662 Detroit area	Originally Posted by A727Tflite Depends on suspension type, trans type, race or street. 69 Dart with MP XHD springs, 727, street driven.

Re: Pinion angle question [Re: A727Tflite] #3234924 05/25/24 04:19 PM 05/25/24 04:19 PM
Joined: Dec 2005 Posts: 11,737 Fulton County, PA C CMcAllister Mr. Helpful
CMcAllister Mr. Helpful C Joined: Dec 2005 Posts: 11,737 Fulton County, PA	Originally Posted by A727Tflite None. Pinion angle is the difference between the axle pinion centerline and the driveshaft centerline. I’m sure you will get a multitude of comments on how and what to set it to. Depends on suspension type, trans type, race or street. Correct, zero. I will withhold further comment. If the results don't match the theory, change the theory.

Re: Pinion angle question [Re: CMcAllister] #3234986 05/25/24 10:13 PM 05/25/24 10:13 PM
Joined: Jan 2004 Posts: 4,585 Motor City 6 6PKRTSE master
6PKRTSE master 6 Joined: Jan 2004 Posts: 4,585 Motor City	Also, the more power you make the more you need. Unless ladder bar or 4 linked. 1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.

Re: Pinion angle question [Re: 6PAX] #3235030 05/26/24 10:54 AM 05/26/24 10:54 AM
Joined: Jan 2003 Posts: 31,081 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,081 Oregon	Originally Posted by 6PAX Originally Posted by A727Tflite Depends on suspension type, trans type, race or street. 69 Dart with MP XHD springs, 727, street driven. For street driving you can use factory specs. You really wouldn't want to drag race much with XHD springs since they'll wrap up and beat things to death.

Re: Pinion angle question [Re: CMcAllister] #3235090 05/26/24 04:08 PM 05/26/24 04:08 PM
Joined: Jan 2003 Posts: 4,760 Moved to N.E. Tennessee GomangoCuda master
GomangoCuda master Joined: Jan 2003 Posts: 4,760 Moved to N.E. Tennessee	Originally Posted by CMcAllister I will withhold further comment. best answer. In theory, there is no difference between theory and practice. In practice, there is.

Re: Pinion angle question [Re: 6PAX] #3235100 05/26/24 05:55 PM 05/26/24 05:55 PM
Joined: Aug 2003 Posts: 43,311 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,311 Bend,OR USA	I would shoot for between 3 and 5 degrees difference between the drive shaft and the pinion shaft angles with the differences forming a V pointed up towards the floor boards with it in neutral on a very FLAT surface Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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