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speedo pinion? #681305 04/26/10 09:54 PM 04/26/10 09:54 PM
Joined: Nov 2004 Posts: 2,234 BFE vancamp OP super street
vancamp OP super street Joined: Nov 2004 Posts: 2,234 BFE	am i right if you have 275/60/15 tires and 3.23 gears you would need a green 31 tooth speedo pinion gear correct? VanCamp Dent Systems Paintless Dent Repair/ Mopar Restification

Re: speedo pinion? [Re: vancamp] #681306 04/26/10 10:31 PM 04/26/10 10:31 PM
Joined: Jan 2003 Posts: 3,905 Minnesota 3twos master
3twos master Joined: Jan 2003 Posts: 3,905 Minnesota	How tall are the tires? You may need the 33 tooth Al & Sheila

Re: speedo pinion? [Re: 3twos] #681307 04/26/10 10:33 PM 04/26/10 10:33 PM
Joined: Nov 2004 Posts: 2,234 BFE vancamp OP super street
vancamp OP super street Joined: Nov 2004 Posts: 2,234 BFE	Quote: How tall are the tires? You may need the 33 tooth if you figure it using the chart on here it works out to be a 27.98" or 28" tire. VanCamp Dent Systems Paintless Dent Repair/ Mopar Restification

Re: speedo pinion? [Re: vancamp] #681308 04/27/10 12:19 AM 04/27/10 12:19 AM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	I'd make a mark on the tire next to the pavement then measure the rollout on the pavement which'd be ~8-9 ft or so (not sure on the rest of the formula) to get an accurate figure as you dont want to have to pull it again. live every 24 hour block of time like it's your last day on earth

Re: speedo pinion? [Re: RapidRobert] #681309 04/27/10 12:21 AM 04/27/10 12:21 AM
Joined: Nov 2003 Posts: 10,693 Surface of the Sun, AZ Hotwheelsjr I Live Here
Hotwheelsjr I Live Here Joined: Nov 2003 Posts: 10,693 Surface of the Sun, AZ	http://www.moparts.org/Tech/Archive/auto/12.html

Re: speedo pinion? [Re: Hotwheelsjr] #681310 04/27/10 03:04 AM 04/27/10 03:04 AM
Joined: Mar 2008 Posts: 38 Sharpsburg, GA R rusthole member
rusthole member R Joined: Mar 2008 Posts: 38 Sharpsburg, GA	If the 31 tooth gear is not accurate, the speedometer could be out of calibration.I had to change out my speedometer, it was so far off.

Re: speedo pinion? [Re: Hotwheelsjr] #681311 04/27/10 06:49 AM 04/27/10 06:49 AM
Joined: Nov 2004 Posts: 2,234 BFE vancamp OP super street
vancamp OP super street Joined: Nov 2004 Posts: 2,234 BFE	Quote: http://www.moparts.org/Tech/Archive/auto/12.html this is what i used to figure the 31 tooth but the chart shows 3.21 gears not 3.23??? and i just wanted to make sure i was right. VanCamp Dent Systems Paintless Dent Repair/ Mopar Restification

Re: speedo pinion? [Re: rusthole] #681312 04/27/10 06:51 AM 04/27/10 06:51 AM
Joined: Nov 2004 Posts: 2,234 BFE vancamp OP super street
vancamp OP super street Joined: Nov 2004 Posts: 2,234 BFE	Quote: If the 31 tooth gear is not accurate, the speedometer could be out of calibration.I had to change out my speedometer, it was so far off. i have not installed the 31 tooth yet thats the questuin i asked if the 31 was right with a 275/60/15 tire and 3.23 gears VanCamp Dent Systems Paintless Dent Repair/ Mopar Restification

Re: speedo pinion? [Re: vancamp] #681313 04/27/10 10:27 PM 04/27/10 10:27 PM
Joined: Jan 2003 Posts: 1,251 Slidell, LA Ronnman pro stock
Ronnman pro stock Joined: Jan 2003 Posts: 1,251 Slidell, LA	The 30 tooth gear would be closer. See below Ron 5950949-323Speedochart.jpg (77 downloads)

Re: speedo pinion? [Re: Ronnman] #681314 04/27/10 10:36 PM 04/27/10 10:36 PM
Joined: Nov 2004 Posts: 2,234 BFE vancamp OP super street
vancamp OP super street Joined: Nov 2004 Posts: 2,234 BFE	Quote: The 30 tooth gear would be closer. See below Ron I used the chart on here and it comes up with a 2838391 which is a 31, what would the speedo difference be between the 31 and 30? reason iask i have a 26,27 a 31 is on the way but dont have a 30. 5950968-Capture.JPG (31 downloads) Last edited by vancamp; 04/27/10 10:38 PM. VanCamp Dent Systems Paintless Dent Repair/ Mopar Restification

Re: speedo pinion? [Re: vancamp] #681315 04/27/10 10:51 PM 04/27/10 10:51 PM
Joined: Jan 2003 Posts: 1,251 Slidell, LA Ronnman pro stock
Ronnman pro stock Joined: Jan 2003 Posts: 1,251 Slidell, LA	The 31 will be about 2 mph lower at 2500 RPM than the 30, i.e. 58 mph vs 60 mph. Ron

Re: speedo pinion? [Re: vancamp] #681316 04/28/10 06:47 PM 04/28/10 06:47 PM
Joined: Jan 2003 Posts: 25,785 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,785 Rio Linda, CA	The actual math says you need a 30.25 tooth pinion, 30 is the closest. The INTERNET, the MISinformation superhighway

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