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Yeah, I know... Speedo pinion #s AGAIN!!?? #971480
04/11/11 08:41 PM
04/11/11 08:41 PM
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog Offline OP
Striving for excellence
Kern Dog  Offline OP
Striving for excellence

Joined: Feb 2010
Posts: 18,493
Granite Bay CA
The page in the Moparts archives do not show the 3.23 ratio, only 3.21. I am trying to determine the correct pinion for my car. Who has the info?
28" tire, 3.23 gear. I HAVE a 30 and a 33. After that its 25/27/29/34/37. I COULD slip in the 30 and be pretty close, but with an 800 mile round trip coming up, an accurate speedo/odometer would be nice. The COPS might appreciate it as well. Thanks guys!

Re: Yeah, I know... Speedo pinion #s AGAIN!!?? [Re: Kern Dog] #971481
04/11/11 09:05 PM
04/11/11 09:05 PM
Joined: Apr 2010
Posts: 1,216
Under My Car
Mopar_Country Offline
pro stock
Mopar_Country  Offline
pro stock

Joined: Apr 2010
Posts: 1,216
Under My Car
Should be 31 green.

Re: Yeah, I know... Speedo pinion #s AGAIN!!?? [Re: Kern Dog] #971482
04/11/11 09:16 PM
04/11/11 09:16 PM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
R

Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
I put a piece of stock across the top of a rear tire and measure my actual dia to the pavement and w the ratio known, picked the pinion from the MP archives chart and it made my odo and speedo dead on. Checked the odo on the interstate mile markers and the speedo at a digital road side sign. The odo can be spot on w the correct pinion and the speedo still off if the magnetic speedo gismo is not calibrated right & luckily mine was (& most are)


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