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Re: Speedometer gear change?
[Re: b5rr]
#938734
02/27/11 04:18 AM
02/27/11 04:18 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Not sure if '65 has changed over to the larger gears or not. The earlier ones have fewer teeth selections avail & might need to use one of those adapter gismo's that let you change the ratios w it.
live every 24 hour block of time like it's your last day on earth
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Re: Speedometer gear change?
[Re: RapidRobert]
#938735
02/27/11 08:26 AM
02/27/11 08:26 AM
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Joined: Jan 2003
Posts: 21,076 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,076
Niles , Ohio
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I know for sure the 4 speeds have the old gear style.Pretty sure the autos do also.The gears arent as avaliabe as the new style.I was looking for one for my 65 B body.The 3.23 one dosent work real well when I have the 4.88s in it.With the 3.91s I know the speedo is off about 20 percent fast.Rocky
Chrysler Firepower
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Re: Speedometer gear change?
[Re: b5rr]
#938738
02/27/11 11:24 AM
02/27/11 11:24 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Look on the side w the speedo cable and the early one has a smaller hole/assy and a flat plate that bolts it in as opposed to the '66 up one w the larger alum speedo adapter w the horseshoe clamp. That'd b a good start figuring how much error you have & if you do source the correct gear which'll make the odo correct (do measure ACTUAL tire dia w a piece of flat stock on top of the tire & measuring rollout is even better) & interstate mile markers are perfect for checking it (odo). most of the time the speedo will then also come in correct (check w digital road side speed signs)but the speedo is a sort of seperate function & if not correct the speedo head will need to go to a speedometer specialty shop to recalibrate but as you know the pinion has to have the correct teeth count 1st.
live every 24 hour block of time like it's your last day on earth
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Re: Speedometer gear change?
[Re: b5rr]
#938739
02/27/11 06:44 PM
02/27/11 06:44 PM
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Joined: Jan 2003
Posts: 25,858 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
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The '65 and earlier transmissions use the smaller pinion with a range of only 16-21 teeth.
When using a calculator, the early drive gear has 8 teeth instead of the 13 teeth on the '66 and later.
The INTERNET, the MISinformation superhighway
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Re: Speedometer gear change?
[Re: John_Kunkel]
#938740
02/27/11 06:56 PM
02/27/11 06:56 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,041
Lincoln Nebraska
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John is that tooth count the same for 904's?
live every 24 hour block of time like it's your last day on earth
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Re: Speedometer gear change?
[Re: John_Kunkel]
#938744
02/27/11 09:30 PM
02/27/11 09:30 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Thank you John, I put it in my notes
live every 24 hour block of time like it's your last day on earth
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