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Author Topic: Speedometer Gear  (Read 448 times)
upscope757
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Runnin' again after 27 years...

upscope757
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« on: August 30, 2013, 06:15:32 PM »

All,

I had received some info on this several months back but can't seem to locate it.

My car was a factory 12-bolt, 3:31 gears and I just pulled out the speedometer gear, red w/21 teeth, original Powerglide.

I found elsewhere that a 4:10 had 25 teeth.

I have changed out the gears to 3:73. Can I deduce then that the new speedometer gear would be 23 teeth?

Thanks,
Matt
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Matt: 1967 RS/SS - L48/Powerglide - Sierra Fawn/Beige Vinyl Top, Charleston, SC
Ed Bertrand
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« Reply #1 on: August 30, 2013, 06:30:34 PM »

Here's what the CHART shows in the P&A (scroll down to my reply number 4).

3.73 with F70-14 tires and Powerglide - 3860346 (Black, 23 teeth).

Ed
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upscope757
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Runnin' again after 27 years...

upscope757
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« Reply #2 on: August 30, 2013, 06:32:51 PM »

Thanks a million
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Matt: 1967 RS/SS - L48/Powerglide - Sierra Fawn/Beige Vinyl Top, Charleston, SC
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