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Discussion Starter · #1 ·
Ok, here's the deal...

I have a T10 out of a 63 corvette in my 69 chevelle. I just ordered a small blue driven gear. But when I went to install a plug in the hole, I found it feels like there is no drive gear on the output shaft. It's just smooth metal.

What Drive gear do I need??? Is it the same as a muncie?? I know for a muncie it would be an 8 tooth big gear, but I don't know the part number.

Also is there a number for the retainer??

Thanks
 

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Discussion Starter · #3 ·
That is perfect!! I saved that to hard drive. Thanks Mike!!

One last thing, How does the gear stay on the shaft?? Is it press fit, or does it have a retainer of some kind?
 

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Appears to be A2 & A5 per the booklet.
It's been quite a while since I've been into one.
See if Wally or Tom have any more info.
 
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Appears to be A2 & A5 per the booklet.
It's been quite a while since I've been into one.
See if Wally or Tom have any more info.
The circle gear and drive gears and the speedo bullit are all the same for a muncie, T10, and I think the ST-10
 

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Discussion Starter · #9 ·
Thanks guys, Am going to try and order the steel gear tomorrow. I believe it will even swap into my original muncie when I get the funds to rebuild it.

If somebody would need numbers for future reference here are some

Speedometer Circle Gear
L6T steel: 1.92" OD 3845079 3845079
L8T steel: 1.76" OD 3708145 T10-169
L8T steel: 1.84" OD 3708144 T10-169B
A3 Speedometer Pencil Gear
L20T steel (1957-60) 3845071 3845071
L20T steel (1961-63) 3860329 3860329
NOTE: these TWO (2) gears used with 1.92" outside diameter circle gear.

L22T green nylon (1957-60) 3708699 3708699
L22T green nylon (1961-63) 3860345 3860345
L23T black nylon (1961-63) 3860346 3860346
L24T yellow nylon (1957-60) 3708143 3708143
L24T yellow nylon (1961-63) 3860347 3860347
L25T orange nylon (1961-63) 3860348 3860348
NOTE: these SIX (6) gears used with 1.76" outside diameter circle gears.

L17T purple nylon (1961-63) 3987917 3987917
L18T brown nylon (1961-63) 3987918 3987918
L19T natural nylon (1961-63) 3987919 3987919
L20T blue nylon (1961-63) 3987920 3987920
L21T red nylon (1961-63) 3987921 3987921
L22T silver nylon (1961-63) 3978922 3978922
NOTE: these SIX (6) gears used with 1.84" outside diameter circle gears.
 
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