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[C1] T10-1c

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Old Jul 7, 2020 | 08:43 PM
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Hey guys, I'm trying to determine the correct casting date. The pic will show a date of K 15. Since the early T10-1C cases don't have casting date info, ('60-'61??) I'm thinking this might be for the '62. I just don't know what the "early" castings were with no dates..when did they start casting the dates? Thanks for the info.
Dave

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Old Jul 8, 2020 | 01:14 AM
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I'm good with Muncie dates, but kind of weak on T-10 casting dates.
The alum case T-10 began in 61 (MAYBE, MAYBE, MAYBE late 60) and continued on until the end of T-10 production (mid-63). BUUUUUUUUUUUT, some other GM cars (ie, Buick, Pont) continued with the cast iron main case for the T-10. I have a very close cousin who has a MATCHING NUMBER 1964 Pont Grand Prix with factory air and 4sp. The 4sp in that car is a cast iron T-10.

Last edited by DZAUTO; Jul 8, 2020 at 01:15 AM.
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Old Jul 8, 2020 | 08:53 AM
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There should be more numbers on that transmission. The assembly date and vin should be stamped on upper rear corner of side cover. The S makes no sense to me as that indicates a Saginaw transmission and in 61-62 Saginaws were all 3 speeds, according to Judging Manual. More pictures would help.
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Old Jul 8, 2020 | 09:05 AM
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If your case is from a 62 Corvette a partial VIN will be stamped on the flat section to the right of the shifter cover. Next to the partial VIN is the assembly date.

On mine its W A263. Warner Gear Jan 26 3rd shift.
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Old Jul 8, 2020 | 09:18 AM
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That's the frustrating part..no stampings anywhere. The case still shows the factory "sand cast texture" where the vin should be. No bowtie on the case, but has one on the tailhousing with the dual mounting pads. (5 15 61).

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Old Jul 8, 2020 | 09:38 AM
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The T10-1C case was used in '62. If there is no assembly date stamped on it, it was probably a service replacement case. If it has an assembly date but no VIN, then it was used with a 250hp 327 in a passenger car.

The bowtie casting in the T10-1C cases started showing up in Jan '62. Since this case doesn't have one, the K 15 casting date could be Oct 15th, 1961. The casting flash has obscured the "61". But the casting does have the square were the bowtie would be, so I'm guessing it was never installed in a Chevy.
Verne

Last edited by W Guy; Jul 8, 2020 at 09:49 AM.
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Old Jul 8, 2020 | 01:17 PM
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Main case T10-1C, Extension housing T10-7D, side cover T10-148B. Same for WR and CR trans. Extension housing T10-7C used in Pontiac. DATE codes W for Warner gear, A for January, B for Feb etc. Example WC2822 = Warner 4 speed, March 28, 2= year, 2= second shift. DATE is on top of trans at left rear corner. Corvette Vin stamp also, 7 digit . first is year , second is always a 1. example 2103628 is 62 Corvette vin 03628.
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Old Jul 8, 2020 | 02:58 PM
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... Corvette Vin stamp also, 7 digit . first is year , second is always a 1. example 2103628 is 62 Corvette vin 03628.[/QUOTE]

This is a pic of my '63 T10 close ratio. Just brought it and my M-22 home from Mikes 4speeds after complete refurbishments. I believe from the stamps that this was originally installed in a corvette (since no assembly plant "letter" in the vin) and not a passenger car. I'd be interested in knowing about that particular car, RE or RF code, and if it still exists, but I'm not a member of the NCRS, yet.

Thanks again,
Dave.
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Old Jul 8, 2020 | 05:11 PM
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Originally Posted by BBDave71
... Corvette Vin stamp also, 7 digit . first is year , second is always a 1. example 2103628 is 62 Corvette vin 03628.
This is a pic of my '63 T10 close ratio. Just brought it and my M-22 home from Mikes 4speeds after complete refurbishments. I believe from the stamps that this was originally installed in a corvette (since no assembly plant "letter" in the vin) and not a passenger car. I'd be interested in knowing about that particular car, RE or RF code, and if it still exists, but I'm not a member of the NCRS, yet.

Thanks again,
Dave.[/QUOTE]

It was indeed installed in a 1963 Corvette, I had to do a double take because my 63 came to me without it's original and I'm always looking for 03139.

Your assembly date indicates W-Warner, L-November (no I used), 1-day of month, 2-1962, 3-third shift.
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