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The Cars => 1966 Shelby GT350/GT350H => Topic started by: 6s1802 on July 12, 2019, 12:23:50 AM

Title: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: 6s1802 on July 12, 2019, 12:23:50 AM
Anyone know if late 66's had all iron T-10's and if so around what number may have been the transition from aluminum and iron to all iron transmissions.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: sfm5s081 on July 15, 2019, 12:12:12 AM
Weren't all T10s aluminum?
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: 6s1802 on July 15, 2019, 12:42:18 AM
All 1965 G.T.350 transmissions were aluminum. In 1966 San Jose began to run out of the aluminum cases and mixed iron cases with aluminum tail shafts. I verified for my serial number 1802 I should have a iron main case and aluminum tail shaft.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: s2ms on July 16, 2019, 12:12:19 AM
6S1757 is still running the original all cast iron close ratio T-10. Assembly date is C162....March 1st, 1966, 2nd shift.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: jk66gt350 on July 16, 2019, 08:16:50 AM
I've never seen the assembly date on my T-10.  Where would that be located ?
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Brant on July 16, 2019, 11:05:21 AM
Quote from: s2ms on July 16, 2019, 12:12:19 AM
6S1757 is still running the original all cast iron close ratio T-10. Assembly date is C162....March , 1966, 2nd shift.

6S1732 also has it's original all cast iron close ration T-10 with the same date as 6S1757.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Brant on July 16, 2019, 11:17:22 AM
Here is the original transmission from 6S933...aluminum main case and cast iron tail housing.

This also shows the location of the assembly date.

(https://lh3.googleusercontent.com/Wstio4gWqYSXaj3H76XR3tIGqnKV-f-pTBkFCdpaUM6ShoSko_tnIIbncZCIE_05wk17YqgpozCNugRvaWcsOhKkb4jkH2xgzkdrutP9gAlEx6Rrp7VkLZWHE-5N7PWaIsTWqYp8WK8-T3Y1RZtOQLx-TqtOhEvwfgkdYpj165mcGSDscAMSmtZpFOUkRuxFaPZZrwYWZwj4i2tCnXVckkHPFWlnJWuPXtz7Cx7pyBzWMCLBDyKrdyL_1fkNOh7momkC38vI4NkF7V-r5CoswhLZzu8GUiikDPr2loG5Wu8CGWmpNHjkr-DcLjltsx9YnrZ2fEUWgBIXf5bhtHmzYLArd1KbTpCRZsP3QB0Ksgyacr_ZEvFFlttm3a6TGeCHuHr7dRVjC4ViGXLIO44AmP6JncYf6D6y8pujJcso1plW9xlunHNwidJ-COuiTTZEd74MdQtyFTvXx_kwW6_fKn68xzxsvdId-Cbr4WZFBI02wOK0Q_m40bBWZZVVugZpVnN4R01s_5p7lW2Rh7OV4oRaINF4hvHwz6_-Z8rySGWK8PlbKKa1yh_c1IzrS-lp7BEbxfh1E5UP74wzO5lTvHut5PC0kMxbcnyWDuRTkDUr9oT-dZBQjZcUhkoESaTcQO-YONQ9IepWPZESL9FcbtKbVYSy3-J1=w600)
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: jk66gt350 on July 16, 2019, 11:20:12 AM
Thanks Brant - will have a look for mine the next time I'm under the car.   
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: werthie on July 16, 2019, 03:07:15 PM
hi brant . . . can you please de-code the assembly date stamp?
thanks,
alan
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: kingchief on July 16, 2019, 04:10:14 PM
Any markings on the cast iron tail assembly?

Steve
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Brant on July 16, 2019, 05:50:51 PM
Quote from: werthie on July 16, 2019, 03:07:15 PM
hi brant . . . can you please de-code the assembly date stamp?
thanks,
alan


Alan,

The picture of the transmission that I posted has a assembly date stamping of "A1462"

A   = January
14 = 14th day of that month
6   = 1966
2   = Maybe a shift number (?)
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Brant on July 16, 2019, 05:56:20 PM
Quote from: kingchief on July 16, 2019, 04:10:14 PM
Any markings on the cast iron tail assembly?

Steve

Some of them do. In my example from 6S933, the cast iron tail housing is stamped "L 20 65"

L =  December
20 = 20th day of that month
65 =  1965

(https://lh3.googleusercontent.com/G_gU8P4QqOOdzw-1COP1Oa7PZxX9O3SoJAtw2n7CxwosbRxPvD_pGdc-LahY0iR0_XsXUiBQz8lYi_RsUMGdnWxZ-YSHSMip7q8qN3iHPGV7JjHUraoy9OzrN1mt6Tnx5hzvPycd3v4kAmMIuK7R5MKBtqA3baY-cFomgE6LQq-XsOAxhh80iz4ZRIb1FTHogru3-MA0Bj_dqleuIjkP0HUu0-08NMhIifLz-9idCLpLBLm8on_Y6EEt6wIwY_7kuu8s4DvWFWMaL45BJMdiPaaBHdypy8oGA40xirBvTYUUw1hjMu7v1qvmFavExPo0v-P_yGNBKCCgTM_7pAv1BJLkbu4sQ5GuckqcbkxOC1frGLXQDlvgzjpHsGOhm_Hm1nasbKSI2ZV0_-9uDLz3907sqCeFyn-5N5oszaBlUiNW2PBwsGsa-y1_r9rzw4m9GNGtqwSikhM9A86SlxnVx8KC131VeWCGxsLJwcUug2AYNAM0isoJ59mSCih1RnssKEUUQub6niKUfDMGfNogRXlv_s0ct_M0ytnm2DgBgRBh_XaStz67cvKvKOCQQ4SVIgXo-nE3KRUuelY0Vi7HF9E03RNiMp-GwMZFqWPy5bW_x0un7_tH2JcOm7xgpWipz6PbN3v1k0ImH6w-hv81-OyYkluf9RW8=w800-h532-no)
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: acman63 on July 16, 2019, 06:02:16 PM
From my experience they pretty much phased out the aluminum T10s right around the time that they went to under ride traction bars.  Ive seen aluminum in cars on the 1000s serial wise  and Ive seen all cast iron as low as in the 1200s. Ive never seen any factory minutes or paperwork showing they mixed and matched alloy with cast iron in the production cars but Ive seen ads for the transmissions that way .  the tailshafts were very fragile and they broke easily
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Greg on July 16, 2019, 06:39:18 PM
Quote from: acman63 on July 16, 2019, 06:02:16 PM
From my experience they pretty much phased out the aluminum T10s right around the time that they went to under ride traction bars.  Ive seen aluminum in cars on the 1000s serial wise  and Ive seen all cast iron as low as in the 1200s. Ive never seen any factory minutes or paperwork showing they mixed and matched alloy with cast iron in the production cars but Ive seen ads for the transmissions that way .  the tailshafts were very fragile and they broke easily

6S1078 has an all aluminum T10 maybe this was at the switch over point.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: jk66gt350 on July 16, 2019, 06:51:38 PM
Curiosity got the better of me so I had to have a look.  6S1575 is mid March Ford production date, T-10 main housing date is C 162 or March 1, 66 and tail housing is K 15 65 or November 15, 65.  Both cast iron.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: acman63 on July 16, 2019, 07:24:41 PM
Quote from: Greg on July 16, 2019, 06:39:18 PM
Quote from: acman63 on July 16, 2019, 06:02:16 PM
From my experience they pretty much phased out the aluminum T10s right around the time that they went to under ride traction bars.  Ive seen aluminum in cars on the 1000s serial wise  and Ive seen all cast iron as low as in the 1200s. Ive never seen any factory minutes or paperwork showing they mixed and matched alloy with cast iron in the production cars but Ive seen ads for the transmissions that way .  the tailshafts were very fragile and they broke easily

6S1078 has an all aluminum T10 maybe this was at the switch over point.


you are probably pretty accurate on that statement
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: greekz on July 16, 2019, 09:14:49 PM
6S1134 has a aluminum case and cast iron tail.  Have not checked the date code in a while.

Greek
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Sfm6sxxx on July 16, 2019, 10:39:42 PM
There was a thread a while back where there were quite a few responses for cars near Greekz's and mine (1114) that had aluminum cases and cast iron tailshafts.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: s2ms on July 16, 2019, 11:44:44 PM
Quote from: jk66gt350 on July 16, 2019, 06:51:38 PM
Curiosity got the better of me so I had to have a look.  6S1575 is mid March Ford production date, T-10 main housing date is C 162 or March 1, 66 and tail housing is K 15 65 or November 15, 65.  Both cast iron.

6S1757 original tail housing is dated K 23 65, think the "K" is actually October since I assume there would have been no "I" dated month? Looks like there may have been a batch of these all cast iron close ratio T-10's assembled on 3/1/66.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: rraceme on August 24, 2019, 10:12:32 PM
Great information. I have an additional question.  I think 67 GT350 had VIN number stamped on housing what about 1966 GT-350's? Was the VIN stamped on trannys?  thank you
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Tomdeg on October 14, 2022, 01:41:52 PM
Question for Brant, s2ms, and jk66gt350, since all of yours were assembled on March 1, are the casting dates on the case and tailshaft the same too?
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Rocket on October 14, 2022, 02:15:54 PM
6S550 has aluminum case and tail shaft housing. Ron
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: jk66gt350 on October 14, 2022, 03:13:55 PM
Tomdeg - Further to my post earlier in this thread dated July 2019, for 6S1575 the T-10 main housing date is C 162 or March 1, 66 and tail housing is K 15 65 or November 15, 65.  Both cast iron.  John
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Tomdeg on October 14, 2022, 04:06:41 PM
Hi John,
Thanks for the reply, but I was asking if the CASTING date of the main cases were all the same. I understand the ASSEMBLY date for all is C 162.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: jk66gt350 on October 14, 2022, 08:04:16 PM
Sorry for the misunderstanding.  I'm out of town for a few days and won't have a chance to have a look for the casting date until some time later next week.  I'll let you know when I get to it.
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: s2ms on October 15, 2022, 12:05:28 PM
Quote from: Tomdeg on October 14, 2022, 01:41:52 PM
Question for Brant, s2ms, and jk66gt350, since all of yours were assembled on March 1, are the casting dates on the case and tailshaft the same too?

Checked my notes and I could not find a casting date on the main case, only the tail housing. Next time I'm under the car I'll check and report if I find anything...

Dave
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: pmustang on October 16, 2022, 11:52:29 AM
2170 was Iron
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: Tomdeg on October 16, 2022, 01:16:43 PM
Quote from: pmustang on October 16, 2022, 11:52:29 AM
2170 was Iron

Is yours dated March 1st also?
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: jk66gt350 on October 29, 2022, 03:26:29 PM
Just looked at the letters / numbers on my main case and tail housing.  I assume the casting date on the main case is just to the right of the W-1, which is under WO  DIV.  It's small and very hard to make out but it appears to be *  6 1  *
Title: Re: Cast iron T-10 Transmissions in '66 G.T.350's
Post by: papa scoops on October 29, 2022, 06:07:33 PM
1122 has iron case and tailshaft. orig to car (except hurst shifter) car was feb 66 at ford, and shelby.