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Cast iron T-10 Transmissions in '66 G.T.350's

Started by 6s1802, July 12, 2019, 12:23:50 AM

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acman63

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
SAAC Concours Chairman

Owner Shelby Parts and Restoration Since 1977

SAAC original first year member

greekz

6S1134 has a aluminum case and cast iron tail.  Have not checked the date code in a while.

Greek
SFM 6S1134  '67 GT-350 #2339

Sfm6sxxx

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.

6S1114

s2ms

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.
Dave - 6S1757

rraceme

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
SFM 6S2227

Tomdeg

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?

Rocket

6S550 has aluminum case and tail shaft housing. Ron
Original owner of 6S550. Owned since 1967. 64,000 Miles, all body original except hood and front valance. All glass original except windshield. Still has aluminum 4 speed. Has replacement Mico.  Also own 1966 Mustang convertible. They are drivers, not trailer queens.

jk66gt350

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

Tomdeg

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.

jk66gt350

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.

s2ms

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
Dave - 6S1757



jk66gt350

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  *

papa scoops

1122 has iron case and tailshaft. orig to car (except hurst shifter) car was feb 66 at ford, and shelby.