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Author Topic: BW T-10 aluminum transmission case  (Read 775 times)
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no1musclecar
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« on: March 19, 2017, 02:17:49 AM »

Aloha, can anyone tell me what differences, if any, there were between the aluminum transmission cases used in the '63 1/2 Galaxie lightweights, and those used in the GT350 and Cobra applications? I have a narrow-pattern T-10 body only (no mid-plate or rear extension housing), and at some point someone ground off the casting numbers to smooth the case for polishing. As far as I know, it came from a lightweight Galaxie, but I want to make sure. Mahalo, Robert

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64 Comet B/FX (6-71 Boss 331, w HM scoop, Autolite Inline, stud-stabilizer vc, Danny Bee, BOSS T-pan, Doug Nash 5sp/Long OD, Hone-O-Drive, Winters/Moser alum 9", 6" M/T t OD, M/T 3-rib fr & mag 14" w Motor Wheel Spyders rr) w A/FX alternate (stroked 427, EFI stack inj., Edelbrock heads, C6, etc.) or
acman63
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« Reply #1 on: March 19, 2017, 08:57:01 AM »

Narrow cases T10L   only had provision for 4 mounting bolts  and had the narrow pattern only  for early FE and 5 bolt 289 Bells.  Later T10M  cases  were made for 6 Bolt 289 engines  But had mounting holes for narrow and wide pattern.  T10M  was only used on GT350

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shelrace
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« Reply #2 on: March 19, 2017, 11:05:28 AM »

The overall length and gear ratios were different as well.

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no1musclecar
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« Reply #3 on: March 19, 2017, 03:42:03 PM »

Thank you, that's all very helpful information. I still have one question. Was this case ever used for the 427 Cobra? I'm thinking not, since the 427 debuted in 1965, and by then Ford was using the wide-pattern and was also switching to the top-loader 4-speed. I'm now of the opinion the "T-10L" case was used for Galaxie lightweights and 289 Cobras only. Does this sound correct? Mahalo, Robert

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64 Comet B/FX (6-71 Boss 331, w HM scoop, Autolite Inline, stud-stabilizer vc, Danny Bee, BOSS T-pan, Doug Nash 5sp/Long OD, Hone-O-Drive, Winters/Moser alum 9", 6" M/T t OD, M/T 3-rib fr & mag 14" w Motor Wheel Spyders rr) w A/FX alternate (stroked 427, EFI stack inj., Edelbrock heads, C6, etc.) or
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« Reply #4 on: March 19, 2017, 05:03:08 PM »

Robert:  you are correct on the T10 case application. The Cobra used the long tip input shaft and the galaxy used the short tip.   other than that they are the same.  We have seen some M ratios in some of the 289 Cobra transmission  rather than the L  ratio.   the 427 Cobras used the close ratio toploader  with big input and the 28 spline output.  case and tail same as 65-68 Mustang small block

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no1musclecar
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« Reply #5 on: March 19, 2017, 05:42:49 PM »

Thanks again for clarifying that for me. It always pays to go to the experts! Aloha, Robert

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64 Comet B/FX (6-71 Boss 331, w HM scoop, Autolite Inline, stud-stabilizer vc, Danny Bee, BOSS T-pan, Doug Nash 5sp/Long OD, Hone-O-Drive, Winters/Moser alum 9", 6" M/T t OD, M/T 3-rib fr & mag 14" w Motor Wheel Spyders rr) w A/FX alternate (stroked 427, EFI stack inj., Edelbrock heads, C6, etc.) or
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