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New vs. old transmission

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Old May 26, 2003 | 04:39 PM
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1969Vette383's Avatar
1969Vette383
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Burning Brakes
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Joined: Mar 2002
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From: Lewiston, Maine
Default New vs. old transmission

Hopefully I have a quick question. I'm planning on installing a T56 into my 1969 coupe that currently has an M21. I just recently (earlier this year) bought a dual friction clutch (10 spline 11") for that transmission. Please don't tell me I need another clutch for the T56. Though if you absolutely must, tell me that someone on the forum will take a barely used (under 100 miles; not even broken in) CFII from me for 70-80% the cost of a new one.

Are there different models of T56 transmissions out there that use different clutch sizes? I would guess a Viper T56 wouldn't be the same as an F-body or Y-body T56 as they're different makers and have different power outputs.
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Old May 26, 2003 | 05:02 PM
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John W's Avatar
John W
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From: Allen TX
Default Re: New vs. old transmission (1969Vette350)

The standard Fbody T56 installation uses a hydraulic pull type pressure plate, whereas you '69 has a mechanical push type. The f-body and viper trannies had several differences like the length of input shaft, etc.I believe that there are aftermarket plates that allow the mating of the F body T56 and a standard type clutch and bellhousing. Clutch size will be dependant on bellhousing/flywheel size.

I just did a quick search and came up with the following link, I don't think that you can buy the important pieces like the adapter plate separatelt though.
http://www.sallee-chevrolet.com/BorgWarner/bwt56.html

See ya,
John

[Modified by John W, 10:03 PM 5/26/2003]


[Modified by John W, 7:38 PM 5/27/2003]
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