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Nov 14, 2013 | 08:08 AM

Olds442redberet

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Posts: 3,079

From: Birmingham, Alabama

Calling all experts

I need help identifying my T400 tranmission. I am betting it isn't original.

What am I looking for when looking at a 1970 442 T400?

Thanks

Nov 14, 2013 | 08:14 AM

Stefano

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Joined: Nov 2011

Posts: 1,786

From: Land of Lincoln

The VIN stamped into the trans is a key identifier and the trans tag will have an application code as well as a production number sequence.

Nov 14, 2013 | 08:15 AM

Olds442redberet

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From: Birmingham, Alabama

What application code should I be looking for?

Nov 14, 2013 | 08:17 AM

StickW31

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Joined: Mar 2008

Posts: 823

From: Meriden CT

"og"

Last edited by StickW31; Nov 14, 2013 at 08:18 AM. Reason: wrong number

Nov 14, 2013 | 08:21 AM

72 w29 all green

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Joined: Aug 2010

Posts: 349

From: Hague, VA...1-1/2 hours from modern society

The bottom left corner of tag will have a 70 for 1970 and an OG. The pic shows an OC (different application), but this should help you figure it out.

e30e7d6e-23ed-4b94-b7e5-67416a11e811.jpg

Nov 14, 2013 | 08:43 AM

Olds442redberet

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Posts: 3,079

From: Birmingham, Alabama

Cool! Now I know it's not the original transmission.

What's my best option? Look for another 442 to part out for the transmission? Beef up the T400 I already have? ???

Nov 14, 2013 | 10:13 AM

64Rocket

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Posts: 2,384

From: Union City Calif.94587

Beef up what you have....

Gene

Nov 14, 2013 | 10:30 AM

GAOldsman

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Joined: Feb 2011

Posts: 5,191

From: Perry, GA

The TH400 is a fairly strong transmission and can handle upwards of around 500 ft lbs of torque or more. Unless you plan on racing, I would just rebuild it if needed.