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Jan 3, 2009 | 06:56 PM

blockheadnic

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From: Dayton Ohio

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I am curious what my Th400 came out of.
The tag says 455 CA-67-51291

Jan 4, 2009 | 10:48 AM

tptransmission

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From: Az

I'll take a stab at it. It appears to be from a 1967 chevy with big block engine. Although the "455" does not match any Julian date.

Jan 4, 2009 | 01:24 PM

blockheadnic

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From: Dayton Ohio

Quote:

Originally Posted by tptransmission

I'll take a stab at it. It appears to be from a 1967 chevy with big block engine. Although the "455" does not match any Julian date.

So would it be a good choice to rebuild. Its a short tail shaft with slip yoke.
So 455 is a date not a engine?

I was told it came out of a station wagon but he wasnt 100%

Jan 4, 2009 | 03:30 PM

FLT

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Just about any th400 would be a good choice to build. The obvious thing to look at is that the unit has a good case with good internals. In most cases you will want to make sure that you have a sprag style direct drum when building the unit and also an output shaft that uses a slip yoke. Other than that they are all pretty much a good candidate. Vince

Jan 4, 2009 | 05:58 PM

blockheadnic

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Quote:

Originally Posted by Vince @ FLT

Well i was told that mine may have a planetary with 4 gears vs 3. if you understand what i mean.

I dont know about the sprag. got any pics to tell the difference.

I have two 400s and both look good.

Jan 4, 2009 | 08:50 PM

FLT

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I have never seen a 400 with a 3 pinion gear planet. I will have to look through my photo's to see if I have a picture of a sprag style drum vs the spring and roller style.

Jan 4, 2009 | 09:04 PM

tptransmission

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From: Az

There has not been a three pinion gearset in a 400. Below is a nice overview of the difference from another LS1 Tech user.

http://www.hotrodders.com/forum/th40...cs-145318.html