Question is this a TH350 or Th400

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Dec 5, 2001 | 12:18 PM

BeachinVette

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Drifting

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From: Elyria Ohio

Question is this a TH350 or Th400

Here is the numbers stamped in. 338999
Thank you in advance

Dec 5, 2001 | 01:44 PM

jerryp58

Melting Slicks

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Re: Question is this a TH350 or Th400 (76 Red)

I don't know about the numbers, but, FWIW, if nothing else the pans should be different. 400 is square (I think). 350 is a square with a corner clipped off.

Dec 5, 2001 | 02:12 PM

Tom73

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From: NM

Re: Question is this a TH350 or Th400 (76 Red)

Here are the pan shapes:

tom...

Dec 5, 2001 | 02:13 PM

lars

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Joined: Aug 1999

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From: At my Bar drinking and wrenching in Lafayette Colorado

Re: Question is this a TH350 or Th400 (76 Red)

Check the pan. The 350 pan is a square with a 45-degree corner. The TH400 has an odd-shaped, "organic" shape to it. Also, the 350 has a kickdown cable that comes out of the transmission near the dipstick tube - the TH400 has no kickdown cable. The TH400 has an electrical connector on the driver's side for electrical kickdown - the TH350 has no electrical hookups.

Dec 5, 2001 | 03:16 PM

BeachinVette

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Drifting

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From: Elyria Ohio

Re: Question is this a TH350 or Th400 (76 Red)

Thankyou very much all. i have a 350. I am replacing all the seals and foilter and pan gasket.
Thanks again
Bob

Dec 5, 2001 | 03:36 PM

Alwyn678

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From: Thomson Georgia

Re: Question is this a TH350 or Th400 (76 Red)

What was stock in a 74??

Dec 5, 2001 | 03:44 PM

Tom73

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From: NM

Re: Question is this a TH350 or Th400 (Alwyn678)

Quote:

What was stock in a 74??

400

tom...

Dec 5, 2001 | 03:48 PM

Paul L

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From: Ontario

Re: Question is this a TH350 or Th400 (Tom73)

May I assume the 400 is stronger since it was used on a BB?

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Dec 5, 2001 | 04:07 PM

Tom73

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From: NM

Re: Question is this a TH350 or Th400 (paul79)

Quote:

May I assume the 400 is stronger since it was used on a BB?

The 400 is a stronger trans then the 350 (but the 350 can be built to take almost anything). The 400 was used on small block and big block Vettes from 68 till around 75 or 76 when the 350 was introduced on the base engine and then a couple of years later was used on all engines.

tom...

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