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Old 09-27-2018, 07:27 PM   #1
dtkarst
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Factory th400 transmission

I’ve skimmed the posts on here about it but I was curious on whether or not a factory 400 transmission was available behind a factory 327 in a 1/2 ton pickup. Looking at one and was curious if it was possible in a 1/2 ton or if it was a 3/4 ton and up option. Gear indicator shows park R N D L1 L2. Just was curious on if possible and roughly an amount built with them. Thanks
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Old 09-27-2018, 11:56 PM   #2
Captainfab
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Re: Factory th400 transmission

I've never seen a factory installed TH400 in a C10, only in the C20's. But that doesn't mean it didn't happen.
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Old 09-28-2018, 03:01 AM   #3
aotte1
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Re: Factory th400 transmission

Reported here that it was a possible option. GM Heritage Center should provide an answer under vehicle kits. Will need to look 66’ with factory turbo 400, shift indicator. The one you reported, maybe for 67’ up trucks- not sure.

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Old 09-28-2018, 10:57 AM   #4
LostMy65
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Re: Factory th400 transmission

The guy here that had a factory roller cam most likely had a factory th400 in his c10.
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Old 09-28-2018, 05:35 PM   #5
vin63
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Re: Factory th400 transmission

I think the TH400 was introduced in model year 1964 for Cadillac and Buick, then the following year for Olds and Pontiac. I don't think the TH400s were used in trucks until the 1970s.
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Old 09-29-2018, 01:03 AM   #6
Captainfab
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Re: Factory th400 transmission

I have seen a few '65-'66 C20's with TH400's from the factory. One was a '66 GMC that came from the factory with a V6 and TH400.
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Old 09-29-2018, 02:48 AM   #7
oem4me
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Re: Factory th400 transmission

For 1966, the three speed automatic was not listed as optional equipment for C10, as it was for C20.
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Old 09-29-2018, 08:46 AM   #8
vin63
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Re: Factory th400 transmission

Yep, not in the half-ton/C10s until the '70s.

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Originally Posted by oem4me View Post
For 1966, the three speed automatic was not listed as optional equipment for C10, as it was for C20.
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Old 09-29-2018, 08:54 AM   #9
Pontiacgurudan
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Re: Factory th400 transmission

Quote:
Originally Posted by LostMy65 View Post
The guy here that had a factory roller cam most likely had a factory th400 in his c10.
That's funny right there...
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Old 09-29-2018, 03:31 PM   #10
The Rocknrod
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Re: Factory th400 transmission

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Originally Posted by Pontiacgurudan View Post
That's funny right there...
X2
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Old 09-30-2018, 06:50 PM   #11
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Re: Factory th400 transmission

1967 is the first TH400 in a C10 , not available in 66 for C10
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