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#1 |
Registered User
Join Date: Jan 2019
Location: Charlotte, NC
Posts: 1
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Transmission identification
I'm trying to identify which automatic transmission is in this 1972 C20. The detents or something in the column shifter are worn out and it's gotten kind of sloppy. I'm considering trying to put a floor shifter and valve body kit in it.
![]() It sounds like this truck would either have had a TH350 or a TH400 and the one in the pic pretty much has to be a TH350, right? |
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#2 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,483
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Re: Transmission identification
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Use this chart. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#3 |
Senior Member
![]() Join Date: Mar 2015
Location: washington
Posts: 2,235
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Re: Transmission identification
Early thm350
The thm350 only had a drain plug for a few years. You will likely have fewer issues if you repair the column. The cab will stay quieter from fewer holes in it. May even be less money than the replacement floor shift. |
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#4 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,149
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Re: Transmission identification
This-agree!
__________________
'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#5 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,483
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Re: Transmission identification
Quote:
I almost posted this too. A little more detailed information on the trouble you are having would help to diagnose the problems. Is it hard to get in and out of park/reverse? LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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