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11-11-2010, 01:31 PM
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#1 |
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Registered User
Join Date: Oct 2010
Location: North Carolina
Posts: 123
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ID a tranny
TWO sets of numbers are stamped on this tranny (Believed to be a TH350).
17L540651 and 8640300 Can anyone tell me what they mean? |
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11-11-2010, 07:52 PM
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#2 |
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is a fungineer
 
Join Date: Jan 2009
Location: Bakersfield, CA
Posts: 795
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Re: ID a tranny
8640300 is the casting number for the case. It is a T350.
__________________
2003 S10, 2.2 auto- the daily driver, currently with a 2"/2" drop and some minor engine bolt-ons 1978 Impala 2-door, race 350/T350 - the new race car, in progress 1968 Chevy C10 longbed- 3/5 drop, currently undergoing a heart transplant |
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11-11-2010, 09:21 PM
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#3 |
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Registered User
Join Date: Oct 2010
Location: North Carolina
Posts: 123
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Re: ID a tranny
This is what I have in my 64 truck, believed to have replaced the Powerglide tranny. I have heard that this tranny was quite a success for GM, but stopped it's production in the mid 1980's.
Can you shed any additional light on this tranny for me, including possibly identifying what year it is? |
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11-13-2010, 01:56 AM
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#4 | |
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Registered User
Join Date: Oct 2008
Location: Macon, GA.
Posts: 89
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Re: ID a tranny
Quote:
7= 1977 L= Van Nuys, California 540651= Last 6 digits of Vehicle Vin #. Other ID location >> http://th350.netfirms.com/pages/7a2-70.jpg http://th350.netfirms.com/pages/7a2-71.jpg |
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11-13-2010, 12:49 PM
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#5 |
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Registered User
Join Date: Oct 2010
Location: North Carolina
Posts: 123
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Re: ID a tranny
I knew the answer was "out there". Thanks very much for the reply. Any thoughts on the verification that this is a THM350?
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11-13-2010, 01:43 PM
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#6 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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Re: ID a tranny
A th350 transmission pan will have 13 bolts and be sqaure with one corner cut off. http://www.google.com/imgres?imgurl=...78&tx=71&ty=73
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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11-13-2010, 05:24 PM
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#7 |
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Registered User
Join Date: Oct 2010
Location: North Carolina
Posts: 123
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Re: ID a tranny
Description and picture fits. THM350 it is.
Others I have talked with recently have also identified it as a T350 or TH350. Is this just the same terminology for the same transmission or are there truly differences? Thanks for your help. Still trying to learn all about my "new" old truck. |
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11-13-2010, 07:00 PM
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#8 | |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: ID a tranny
Quote:
There are 4 other derivatives of the TH350...TH250, TH250C, TH350C & TH375B. |
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11-13-2010, 07:44 PM
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#9 |
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Registered User
Join Date: Oct 2010
Location: North Carolina
Posts: 123
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Re: ID a tranny
Thanks to all!!!
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