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Author Topic: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10  (Read 4660 times)

Offline heathershubby

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How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« on: February 25, 2009, 01:29:32 pm »
Hello everyone new guy here so be easy on me.  I have a 1978, k10, Reg. Cab, longbed that I use mainly as a farm truck.  My tranny is slipping and I want to replace it with a rebuild but I don't know how to find out which tranny I need.  I have good reason to believe my truck has been pieced together so I don't trust the VIN#.
Where, or is there a place on the Engine, Tranny, and Tcase I can look to see what exactly I have?  I was told by the person I bought it from it had a 350 but how do I know for sure. It would probably be easier just to find another truck for what it would cost to replace everything but I love the body style, and the truck and don't mind working on it.  Thanks for the help.
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Offline frogman68

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #1 on: February 25, 2009, 01:42:14 pm »
look at the tranny pan
which one is it ?


transfer case should have a tab on it you can  see looking from the rear forward most have a red band on em (the tab)
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Offline heathershubby

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #2 on: February 25, 2009, 01:48:58 pm »
Thanks! Is there away to find out what Tcase I have if I don't have a tab on it?  I can't go look and see right now but I will when I get home.
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Offline fitz

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #3 on: February 25, 2009, 02:29:08 pm »
Welcome to the site. As far as the transfer cage goes:
205- Cast iron.
203- Cast iron with an aluminum section for the output shaft.
208- Aluminum.
Do you have any pictures of the t-case or the shifter?
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Offline Captkaos

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #4 on: February 25, 2009, 02:33:58 pm »
« Last Edit: February 25, 2009, 02:35:43 pm by Captkaos »
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Offline heathershubby

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #5 on: February 25, 2009, 02:47:44 pm »
Thanks, I don't have any pictures right now of the Tcase but I think I can identify the Tranny and Tcase by the info provided. Now I need to identify what Engine it is, it'll be going out next, thanks for the help.
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Offline Captkaos

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #6 on: February 25, 2009, 03:59:13 pm »
Any SBC engine will replace the current one regardless of size.  The only gotchas are some 305's and the 87-up one piece rear main.
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Offline hotrod24

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Re: How do I find out what Transmissiom, Tcase, and Engine I have in my 78 K10
« Reply #7 on: February 25, 2009, 09:55:36 pm »
here is some links that will help you out if you have not found out what the transfercase and engine is but i have a 78 k10 to and i am going through the samething  ;)

what part of north carolina you from?

http://www.chuckschevytruckpages.com/drivetrains.html 

http://www.mortec.com/location.htm
« Last Edit: February 25, 2009, 10:02:33 pm by hotrod24 »
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