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Old 08-23-2013, 11:44 AM   #1
tw09
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1969 c10 tranny swap

I'm looking for help with a transmission swap in my 69 c10. It has the 3 speed and I'm wanting to put an automatic in it. A list of everything I will need to make this as easy as possible would be awesome. Thanks.
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Old 08-23-2013, 12:29 PM   #2
PanelDeland
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Re: 1969 c10 tranny swap

WELCOME!!!! For a start,you will need a tranny and crossmember,a steering column and linkage for an auto,a trans cooler,the correct yoke for the tranny if different,and the correct speedo gears for tranny,gearing and tires.You'll also need a flexplate instead of the flywheel.You will need to remove the crossmember at the bellhousing,so you will need a grinder,drill or chisel.It's not just a simple tranny r&r.You may also have to have the driveshaft shortened.

Someone else may be along to add to the list I've given or to clarify.
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Old 08-23-2013, 12:52 PM   #3
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Re: 1969 c10 tranny swap

Thanks for the reply. I guess the main question is which transmission would be the easiest swap?
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Old 08-23-2013, 02:33 PM   #4
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Re: 1969 c10 tranny swap

You could also do a floor shift instead of steering column swap if you'd like. The big pain is the crossmembers....

It may be a bit more difficult of a swap but a built 200 4R would be great in it. You'll like the 4 speed auto better than a 3. In which case you'll need linkage for the TV cable too.

Good Luck and Welcome to the board.
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Old 08-23-2013, 02:47 PM   #5
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Re: 1969 c10 tranny swap

I am well along in a similar swap. Out with the 3 on the tree and in with a TH350. At the same time an engine rebuild and a lot of detail work under the hood. Its been a lot of work as I am trying also to make everything look original and new.

What engine is in your truck?

Somewhere here I have a thread on it, or search for my posts and you will probably find information to help you.

You are welcome to send me a message as well.

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Old 08-23-2013, 04:26 PM   #6
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Re: 1969 c10 tranny swap

BTW Look at the Lokar floor shifters for those....

Lookie here now for information.
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And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9
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Old 08-23-2013, 04:53 PM   #7
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Re: 1969 c10 tranny swap

another turbo 350 vote , about the simplest , and a great trany , they are everywhere
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Old 08-23-2013, 06:38 PM   #8
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Re: 1969 c10 tranny swap

Whatcha going to do with the 3-speed?
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Old 08-23-2013, 07:08 PM   #9
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Re: 1969 c10 tranny swap

I would agree with the 200r4 or a 700r4.You'll appreciate the added OD and there's no sense in doing it over.
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Old 08-24-2013, 12:36 AM   #10
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Re: 1969 c10 tranny swap

The 3 speed is spoken for already.. I have read that if I use a short tail turbo 350 then I can use the same drive shaft as the 3 speed with no modification.. Is this true?
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Old 08-25-2013, 04:14 PM   #11
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Re: 1969 c10 tranny swap

Anyone able to confirm that?
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Old 08-28-2013, 04:36 PM   #12
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Re: 1969 c10 tranny swap

if the short shaft T350 will work, the 200 4R will work with a yoke change. The 2 are almost the same length.
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And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9
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Old 08-28-2013, 04:40 PM   #13
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Re: 1969 c10 tranny swap

You'll also need to swap the starter or get a different nosecone to mount the starter to the block instead of the bell housing.

Don't forget to remove the pilot bushing too.
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Old 08-28-2013, 10:00 PM   #14
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Re: 1969 c10 tranny swap

Quote:
Originally Posted by PanelDeland View Post
WELCOME!!!! For a start,you will need a tranny and crossmember,a steering column and linkage for an auto,a trans cooler,the correct yoke for the tranny if different,and the correct speedo gears for tranny,gearing and tires.You'll also need a flexplate instead of the flywheel.You will need to remove the crossmember at the bellhousing,so you will need a grinder,drill or chisel.It's not just a simple tranny r&r.You may also have to have the driveshaft shortened.

Someone else may be along to add to the list I've given or to clarify.
Why a new column and linkage? Floor shifters work on automatics too!
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Old 08-28-2013, 11:11 PM   #15
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Re: 1969 c10 tranny swap

I don't know if the th350 will work.. I just read that somewhere. I guess I'll find out. And yes I'm using a floor shifter.

If anyone knows for sure if the th350 will work with 3 speed driveshaft please let me know and maybe save me some work.
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Old 09-04-2013, 10:05 AM   #16
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Re: 1969 c10 tranny swap

Just wanted to confirm that the turbo 350 will work with the 3 speed drive shaft with no modification. It was pretty much a direct bolt in after removing the 3 speed cross member.
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Old 09-04-2013, 10:32 AM   #17
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Re: 1969 c10 tranny swap

i would figure out what the rear end ratio is b4 selecting a transmission//// the overdrive trannies suggested live best with 373 or 410 gears/// turbo 350 with a 305 type gear ratio
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