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Old 06-09-2010, 04:53 PM   #1
slick78
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tranny lines

i got 1978 c10 stepside.that im putting in a th350 auto tranny,i originaly had a 3speed manual but it gave out.my question is how long are the tranny lines that go from the tranny to the radiator?
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Old 06-09-2010, 06:08 PM   #2
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Re: tranny lines

i have no clue but ive made them with the pieces you get at the auto parts store and some unions
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Old 06-10-2010, 01:20 AM   #3
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Re: tranny lines

Try this vendor:

http://www.classictube.com/

I got replacement tranny lines from them - perfect fit. I opted to replace rather than repair the damaged lines.
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Old 06-10-2010, 05:29 AM   #4
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Re: tranny lines

I usually make mine with sections of steel brake line available at most auto parts stores. Short sections of rubber hose can be used on the ends to complete the connections.
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Old 06-10-2010, 10:26 AM   #5
motornut
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Re: tranny lines

about six feet i think,using rubber would be the weakest link,i buy a roll and make my own with double flaired fittings,but you should be able to get them that long with the fittings on it
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Old 06-10-2010, 05:21 PM   #6
slick78
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Re: tranny lines

6 feet with the bends around the frame?. yeah i found them at a local autoparts.my other question is,do i have to get an oil cooler? or just hooking them up to the radiator is fine?
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Old 06-10-2010, 07:50 PM   #7
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Re: tranny lines

Couple things:

1) Since the truck was originally stick, the radiator might not have provisions for a transmission cooler.

2) You might want to just get the lines off of a junk yard truck and clean them up, save you a lot of time and you know they will work. They also sell them new.

3) External cooler isn't needed but not a bad idea if you plan on using your truck as a truck. In my opinion its cheap insurance and getting the biggest one you can fit is a good idea
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Old 06-11-2010, 05:14 PM   #8
slick78
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Talking Re: tranny lines

thanx for all the help fellas.i found a place where to get them and they will bend them too. ill let u guys know how it went.once again thanx.
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Old 06-11-2010, 09:28 PM   #9
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Re: tranny lines

I used 3/8" NPT barb fittings in my th400 and ran rubber fuel hose up to the radiator and ive never had an issue. and that way you can run them inside the frame where you want. steel line are a PITA in my opinion.
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