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Old 03-11-2016, 07:26 AM   #1
Theoriginalsilverado
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Question Transmission/Radiator Fittings

Alright guys. Quick and hopefully simple question for you- What are the sizes of the input/output on the TH350 transmission, and also my radiator (it's a 1975 Chevrolet Silverado C20 Camper special)?

The reason I ask is I'm looking to buy adapters to run 6an hose instead of the steel ones.

Thanks in advance guys
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Old 03-11-2016, 07:29 AM   #2
RodsGreen10
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Re: Transmission/Radiator Fittings

Here you go.

http://m.summitracing.com/parts/rus-...as8RoCeKLw_wcB
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Old 03-11-2016, 11:44 AM   #3
MikeB
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Re: Transmission/Radiator Fittings

Radiator fittings are probably 5/16" inverted flare with a 1/2" hex head. If so, that means the thread size is 1/2"-20. So, you'll need adapters like Russell #640330.

http://www.summitracing.com/parts/rus-640330

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1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
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1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
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Old 03-11-2016, 02:00 PM   #4
Theoriginalsilverado
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Re: Transmission/Radiator Fittings

Quote:
Originally Posted by RodsGreen10 View Post
Thanks for the help!
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Old 03-11-2016, 02:00 PM   #5
Theoriginalsilverado
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Re: Transmission/Radiator Fittings

Quote:
Originally Posted by MikeB View Post
Radiator fittings are probably 5/16" inverted flare with a 1/2" hex head. If so, that means the thread size is 1/2"-20. So, you'll need adapters like Russell #640330.

http://www.summitracing.com/parts/rus-640330

Thanks! Hopefully this fits
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Old 03-11-2016, 03:32 PM   #6
RodsGreen10
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Re: Transmission/Radiator Fittings

Quote:
Originally Posted by Theoriginalsilverado View Post
Thanks for the help!
Anytime man.
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