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what Radiator hoses should I use for a sbc 350
#1279328 Thu Sep 06 2018 03:13 PM
Joined: Oct 2016
Posts: 10
2
2xtreme Offline OP
New Guy
Hello,

I am currently rebuilding a 1954 Chevy truck with a Small Block 350 engine swap, I am at the point were I need to purchase radiator hoses, but all the research that I have done has shown me that I will need to buy 200+ Dollar hoses. If any has any ideas or knows of any place I can buy them, I would love to hear from you.

Thank you in advance

Addison


Michael
1954 Chevy Truck in process of completion
Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279343 Thu Sep 06 2018 05:41 PM
Joined: Feb 2004
Posts: 24,250
H
Kettle Custodian (pot stirrer)
That's ridiculous, and totally unnecessary. Flex hoses come in all sorts of diameters and lengths, and they work very well if you can't find a molded hose that approximates the shape you need. Another option would be to get a muffler shop to bend a piece of exhaust tubing to fit, and use short pieces of straight hose at both ends to couple up to the radiator and the engine. Paint or powder coat the outside, and the antifreeze you use will prevent rust on the inside.
Jerry


"Freedom's just another word for nothing left to lose"
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Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!

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Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279351 Thu Sep 06 2018 06:54 PM
Joined: Jun 2011
Posts: 4,452
E
'Bolter
I used Cu plumbing pipe and elbows and straight hoses on my DD 4-53T

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279363 Thu Sep 06 2018 07:46 PM
Joined: Jun 2005
Posts: 805
V
VEW Offline
'Bolter
Summit has all kinds of hoses........and many with different sized ends to accommodate your needs. I put a 350 in my 41 and kept the original radiator and found hoses that fit, from Summit.


Victor

41 3/4 Ton Pick Up (in process)
55 Grumman Kurbside (Doughboy) 235/3 on tree w/ OD
57 3100 - gone
58 C4400 Viking (Thor)
59 C4500 Short Bus (Magic Bus)
59 G3800 1 Ton Dually (Chief)


Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279377 Thu Sep 06 2018 10:32 PM
Joined: Aug 2012
Posts: 1,743
V
Shop Shark
I have these numbers in my notes for an SBC to a stock 3100 radiator.
Gates 20416 upper
Gates 20584 lower

I put a SBC in a GMC and I used a flex hose for the upper, IIRC it's 18" long with one end being 1.5" and the other 1.75".
On the GMC radiator in my 49 the bottom connection made a 90 degree turn up so I had to find a hose that was close enough with the right sizes then cut it in half and splice in a 1.5" copper 90 elbow to get it to fit. The hose was spec'd for a 78 Jeep Chrokee w/a 4.7.

Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279380 Thu Sep 06 2018 11:19 PM
Joined: Mar 2010
Posts: 926
Y
yar Offline
Shop Shark
Addison,

I found that problem is easily solved by approximating the radiator hoses you need with anything flexible that will hold its shape, like a welding rod or straightened out coat hanger, and taking those samples to a big, friendly auto parts store. Counter men/women who know you will let you rummage through their radiator hoses until you find molded hoses that are a fit.

I wish I had the computer skills to post a photo of how that worked out in finding hoses for my sbc 350 powered '32 Ford street roadster. The hoses for some other vehicles are a perfect fit in that roadster.

Good luck. You can do it!


Ray
Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279385 Fri Sep 07 2018 12:43 AM
Joined: Jun 2011
Posts: 4,452
E
'Bolter
Aren't coat hangers and welding rod he same thing?

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279403 Fri Sep 07 2018 07:24 AM
Joined: Dec 2014
Posts: 831
M
'Bolter
Originally Posted by 2xtreme

I am currently rebuilding a 1954 Chevy truck with a Small Block 350 engine swap, I am at the point were I need to purchase radiator hoses, but all the research that I have done has shown me that I will need to buy 200+ Dollar hoses. If any has any ideas or knows of any place I can buy them, I would love to hear from you.
Addison



I could give you some specific part numbers, but need to know if you're using a long water pump or short. Makes a big difference.

I just used off-the-rack Gates hoses, around $15 each.

Attached Files
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1951 Chevy Panel Truck
Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279437 Fri Sep 07 2018 03:42 PM
Joined: Jul 2006
Posts: 34
C
'Bolter
I use the carb preheat tube to get the proper shape for the hose I need and then go to the parts store and match them to a preform rubber hose. I also have bent exhaust tube to the proper shape and hose on the ends.

Re: what Radiator hoses should I use for a sbc 350
2xtreme #1279458 Fri Sep 07 2018 09:26 PM
Joined: Mar 2010
Posts: 926
Y
yar Offline
Shop Shark
"Aren't coat hangers and welding rod he same thing?"

Ed, I always heard they are the same. I never did understand why city slickers use different welding rods for different applications. Some of these fancy pants even think different rods should be used for tig, stick and oxy-acetylene welding.

Some guys just like to make things more complicated than they really are.

Oh well, whatever blows their hair back.


Ray
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