47-55.1 Upper Radiator support bracket - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Nima · 05-26-2022, 03:34 PM

Hi:

I am replacing my radiator as part of my LS swap project. My stock GMC radiator has side mount fill versus this new one (I assume is for Chevy) is top mount fill. So, Not only I have bring the radiator down for upper bracket to clear the radiator cap, but it seems I have to cut the bracket to be able to open and remove the radiator cap in the future. I was wondering if the Chevys' upper radiator bracket is different, since to my understanding is that GMC radiators are the only ones with side fill. Pictures would be great.
Thanks

**mr48chev** · 05-26-2022, 07:47 PM

We have to see good photos of this and Brand and part number of the radiator won't hurt as it will help one of us figure it out.

Nima · 05-26-2022, 09:05 PM

Okay, this may make it a little complicated!
I am moving the radiator outside (toward the front) of the rad support to have more clearance for Ford Taurus fan and other accessories. That is what you see in the picture but regardless, the upper support would hit the top fill cap. I just want to know if there is an easy way of just buying a chevy upper support or if I should just go and make my own. I know that I have to trim the corners as well.
The radiator brand is Mishimoto and this is the link:
https://www.mishimoto.com/chevrolet-...ml#prettyPhoto
Thanks

**mr48chev** · 05-27-2022, 12:42 AM

The Chevy radiator (it appears to be rather than having a GMC filler neck on it) was never going to work right on the GMC anyhow.

The cure is to leave that cap on or a low profile cap and run an inline filler neck in the upper hose. https://www.ebay.com/itm/131638888119

The correct GMC radiator sets further forward with it's mounting brackets Than a Chevy radiator does. Similar to this one https://www.ebay.com/itm/33437238711...gAAOSwRO1iIB0O

You can see how the Champion made for a GMC moves the core forward over 1/2 inch. https://www.ebay.com/itm/29429804268...cAAOSwX7FicQ2S

Nima · 05-27-2022, 09:50 AM

Thank you for all the information. Very helpful.

05-26-2022, 03:34 PM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,179	Upper Radiator support bracket Hi: I am replacing my radiator as part of my LS swap project. My stock GMC radiator has side mount fill versus this new one (I assume is for Chevy) is top mount fill. So, Not only I have bring the radiator down for upper bracket to clear the radiator cap, but it seems I have to cut the bracket to be able to open and remove the radiator cap in the future. I was wondering if the Chevys' upper radiator bracket is different, since to my understanding is that GMC radiators are the only ones with side fill. Pictures would be great. Thanks __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

05-26-2022, 07:47 PM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,718	Re: Upper Radiator support bracket We have to see good photos of this and Brand and part number of the radiator won't hurt as it will help one of us figure it out. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

05-26-2022, 09:05 PM	#3
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,179	Re: Upper Radiator support bracket Okay, this may make it a little complicated! I am moving the radiator outside (toward the front) of the rad support to have more clearance for Ford Taurus fan and other accessories. That is what you see in the picture but regardless, the upper support would hit the top fill cap. I just want to know if there is an easy way of just buying a chevy upper support or if I should just go and make my own. I know that I have to trim the corners as well. The radiator brand is Mishimoto and this is the link: https://www.mishimoto.com/chevrolet-...ml#prettyPhoto Thanks Attached Images __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

05-27-2022, 12:42 AM	#4
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,718	Re: Upper Radiator support bracket The Chevy radiator (it appears to be rather than having a GMC filler neck on it) was never going to work right on the GMC anyhow. The cure is to leave that cap on or a low profile cap and run an inline filler neck in the upper hose. https://www.ebay.com/itm/131638888119 The correct GMC radiator sets further forward with it's mounting brackets Than a Chevy radiator does. Similar to this one https://www.ebay.com/itm/33437238711...gAAOSwRO1iIB0O You can see how the Champion made for a GMC moves the core forward over 1/2 inch. https://www.ebay.com/itm/29429804268...cAAOSwX7FicQ2S __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

05-27-2022, 09:50 AM	#5
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,179	Re: Upper Radiator support bracket Thank you for all the information. Very helpful. __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner



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