Radiator - Page 2 - ZR-1 Net Registry Forums

-=Jeff=- · 06-23-2017

I am using that 3 core without any issues, but yes you have to modify the shroud for fitament

Flyman 27 · 06-23-2017

Quote:

Originally Posted by secondchance

https://www.summitracing.com/parts/d...m/applications

I switched to Dewitt double row and never looked back.
Minor modification to fan shroud is necessary.

Thank you!

ssrszz4 · 07-23-2017

I installed the 2 row Dewitt now all seems normal. My old one was probably 50 percent plugs!

Sent from my XT1585 using ZR-1 Net Registry mobile app

lfalzarano · 08-20-2018

Look at a Dewitt 2 row core.

PRO-SERIES (2 ROW 1.0" TUBES)

This new aluminum radiator features two rows of 1" tubes and press formed end tanks. This doubles the cooling capacity of the original single row units. This design eliminates failures due to cracked plastic end tanks and/or gasket leaks. This unit fits into the original mounting however GM did not allow any room for a thicker core and therefore it is impossible to make a true Direct Fit[emoji768]. The upper two rubber cushions must be trimmed slightly to accommodate the larger core. We now include spacer plates and hardware so no shroud cutting is required!

About $549, but worth it. There are 3 row cores, but they may need the radiator shroud modified or the fan closures.

Lou

secondchance · 08-20-2018

Last time my OEM radiator failed, resulting head gasket failure led me down to a mini-stroker build. Twice! Come to think of it, thank you GM! I love the journey I had to take...

Karl · 03-17-2019

What is the best way to remove the cooling hose going from the water pump to the thermostat housing?

I am in the process of changing the radiator out and want to change all the hoses also.

Thanks.

-=Jeff=- · 03-17-2019

Unbolt the housing from the frame

Karl · 03-17-2019

Sounds simple enough. Will finish it up next weekend. I was not dressed to crawl under the car today! Lol.

06-23-2017	#11
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Radiator I am using that 3 core without any issues, but yes you have to modify the shroud for fitament __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

07-23-2017	#13
ssrszz4 Join Date: Jan 2017 Location: US Posts: 233	Re: Radiator I installed the 2 row Dewitt now all seems normal. My old one was probably 50 percent plugs! Sent from my XT1585 using ZR-1 Net Registry mobile app

08-20-2018	#14
lfalzarano Join Date: Feb 2011 Location: Clayton, North Carolina Posts: 1,133	Re: Radiator Look at a Dewitt 2 row core. PRO-SERIES (2 ROW 1.0" TUBES) This new aluminum radiator features two rows of 1" tubes and press formed end tanks. This doubles the cooling capacity of the original single row units. This design eliminates failures due to cracked plastic end tanks and/or gasket leaks. This unit fits into the original mounting however GM did not allow any room for a thicker core and therefore it is impossible to make a true Direct Fit[emoji768]. The upper two rubber cushions must be trimmed slightly to accommodate the larger core. We now include spacer plates and hardware so no shroud cutting is required! About $549, but worth it. There are 3 row cores, but they may need the radiator shroud modified or the fan closures. Lou __________________ Lou[COLOR="Red"][B][SIZE="4"][/SIZE][/B][/COLOR]

08-20-2018	#15
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: Radiator Last time my OEM radiator failed, resulting head gasket failure led me down to a mini-stroker build. Twice! Come to think of it, thank you GM! I love the journey I had to take...

03-17-2019	#16
Karl Join Date: May 2013 Location: Chicago Posts: 980	Re: Radiator What is the best way to remove the cooling hose going from the water pump to the thermostat housing? I am in the process of changing the radiator out and want to change all the hoses also. Thanks. __________________ 1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black Sold 1985 L98 Blue On Blue Sold

03-17-2019	#17
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Radiator Unbolt the housing from the frame __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

03-17-2019	#18
Karl Join Date: May 2013 Location: Chicago Posts: 980	Re: Radiator Sounds simple enough. Will finish it up next weekend. I was not dressed to crawl under the car today! Lol. __________________ 1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black Sold 1985 L98 Blue On Blue Sold