LS Radiators - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69 customcamper · 02-16-2022, 01:08 PM

Who here has a US made LS radiator with metal shrouded fans to show off? I am trying to pick a radiator for my 67 project. Please only high end radiators. I will not purchase a Chinese radiator for any reason. I am thinking Entropy but I have seen photos of better looking radiators but never seen a name. The fans look high end on the entropy as well. The black plastic fans just look too cheap.

Thanks!

**A1971Blazer** · 02-16-2022, 02:28 PM

I have the Entropy...LS swap radiator
I bought it several years ago when they were $800.00
I'm still building my 67 LS1 but I did have the radiator mounted to test run the engine..
it seems to work really well....with the engine at operating temperature 190º....you could lay your hand on the front of the radiator and it was only slightly warm...
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69 customcamper · 02-16-2022, 02:42 PM

Quote:

Originally Posted by A1971Blazer

I have the Entropy...LS swap radiator
I bought it several years ago when they were $800.00
I'm still building my 67 LS1 but I did have the radiator mounted to test run the engine..
it seems to work really well....with the engine at operating temperature 190º....you could lay your hand on the front of the radiator and it was only slightly warm...
Attachment 2168398

Thanks for the post! I just wonder why they did not cover the radiator on the ends with the shroud.......

**A1971Blazer** · 02-16-2022, 02:49 PM

Quote:

Originally Posted by 69 customcamper

Thanks for the post! I just wonder why they did not cover the radiator on the ends with the shroud.......

it could be one of a hundred reasons...I didn't measure the existing cover but my guess is that they were trying to maximize the yield of a sheet of aluminum used to make that piece....if it was wider, there may be more material waste ??
That's what I would probably do, if I were making them...

halfstep · 02-16-2022, 02:58 PM

Couple different options.
I have the GC cooling with their soft start module. It uses the CR racing radiator.
These are high end, high tech, high stress resistant pieces. NASCAR, IMSA, INDY etc.

https://gccooling.com/product/67-87-...iator-package/

https://www.crracing.com/product-cat...ine_type=gm-ls

LS short box · 02-16-2022, 05:59 PM

Dewitt's get good reviews on the Corvette forums. I used a AFCO LS radiator on my 68 LS swap. Biggest I could fit.
Also I think Be Cool radiators are made in the US. Be Cool radiator on my current 80 Camaro LS3.
I've used Spal fans on all LS swaps. Never had a failure.

To A1971Blazer one of the things I did to clean up the upper radiator brackets I cut off the old fan shroud mounts. Just a suggestion.
See pic.

**A1971Blazer** · 02-16-2022, 07:06 PM

Quote:

Originally Posted by LS short box

To A1971Blazer one of the things I did to clean up the upper radiator brackets I cut off the old fan shroud mounts. Just a suggestion.
See pic.

Those are just temporary..but thanks for the suggestion..

D.B · 02-16-2022, 08:33 PM

I know mine is not an LS engine but I know Wizard Cooling offers radiators for them. And if you are looking for a high end set up you should check them out. In my 72 C20 running a 511ci big block with AC I installed one of their top systems and man does it perform. The quality is untouchable. Check the welds, the finish and the detail to quality in the pics below. The fans are 14" SPAL Brushless motors and they can move some air. No issue what so ever with overheating. Also I made up a mounting plate for the 50 amp fuse for each fan and junction block terminals for the positive and negative power cables.

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D.B · 02-16-2022, 08:34 PM

Here are a few more pics.

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D.B · 02-16-2022, 08:39 PM

Sorry, forgot to mention that I had to update my alternator to a higher amp unit. Bought this beauty from Powermaster. It puts out 168 amps at idle, 175 amps at cruise and 181amps at top end. Also had to go to # 2 cable from alternator to junction blocks. And # 2 ground cable.

**Mbeef61** · 02-16-2022, 10:43 PM

I went with entropy. Also looked at Ron Davis.

**1971Stepside** · 02-17-2022, 10:33 AM

Entropy.

pcmcobra · 02-19-2022, 02:20 AM

spend the dough on the entropy. I have the badass model. 16" fans.
I'm using tejas mounts, ly6/lsa and it fits. big block radiator top bracket and saddles.

**bigmoe** · 02-19-2022, 08:22 PM

I used RND Fabrication. They're a forum sponsor and you can get a member discount. Excellent quality. He'll make the hose outlet sizes to your spec.
http://www.rndfabrication.com/C10early.html

Spun Bearing · 02-19-2022, 08:38 PM

I have a Superior Radiator - made in Mt. Clemens, Michigan. I can't tell you how efficient it is yet- looks great though.

**truckdude239** · 02-26-2022, 01:02 PM

i orginally used a giriffn radiator fromm summit got 3 years out of it, i bought one from cold case when they where getting going for 450 buxs with fans with life time warranty they have now gone up to like 600 or so its been 4 years and so far still strong and no leaks

6600DURAMAX · 03-07-2022, 05:05 PM

Looking to go with RND Fabrication setup - love USA built products

This is current situation ..........

6600DURAMAX · 03-07-2022, 05:06 PM

Anyone know how to rotate pics ...

**Richard** · 03-08-2022, 02:46 AM

I purchased and have in hand a RND for my truck. There is a horror story about them in the vendor review section. Hopeful I am not the next one. Was a little disappointed in the mounting tabs. When ordered I told them I had a stock 4 row rad. It came with mounts for a 3 row. When I inquired, I was told it fits 3 and 4 row mounts. A 1/4" bolt fits in a 1/2" hole, does not mean it should be done or make it right. Had to acquire 3 row mounts for my core support to make it right. Am using a 19" 850w PWM fan on the rad.

Fix the pic for you

6600DURAMAX · 03-09-2022, 09:01 AM

Thanks for the heads up, will take it in to consideration.

Willie Makeit · 03-09-2022, 02:19 PM

stock brass 4 row with dual Spal 12" fans & a nicely sealed shroud has served me well, all the way from bone stock 4.8 to a supercharged 5.3

6600DURAMAX · 03-10-2022, 01:09 PM

How do you access the vendor review section ? I see the vendor section but not the review portion...

6600DURAMAX · 03-10-2022, 01:35 PM

Found the review ...

Looks like Entropy will move to top of list.. Would like to hear from RND if anything has changed with them ect... Looks like a great product but looks mean nothing if performance doesn't follow...

the ideaman · 03-10-2022, 01:41 PM

I also use an entropy on my ls3. Keeps the truck @ 194 degrees no matter the outside temperature.

Accelo · 03-11-2022, 02:58 AM

I used Dewitts.
https://www.dewitts.com/collections/...39826951536722

Made in the usa.
I personally like the OEM black look so I ordered mine with the
DeWitts Black Ice coating.

It is a product specifically designed to adhere to aluminum without any reduction in heat transfer. This is a special two part epoxy paint that is chemically hardened and it shrinks as it cures to a thickness of .001"

Couldn't be happier with it. You can get a better price through Summit.

02-16-2022, 01:08 PM	#1
69 customcamper Registered User Join Date: Aug 2018 Location: Glendale CA Posts: 122	LS Radiators Who here has a US made LS radiator with metal shrouded fans to show off? I am trying to pick a radiator for my 67 project. Please only high end radiators. I will not purchase a Chinese radiator for any reason. I am thinking Entropy but I have seen photos of better looking radiators but never seen a name. The fans look high end on the entropy as well. The black plastic fans just look too cheap. Thanks!

02-16-2022, 02:28 PM	#2
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,107	Re: LS Radiators I have the Entropy...LS swap radiator I bought it several years ago when they were $800.00 I'm still building my 67 LS1 but I did have the radiator mounted to test run the engine.. it seems to work really well....with the engine at operating temperature 190º....you could lay your hand on the front of the radiator and it was only slightly warm... __________________ 1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer .............

02-16-2022, 02:58 PM	#5
halfstep Registered User Join Date: Feb 2015 Location: Maryland Posts: 244	Re: LS Radiators Couple different options. I have the GC cooling with their soft start module. It uses the CR racing radiator. These are high end, high tech, high stress resistant pieces. NASCAR, IMSA, INDY etc. https://gccooling.com/product/67-87-...iator-package/ https://www.crracing.com/product-cat...ine_type=gm-ls

02-16-2022, 05:59 PM	#6
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 1,923	Re: LS Radiators Dewitt's get good reviews on the Corvette forums. I used a AFCO LS radiator on my 68 LS swap. Biggest I could fit. Also I think Be Cool radiators are made in the US. Be Cool radiator on my current 80 Camaro LS3. I've used Spal fans on all LS swaps. Never had a failure. To A1971Blazer one of the things I did to clean up the upper radiator brackets I cut off the old fan shroud mounts. Just a suggestion. See pic. Attached Images

02-16-2022, 08:33 PM	#8
D.B Registered User Join Date: Jul 2021 Location: Keller, Texas Posts: 442	Re: LS Radiators I know mine is not an LS engine but I know Wizard Cooling offers radiators for them. And if you are looking for a high end set up you should check them out. In my 72 C20 running a 511ci big block with AC I installed one of their top systems and man does it perform. The quality is untouchable. Check the welds, the finish and the detail to quality in the pics below. The fans are 14" SPAL Brushless motors and they can move some air. No issue what so ever with overheating. Also I made up a mounting plate for the 50 amp fuse for each fan and junction block terminals for the positive and negative power cables.

02-16-2022, 08:34 PM	#9
D.B Registered User Join Date: Jul 2021 Location: Keller, Texas Posts: 442	Re: LS Radiators Here are a few more pics.

02-16-2022, 08:39 PM	#10
D.B Registered User Join Date: Jul 2021 Location: Keller, Texas Posts: 442	Re: LS Radiators Sorry, forgot to mention that I had to update my alternator to a higher amp unit. Bought this beauty from Powermaster. It puts out 168 amps at idle, 175 amps at cruise and 181amps at top end. Also had to go to # 2 cable from alternator to junction blocks. And # 2 ground cable.

02-16-2022, 10:43 PM	#11
Mbeef61 Senior Member Join Date: Jun 2009 Location: Portland - OR Posts: 242	Re: LS Radiators I went with entropy. Also looked at Ron Davis.

02-17-2022, 10:33 AM	#12
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,928	Re: LS Radiators Entropy. Attached Images __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

02-19-2022, 02:20 AM	#13
pcmcobra Registered User Join Date: Aug 2006 Location: Florida Posts: 1,684	Re: LS Radiators spend the dough on the entropy. I have the badass model. 16" fans. I'm using tejas mounts, ly6/lsa and it fits. big block radiator top bracket and saddles. __________________ 1986 C10 SWB 6.0/6l90e Miami...Flee it like a native

02-19-2022, 08:22 PM	#14
bigmoe Senior Member Join Date: Oct 2014 Location: Brandon, Manitoba, Canada Posts: 953	Re: LS Radiators I used RND Fabrication. They're a forum sponsor and you can get a member discount. Excellent quality. He'll make the hose outlet sizes to your spec. http://www.rndfabrication.com/C10early.html

02-19-2022, 08:38 PM	#15
Spun Bearing Registered User Join Date: Nov 2018 Location: Farmington Hills, MI Posts: 27	Re: LS Radiators I have a Superior Radiator - made in Mt. Clemens, Michigan. I can't tell you how efficient it is yet- looks great though.

02-26-2022, 01:02 PM	#16
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: LS Radiators i orginally used a giriffn radiator fromm summit got 3 years out of it, i bought one from cold case when they where getting going for 450 buxs with fans with life time warranty they have now gone up to like 600 or so its been 4 years and so far still strong and no leaks Attached Images __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

03-07-2022, 05:05 PM	#17
6600DURAMAX Registered User Join Date: Nov 2000 Location: Wheatfield IN, USA Posts: 1,107	Re: LS Radiators Looking to go with RND Fabrication setup - love USA built products This is current situation .......... Attached Images __________________ 1972 K5 Build - plans - LS3-6L80e-One Tons..... 1971 CREWMAX Build.....at body shop for couple more years

03-07-2022, 05:06 PM	#18
6600DURAMAX Registered User Join Date: Nov 2000 Location: Wheatfield IN, USA Posts: 1,107	Re: LS Radiators Anyone know how to rotate pics ... __________________ 1972 K5 Build - plans - LS3-6L80e-One Tons..... 1971 CREWMAX Build.....at body shop for couple more years



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03-08-2022, 02:46 AM	#19
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,697	Re: LS Radiators I purchased and have in hand a RND for my truck. There is a horror story about them in the vendor review section. Hopeful I am not the next one. Was a little disappointed in the mounting tabs. When ordered I told them I had a stock 4 row rad. It came with mounts for a 3 row. When I inquired, I was told it fits 3 and 4 row mounts. A 1/4" bolt fits in a 1/2" hole, does not mean it should be done or make it right. Had to acquire 3 row mounts for my core support to make it right. Am using a 19" 850w PWM fan on the rad. Fix the pic for you Attached Images __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 Last edited by Richard; 03-08-2022 at 05:19 AM.

03-09-2022, 09:01 AM	#20
6600DURAMAX Registered User Join Date: Nov 2000 Location: Wheatfield IN, USA Posts: 1,107	Re: LS Radiators Thanks for the heads up, will take it in to consideration. __________________ 1972 K5 Build - plans - LS3-6L80e-One Tons..... 1971 CREWMAX Build.....at body shop for couple more years

03-09-2022, 02:19 PM	#21
Willie Makeit Registered User Join Date: Oct 2013 Location: Alabama Posts: 1,206	Re: LS Radiators stock brass 4 row with dual Spal 12" fans & a nicely sealed shroud has served me well, all the way from bone stock 4.8 to a supercharged 5.3

03-10-2022, 01:09 PM	#22
6600DURAMAX Registered User Join Date: Nov 2000 Location: Wheatfield IN, USA Posts: 1,107	Re: LS Radiators How do you access the vendor review section ? I see the vendor section but not the review portion... __________________ 1972 K5 Build - plans - LS3-6L80e-One Tons..... 1971 CREWMAX Build.....at body shop for couple more years

03-10-2022, 01:35 PM	#23
6600DURAMAX Registered User Join Date: Nov 2000 Location: Wheatfield IN, USA Posts: 1,107	Re: LS Radiators Found the review ... Looks like Entropy will move to top of list.. Would like to hear from RND if anything has changed with them ect... Looks like a great product but looks mean nothing if performance doesn't follow... __________________ 1972 K5 Build - plans - LS3-6L80e-One Tons..... 1971 CREWMAX Build.....at body shop for couple more years

03-10-2022, 01:41 PM	#24
the ideaman Registered User Join Date: May 2009 Location: Central Valley,ca Posts: 174	Re: LS Radiators I also use an entropy on my ls3. Keeps the truck @ 194 degrees no matter the outside temperature. Attached Images

03-11-2022, 02:58 AM	#25
Accelo Registered User Join Date: Mar 2015 Location: washington Posts: 2,161	Re: LS Radiators I used Dewitts. https://www.dewitts.com/collections/...39826951536722 Made in the usa. I personally like the OEM black look so I ordered mine with the DeWitts Black Ice coating. It is a product specifically designed to adhere to aluminum without any reduction in heat transfer. This is a special two part epoxy paint that is chemically hardened and it shrinks as it cures to a thickness of .001" Couldn't be happier with it. You can get a better price through Summit.

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