Ls swap radiator - Chevelle Tech
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  • 1 Post By Blackhawk
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post #1 of 9 (permalink) Old Jul 14th, 20, 4:04 PM Thread Starter
Gary
 
Join Date: Jun 2020
Location: Albany Mn
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Ls swap radiator

I’m looking for a recommendation as to what radiator people are using on their ls swaps, would like a shroud and twin fans, for my project 72 Chevelle, with 5.3 and 4l60e.
Thanks
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post #2 of 9 (permalink) Old Jul 14th, 20, 4:15 PM
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Chris
 
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Re: Ls swap radiator

I'm using a Griffin setup that came with the aluminum shroud and 2-Spal fans. It fits great but haven't completed the swap so I'm not sure how it will perform.

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post #3 of 9 (permalink) Old Jul 14th, 20, 5:52 PM
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Cody
 
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Re: Ls swap radiator

I used the LS swap radiator from Auto City Classic. With a Chevelle you could use the normal aluminum radiator and reuse the 5.3L radiator hose; with my Monte Carlo the hose would be too short.
https://www.autocityclassic.com/chevelle-radiators/

I have only run mine for a few minutes at a time, but we're running one in my dad's 67 Chevelle and haven't had overheating issues.
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post #4 of 9 (permalink) Old Jul 14th, 20, 5:57 PM
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Re: Ls swap radiator

I used an Entropy radiator on the 6.2L LS swap in my '65 El Camino. It has dual fans and they are triggered by the LS computer. Really well (US) made. Keeps the LS cool. Here's a shot from the initial installation.
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post #5 of 9 (permalink) Old Jul 14th, 20, 7:03 PM
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Rick
 
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Re: Ls swap radiator

Hello,

For me, it is a “Cold Case” LS swap radiator purchased from Jegs and it is Jegs part number 359-GMA546AK - purpose built in size for an A-body. Fits under the stock, original top radiator plate. This has both inlet and output tubes on the passenger side and has a small inlet for the steam vent line. This radiator assembly also comes with a pair of electric fans and a tight fitting fan shroud through the two-row, 1.25 inch fins.

I'm very happy with it stuck in traffic on these very hottest of Louisiana summer days - cools my 5.3 with ease. If you are going to use an LS truck water pump, I can tell you what radiator hose part numbers I used if you need them. I'm also running a 13 pound magnesium anode radiator cap to minimize electrolysis between the iron block, aluminum heads and aluminum radiator.

Rick
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post #6 of 9 (permalink) Old Jul 15th, 20, 7:23 AM
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Dan
 
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Re: Ls swap radiator

I went with the pricey C&R piece of art.

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post #7 of 9 (permalink) Old Jul 15th, 20, 8:30 PM
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Re: Ls swap radiator

Call up DeWitts. Amazing piece and I was very happy w the price.
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post #8 of 9 (permalink) Old Jul 15th, 20, 10:44 PM
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Andrew
 
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Re: Ls swap radiator

Both dewitt and C&R are great. If you want the best fan solution, you need to go with the latest technology brushless fans from SPAL. There are two inexpensive OEM options, one for a C7 Corvette and the other from a 2015 Chevy Volt. The corvette is a large single and the Volt is dual 12" fans. Both are rated at 600 watts. You will need a PWM signal, but both fans have the PWM controller built in. I prefer to use Holley EFI and program the PWM output for the fans. I use this on my 67 Cougar LS swap, although with the C6 fan and external fan controller, which is old tech now...

Andrew


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post #9 of 9 (permalink) Old Jul 16th, 20, 5:34 AM
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Re: Ls swap radiator

I went with a DeWitt on my Bel Air. Just got the car on the road and it does a great job maintaining stable temps.
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