Entropy Radiator question

[SilverGT3RS]

Happy Memorial Day everyone!

I have some questions I’m hoping someone can help me with on a LS swap Entropy radiator.

I have several empty holes in the back of the radiator. 1 has a brass plug with anode (I’m assuming) and then there’s what looks to be a 1/2” threaded port below the upper hose neck, and a 1/4” threaded hole above the upper rad hose neck. The 1/4” hole above the upper hose port is for the steam port? What is the 1/2” hole for?

On the drivers side, I have 2 threaded holes top and bottom. I’m unsure of the size.

I’m assuming the drivers side holes are for the transmission lines? They don’t seem to be NPT. Anyone know what I need for these holes as far as fittings?

Thanks in advance!

[C.I.Blazer]

Waiting for my Entropy radiator to arrive to subscribing for details.

SilverGT3RS, have you figured out the wiring yet? I am installing the fans on relays and want to tie everything into a fuse block. It looks like the fans want 40 amps and the fuse block maxes at 30 amps per circuit. How are you wiring yours?

[SilverGT3RS]

Originally Posted by C.I.Blazer

Waiting for my Entropy radiator to arrive to subscribing for details.

SilverGT3RS, have you figured out the wiring yet? I am installing the fans on relays and want to tie everything into a fuse block. It looks like the fans want 40 amps and the fuse block maxes at 30 amps per circuit. How are you wiring yours?

I’m using a harness with relays made by PCM of NC. It’s made with the factory connectors and relays from a 2003-2005 LS motor.

It connects directly to a power block off the battery.

[norcalcap]

I have an Entropy radiator with a trans cooler built in. But what you are describing sounds different. I believe they have changed their design slightly since I purchased mine. Can you provide pics? I have the ability now to look at mine and send you pics to compare....

I have both intake and outlet on the pass side, overflow port coming off the radiator neck, steam port near that in the upper tank and 2 ports on lower tank for tranny, and drain cock next to lower hose.....

Hope this helps!!!

[SilverGT3RS]

Originally Posted by norcalcap

I have an Entropy radiator with a trans cooler built in. But what you are describing sounds different. I believe they have changed their design slightly since I purchased mine. Can you provide pics? I have the ability now to look at mine and send you pics to compare....

I have both intake and outlet on the pass side, overflow port coming off the radiator neck, steam port near that in the upper tank and 2 ports on lower tank for tranny, and drain cock next to lower hose.....

Hope this helps!!!

[norcalcap]

Sorry, I didn't realize you had a 67-72. Mine is in a 65. I have a traditional radiator, not a cross flow. I'd be guessing at what the ports go to that you do not have occupied right now. I do know that they add a temp switch bung to use with their fan controller..

[AussieinNC]

Originally Posted by SilverGT3RS

Two ports on drivers side are transmission cooler ports

Passenger side
Top port in radiator is for steam port
Lower port in radiator is for temp sender
Port in filler neck is for overflow tank

Hope this helps

[SilverGT3RS]

Originally Posted by AussieinNC

Two ports on drivers side are transmission cooler ports

Passenger side
Top port in radiator is for steam port
Lower port in radiator is for temp sender
Port in filler neck is for overflow tank

Hope this helps

Awesome! Thanks so much for the information. On the trans side, I’m assuming I need a AN adapter with O ring to screw in the ports, since I’m using a kit to run back to the transmission?

Any idea what the big port is for under the upper radiator hose? I’m just curious.

[AussieinNC]

Originally Posted by SilverGT3RS

Awesome! Thanks so much for the information. On the trans side, I’m assuming I need a AN adapter with O ring to screw in the ports, since I’m using a kit to run back to the transmission?

Any idea what the big port is for under the upper radiator hose? I’m just curious.

Its for a temp sender unit...usually setup to switch fans on...

[19stepSide72]

Do you have a link for this radiator? eBay? Summit?

[SilverGT3RS]

Originally Posted by 19stepSide72

Do you have a link for this radiator? eBay? Summit?

Www.entropyrad.com
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