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Old 02-14-2015, 07:29 AM
parsonsj parsonsj is offline
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Quote:
Originally Posted by Andrew
Lingenfelter makes upgraded coolant pumps that are PWM. Isn't that what you want for this build?
Yes, and no. I wanted a PWM installation because I thought that's what GM did with the C6 ZR1. But they didn't -- they just run the pumps at full speed. They even run the pump at full speed in the C7Z06.

My main question was the 3rd wire in the provided GMPP harness -- which I now know is a 5V signal to the ZL1 pump to, you guessed it, run the ZL1 pump at full speed. That wire is not a PWM signal, and there is no PWM option anywhere in the GM lineup, which continues to the present day.

Even the LPE Stewart option just runs at full speed, and is advertised as flowing as well as the ZR1 pump.

So... I'll run the ZR1 pump at full speed. It simplifies the wiring, and wraps up all the engine wiring questions.
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Last edited by parsonsj; 02-14-2015 at 08:40 AM.
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Old 02-14-2015, 09:09 AM
130fe 130fe is offline
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Is the PWM fan control Function something that can be turned on with HP tuners?
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Old 02-14-2015, 10:18 AM
parsonsj parsonsj is offline
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Quote:
Originally Posted by Chris
Is the PWM fan control Function something that can be turned on with HP tuners?
Edit: Sorry! I thought you were asking about the coolant charge pump. Yep, the fans are easy to do.
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Last edited by parsonsj; 02-14-2015 at 12:34 PM.
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Old 02-14-2015, 10:34 AM
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HP Tuner dialog for the GMPP LS2 ECM tune. Others probably different.

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86 Monte SS
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Last edited by samckitt; 02-14-2015 at 10:45 AM.
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Old 02-27-2015, 10:15 AM
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Originally Posted by 130fe View Post
Is the PWM fan control Function something that can be turned on with HP tuners?
Hey Chris, your inbox is full.
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Old 03-19-2015, 06:52 AM
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I have a few left, anyone want one? $50 shipped.
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Old 03-20-2015, 02:52 PM
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I ordered a different radiator, ordered the C6 fan from Amazon, ordered some little clips/brackets from C&R Racing and went to town. The Monte radiator is a little wider than the Vette radiator, so couldn't weld the brackets to the tanks like C&R racing does. I did on one side & had to use some 1/8" flat stock on the other side. Gotta find the bolts/nuts yet to bolt it on.

Here is what It looks like:










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Old 03-20-2015, 06:17 PM
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^ that looks great Scot!

Props for staying with it and getting it done on this project
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https://lateral-g.net/forums/showthread.php4?t=31246

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Old 03-20-2015, 06:49 PM
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That does look really good. I would be chicken to weld on a brand new radiator !
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