What is the best adjustable Fan Switch
I looked all over for an adjustable fan switch but couldn't find one for our cars. Either it's on or it's off and done manually. You can buy a generic thermo switch and relay and wire it in, big hassle IMO. I finally got HPTuners and adjusted the fan on/off temps that way. Most speed shops will do this for you, but it's not cheap. A local shop that I won't name (sponsor) wanted $100 just to adjust the fan settings. I don't think so. 
Adjustable as in you can set the fans to come on and go off at whatever temp you desire without having to remember to flip a switch. Someone makes them for the 3rd gens or older vettes but not for our 4th gens. Here's a universal kit:
http://store.summitracing.com/partde...0&autoview=sku
http://store.summitracing.com/partde...0&autoview=sku
Originally Posted by jmm98LS1
Dunno what you mean by adjustable, but SLP makes a manual fan switch that allows you to turn on the low or high fans whenever you want for about $65.
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Caspers electronics and SLP both sell them. I see more people using SLP's but hey whatever it just turns on your fans. I don't think one is better than the other.
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BOSS APPROVED! The keyword of his question was "adjustable" switch. The SLP one is nice but isn't adjustable. The type jimmyblue is talking about has a sensor that is placed in between the fins of the radiator and has a box that you can set to tell what temp you want the fans to turn on.
Originally Posted by Urban Legend
SLP has a very nice plug and play switch.
Last edited by HavATampa; Aug 31, 2006 at 08:29 PM.
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SPAL makes a fan controller that is programmable for low and high speed operation. I'm not sure how you would use it to control a low and high speed fan - they might have to be wired to both be on at either speed. The SPAL controller is triggered from the temperature sensor - again I'm not sure how the controller can be integrated into the LS1 engine controls. I'm currently using the SPAL on an older 350 but I intend to try to integrate the controller into my LS1 installation. My controller came from Dewitt's as part of a radiator/fan package for my 72 Vette.
Rick B.
Rick B.
