LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What degree thermostat?

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Old Feb 29, 2004 | 04:03 PM
  #1  
CL21376's Avatar
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What degree thermostat?

I just installed a manual fan control switch in my car today.

Should I just keep the stock thermostat, or do I need to replace it with a cooler one?

Thanks!
CL
Old Feb 29, 2004 | 04:24 PM
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Well since you have the fan switch....go with the 160!
Old Feb 29, 2004 | 04:49 PM
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I agree you should get the 160. Make sure you get a Hypertech or SLP stat.
Old Feb 29, 2004 | 05:28 PM
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Originally posted by RedHottG2
I agree you should get the 160. Make sure you get a Hypertech or SLP stat.
I agree to that !!!
Old Feb 29, 2004 | 05:58 PM
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Is there a difference between the Hypertech/SLP thermostat, and say, auto zone's brand?

Does GM make a 160* thermostat?

Thanks guys!
Old Feb 29, 2004 | 06:01 PM
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I just bought an autozone brand. I've also heard people only recommend the ones mentioned above. I dunno what the reason is though.
Old Feb 29, 2004 | 08:06 PM
  #7  
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Do NOT use a conventional SBC thermostat in a "reverse cooled" LT1 engine. It does not have the required valve to seal the opening to control flow through the orifice in the water pump housing.

See this photo/explanation on Shoebox's Tech Pages .... always a good place to look when you have a question.
Old Feb 29, 2004 | 08:08 PM
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anyone got a summit p/n for the stat? I got 20 bucks credit towards summit I can burn
Old Feb 29, 2004 | 08:26 PM
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160 thermostat

will a 160 degree thermostat cause any other complications with the car since it will be running cooler. Iv heard both ways anyone know ,,,thanks
Old Feb 29, 2004 | 08:35 PM
  #10  
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Re: 160 thermostat

Originally posted by akobak
will a 160 degree thermostat cause any other complications with the car since it will be running cooler. Iv heard both ways anyone know ,,,thanks
I have never heard of disadvantages to running a 160 stat. The only thing I can think of is in the winter time it takes forever for the motor to heat up if it's really cold out. That's all I know of.
Old Feb 29, 2004 | 09:01 PM
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I think it depends on where you live. When I lived in Florida, I put the 160 in and I feel it made a difference, althoug a small one. Just keep in mnd your environment.
Old Feb 29, 2004 | 09:08 PM
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Originally posted by TAKEN19
I think it depends on where you live. When I lived in Florida, I put the 160 in and I feel it made a difference, althoug a small one. Just keep in mnd your environment.
Yeah your right about that. I know some people that put in 180 stats from up north when it gets really cold. Then they turn around and put the 160s back in in the summer. I guess that would work if you wanted to do it that way.
Old Feb 29, 2004 | 09:19 PM
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Originally posted by Zack
anyone got a summit p/n for the stat? I got 20 bucks credit towards summit I can burn
The PN for the 180* one is HYP-1008. And only $17.99 I couldn't find a 160* anywhere in Summit.

Chad
Old Feb 29, 2004 | 09:50 PM
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Every now and then someone will post about white goo inside their valve covers and I think that is a result of the 160 thermostat. It doesn't let the oil get hot enough to boil off moisture. You might make a bit more power but I'm not sure its worth it in the long run.
Old Feb 29, 2004 | 10:12 PM
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Originally posted by Bud M
Every now and then someone will post about white goo inside their valve covers and I think that is a result of the 160 thermostat. It doesn't let the oil get hot enough to boil off moisture. You might make a bit more power but I'm not sure its worth it in the long run.
Anybody else heard of this?

So Hypertech makes a 180* and SLP makes a 160* (PN 100224--$19).

Those of you with a manual fan switch: which one did you ues?



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