160 Degree Thermostat for Ls1 Motor - Team Camaro Tech
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Old Jun 30th, 10, 11:43 AM   #1 (permalink)
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160 Degree Thermostat for Ls1 Motor

Hey guys. Is there a difference in what name brand of 160 degree thermostat that i should use for my 98 ls1 Z28? I've looked at a few brand online. SLP, Hypertech, Mr. Gasket, PowerStat and my local O'Reilly auto parts store carries the Murry's brand for $29. Is one brand better than the other? Or should i just keep my stock thermostat? A friend told me that a ls1 motor runs better around 200 degrees. Is this true? Any and all responds are welcome. Here are my mods i have so far.

SLP air box lid
SLP cold air induction package
K&N air filter
Smooth bellow
QTP long tube headers-no cats
Custom y-pipe
GMMG chambered exhaust
3.42 rear gear ratio
Texas Speed Torquer v.2 Camshaft-232/234 .595/.598 lift 114 Degree Lobe 1800-6400 RPM Power Range
Edge Racing Torque Converter- 3000 Stall
Ls6 timing chain
Ported oil pump
Transmission cooler
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Old Jun 30th, 10, 12:12 PM   #2 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

A 160 stat will not change the temp your engine runs at and as a power adder is just part of the package. In a LS1 or a LT1 (odbII) you use the 160 stat along with a software change to trick the computer into allowing more total timing.

I'd lean toward the Mr Gasket because in the older cars the Mr Gasket is made by Robert Shaw and is a fast open/close stat where as your typical Stant etc are slow open and close...
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Old Jun 30th, 10, 02:55 PM   #3 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

Thanks for the info. I have the Max Energy Power Programmer from Hypertech. I can set my cooling fan temperature at 160 degrees to match the 160 degree thermostat. Will this work with the Mr. Gasket thermostat?
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Old Jun 30th, 10, 04:36 PM   #4 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

I often use marine thermostats for my engines (and always in my 95-LT1 ).
They are Stainless and cost @$20 each ...
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Old Jul 1st, 10, 10:00 AM   #5 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

Thanks. Where can i find a marine thermostat?
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Old Jul 1st, 10, 10:43 AM   #6 (permalink)
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Wink Re: 160 Degree Thermostat for Ls1 Motor

Near you ???
West Marine most likely
... or - Overton's (on-line and local)
or the on-line suppliers ...
mymastercraft.com
boatbandit.com
boatfix.com
marineparts.com
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Old Jul 1st, 10, 12:59 PM   #7 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

Thanks again.
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Old Aug 19th, 10, 12:06 PM   #8 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

Also running a 160 stat here in my Z28... with the fans tuned to come on sooner then factory
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Old Aug 19th, 10, 02:13 PM   #9 (permalink)
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Re: 160 Degree Thermostat for Ls1 Motor

Quote:
A 160 stat will not change the temp your engine runs at and as a power adder is just part of the package. In a LS1 or a LT1 (odbII)
Quote:
you use the 160 stat along with a software change to trick the computer into allowing more total timing
.
Quote:
I'd lean toward the Mr Gasket because in the older cars the Mr Gasket is made by Robert Shaw and is a fast open/close stat where as your typical Stant etc are slow open and close...
Further to that...running at 160 is a temp the oil and GM manufactures never intened to have the engine to run at full temp...espec on controlled engines.
AND it is important to have the correct thermostsat with the correct flow charactorists for THAT engine.....thu fast opening in most cases doesnt really effect anything other than holding water back within very close temp range rather than opening and closing on a resistition basis
Personally Im not a fan of fast opening thermostats over the stock...It temp is down just below the spec, thermostat fully closes rather than restict....then hammwer the engine, high temps, the water is heald against 'hot spots' longer untill it reaches, flows to the thermostst, which then opens....several secs.
A normal always has a lot of water continually flowing over 'hot spots' even thu a little restricted
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