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From ls1cama=
ro.net
http://www.ls1camaro.net/=
Converting Stock Thermostat
teamzr1,
29 November 2002=
Converting you stock Thermostat for lower temps
Stolen from teamzr1.com ;-)
In=
stead of
paying some vendor to charge you $80 for a LS1 thermostat that is 178=
or
160 degrees, modify the stock one for just a few dollars, plus control
what that opening temperature is. You can always change the ope=
ning
rate at anytime, so your stock unit becomes adjustable.
Th=
e custom
stat I purchased for a total of $80 with shipping is 178 degrees. I
installed it and found during highway driving the water temps never g=
ot
over 163 degrees !
I
contacted the vendor to find that since I am using a good race radiat=
or
and hence it transfers heat out better then a stock radiator does and
thus this $80 custom stat was too cold,
Th=
e stock
stat pops apart by compressing down and turning to unlatching the part
from the housing.
On=
ce the
parts are out, notice the shaft on stat sits in a hollow hole in hous=
ing.
By=
placing
a shim of certain thickness will dictate when stat opens sooner.
&n=
bsp; =
; &n=
bsp;
Overpriced Custom stat &=
nbsp; &nbs=
p; &=
nbsp;
Stock taken apart
![](3D"ConvertingStockThermostat_files/image001.jpg")
Th=
ese
homemade shims ( thanks to teammate Gary S=
for
his first hand experience and making the shims for my tests) as shown=
are
.077, .101 and .125 thick.
Ea=
ch would
change when stat begins to open, As spring heats up, stat moves downw=
ard
the shaft on back side.
Th=
e shim
dictates how much travel the stat has on that shaft.
Simply place=
a
shim into shaft hole in housing
![](3D"ConvertingStockThermostat_files/image002.jpg")
As stock the=
shaft
is barely seen in its housing=
![](3D"ConvertingStockThermostat_files/image003.jpg")
With shim is=
in,
shaft sits higher.
![](3D"ConvertingStockThermostat_files/image004.jpg")
&n=
bsp;
A =
shim of
.101 would reduce the stock stat from 194 degrees to 180 degrees. The
thicker the shim is, the lower the stat temp rating is.
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