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Generation V6 FAQ: General Information
|What is a thermostat?
the stock thermostat set at?
Which thermostat do
How do you install a
How do I get rid of that annoying
Are programmers available and what
do they do?
Do underdrive pulleys affect
How many pulleys, one or
Will pulleys affect the charging
Should I upgrade my ignition, spark
plugs and wires?
What about NITROUS! I want
thermostat: 1. A driver-operated
device used to cycle the clutch to control the rate of refrigerant flow as a
means of temperature control. 2. A temperature-sensitive component located in a
housing at the coolant outlet of the engine that restricts coolant flow to the
radiator to maintain the desired engine-operating temperature. Often referred
to as Ranco control.
When the car is cold started the
thermostat will remain closed until this certain temperature is reached (for
instance 160 degrees), it then opens and the coolant can then run
thru the whole coolant system including the radiator so it cools down. During
this 'cycle' more fuel is injected (fuel/air ratio) so it adds a bit of extra
power also. A 160 degree thermostat will keep the engine temperature cooler
than for instance a 195 degree thermostat.
thermostat only works when the car is driving under normal conditions, so when
you are in a traffic jam dont be surprised to see that gauge going
towards 200+ degrees !! Its the radiator that cools the coolant and Not
the thermostat itself. Tip: Turning on the A/C also lowers the coolant
temperature as the cooling fan kicks in. There are schemes available for a so
called fan switch that will allow you to turn on the fan at any
moment instead of the preset 210 (or so) degrees.
What is the
stock thermostat set at?
V6 cars tend to come with a 195 degree
thermostat do you recommend?
It all depends on the area you live
in. If you live in Iceland and have more ice than sun then you are doing good
to keep that 195 degree thermo in !! On the other hand, all Texans should
consider getting a 160 .. These are 2 extreme examples but I think you catch my
drift right ? The 180 degree has proven to be a good substitute for both winter
and summer. Changing the thermostats is also an option: 195 in cold winter, 160
during summertime !! Okay installation might be tricky the first time, but it
gets easier every time ..
How do you
install a thermostat?
An installation report on a basic install
of a thermostat can be found
Detailed view of an install on a 3.4 L Camaro can be found
How do I get
rid of that annoying speed limiter?
There is not much you can do
to get rid of it. You can of course unplug your PCM and send it to a company
that will reprogram it for you, but other than that, not many options are
The speed limiter monitors the engine rpm above a certain
speed, when the car is going faster than the preset speed (around 90 mph) the
PCM starts looking at the rpm data. When the car reaches 3700-4000 rpm the fuel
is cut off and the engine seems to die. This happens at abut 108 or
(Note: If you change the gearing you will run into the
The Hypertech Power Programmer (plus) is the only
aftermarket product so far that enables the user to remove this annoying
limiter ! It was sold for the 3.4 some years ago, but it then was discontinued
Hypertech is supposed to release a new programmer (HPP3) for both v6
engines. When ??? Only God knows .....
Note: the JET PCM control module will NOT remove
the limiter !!
Update: For those who want
NO speed limitations, they can simply disconnect the VSS (Vehicle Speed Sensor)
connector mounted on the driver side of the transmission and the speed limiter
will not kick in. The only downside is that the speedometer will NOT be
working, so it's kind of useless for highway driving .... It is however ideal
for Dyno runs.
programmers available and what do they do?
They are currently
unavailable for the 3.4 or the 3.8 engine because Hypertech is behind on their
production. There was one for the 3.4 but was discontinued.
Hypertech Programmer supposedly will:
The only downside, it will only work on one car. It
downloads the previous uploaded data when it is connected so trying to
reprogram another PCM would be impossible.
- Raise RPM Limits
- Remove the top speed limiter
- Recalibrate after gear changes
- Recalibrate after tire / rim changes
- Adds up to 17 HP...by mods to fuel, timing, and
- Allows to store the stock parameters
pulleys affect performance?
Under drive pulleys are often
referred to as just pulleys or power pulleys.
They allow the water pump,
power steering pump and alternator to turn slower yet guaranteeing the proper
function of each item. By turning them slower many lost horses are
returned to where they belong, at the rear wheels. This modification is the
biggest bang next to a NOS system. Why? At about $70 it will give you a SOTP
improvement. The pulleys normally consist of a crank and alternator pulley.
pulleys, one or two?
The pulley that gives the extra power is
the crank pulley. Because its smaller (about 25%) this is the part
responsible for turning the serpentine belt slower, thus unleashing the extra
hp . Most kits have an extra (bigger) pulley that needs to replace the OEM
alternator pulley that will compensate for the slower turning serpentine belt,
so the alternator charging capability is not affected !! Its clear that
the 1 pulley kit (crank pulley only) will give the most gain possible, but for
the slight difference in power its wise to choose a dual pulley setup to
prevent your car from having charging/battery problems..
affect the charging system?
A dual pulley setup wont, and
a single pulley setup doesnt always cause problems either. Its when
you are in standing in traffic jams, in front of stoplights, etc when you
notice the needle of the voltage gauge go down to around 10 volts! Even
with dual pulleys while idling with the stereo on, fog lights, low beams, rear
window defogger (and stuff like that) you will notice that the needle starts to
go down towards the 10- volts !!! But situations like this are scarce, I'm
driving mine with Powertech dual power pulleys for almost 1.5 years now without
When you are driving (at any speed, even low speed) neither
pulley setup will be a problem.
upgrade my ignition, spark plugs and wires?
will definitely improve overall engine performance ! Dont expect giant HP
increases but they will sure contribute to smoother idling and prevent misfires
The aftermarket wires from for instance
Accel, Taylor or MSD are thicker
than the factory ones, and they are made out of superior materials which will
decrease resistance by a great deal !! In combination with proper plugs this
will result in a far more powerful spark resulting in a better combustion which
will result in more power and better emissions .. The wires are available in
several colors so they will compliment the overall cosmetics as
well, and they have better heat protection, so burned wires should become less
common .. Taylor has a great set of custom wires for about $35 ! These wires
should be 'plug & play' on the 3.4 engine but you can also get
universal kits which come with a crimping tool so everybody can
adjust their own wire lengths and they should fit about any engine that
way (MSD sells a good kit !!)
There isnt much available on the
ignition side, but MSD has recently released a kit for our v6 cars. Latest news
is that they are now working on custom wiring kits to provide a much easier
NITROUS! I want NITROUS!
As far as performance goes this is the
BIGGEST bang for the buck possible !! The Nitrous Express (NX) kit will either
add 50, 75 or 100 hp to the rear wheels and can also be used on the 3rd Gen V6
||50 hp shot
||75 hp shot
||100 hp shot
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