2000Hawk

iTrader: (5)

I got the part number from here for the water pump and its *89018053. But GM Parts Direct wants to charge me $40 on shipping, so im just going to pick one up at Advance Auto Parts. My question is do the water pumps come with the T-Stat and Inlet, or is that something i need to go pick up at a dealer? I was considering a cooler T-Stat, but when i dynoed my car i can't remember if the tuner lowered the fans. So just to be safe i want to go with the factory t-stat, should i just go pick one up from the dealer.
Thanks
-Joel

SSNISTR

iTrader: (10)

I just did a Auto Zone pump, mine did not come with a new T stat, but I was able to get a new 160 with housing at the same time from them. If I recall the pump was like $135 and the T stat was $30.

If you don't want a 160, just reuse the one you have....as far as I know only the GM pumps are different and your current one won't fit. I could have used my old one on my new one from Auto Zone.

2002_Z28_Six_Speed

iTrader: (19)

Your engine will make more power when it is hotter [within reason]. 160 is too cold.

SSNISTR

iTrader: (10)

Not correct....

And you can tune a 160 stat to run at 170, 172 whatever....can't do that with a stock temp T stat.

Why do you think everyone runs 160's....

dailydriver

Yes.

The only thing that a (even tuned for fans) 160 will do negatively is get slightly worse gas mileage.
But even this is disputed by some who claim this will only happen in cold climes in winter.

2000Hawk

iTrader: (5)

SSNISTR: Im guessing you picked up the Duralast pump that their site shows for 133.99?

So i can pick up the 160 t-stat from autozone and run it, even though im not sure if my fans have been lowered to accomodate it? I was considering picking up the pump at advance, and the t-stat from the dealer. But if you guys say i can use the 160 from a local auto parts i might take that route.
-Joel

**Actually i just went through the Autozone site, and they have a 187* t-stat that comes with the seal and the housing. I might just pick that on up since im not sure if the tuner lowered my fan temp. I believe the factory t-stats run at 195* or something like that, my car should have no problem running the 187* correct? Thanks

9000th01ss

iTrader: (10)

Stock t-stat is 186*

SSNISTR

iTrader: (10)

Yup, that's the one I have.......I'd get the 160 either way. If your not tuned for it no harm. But then you can always go back to your tuner and have him tune it for the 160. I'm sure he will do that for little or nothing.

2000Hawk

iTrader: (5)

Well if it aint going to harm anything, then yeah i guess i'll take the 160*. Will i notice anything different with the 160*, not power wise but maybe it running/idle cooler?
-Joel

2002_Z28_Six_Speed

iTrader: (19)

Say what you want. A warmed up engine makes more power.

Everything in the motor is speced to run at temp. When you build a good motor they hone it [hopefully] at temp.

Do two dyno pulls. One cold and one hot and see what the difference is. Our cars were engineered to operate at 90 degrees.

SSNISTR

iTrader: (10)

Operating temp and a "higer" temp is two different things. If you think your motor will make more power at 190 then say 170, go right ahead and think that. I guess we all run 160 T stats for fun....

SSNISTR

iTrader: (10)

Not until you tune for it....

2000Hawk

iTrader: (5)

Awesome thanks, i guess i'll be picking up a Duralast Water Pump, and the 160* t-stat.
-Joel

2000Hawk

iTrader: (5)

Well i took the car apart on friday, and went to Autozone to pick up the water pump and t-stat. Well Autozone had the water pump, but they didn't have the thermostat in stock. Here are some of the part numbers:

Duralast Water Pump - EWP9189 - $133.99
Valucraft Thermostat 160* - 37960 - $31.99
Felpro Water Pump Gasket - 35635 - $9.99
**I didn't buy the water pump gasket, since the water pump came with its own. Im not sure how good in quality they are compared to the Felpro. But they didn't look/feel crappy, so i used the ones that came with the pump and saved $10.**

I had taken the water pump off 2 years ago when i installed my cam, so i already knew what to do. But for anyone not sure, just follow the instructions on LS1HowTo.com and go to the cam swap and go down to where they explain how to take off the water pump. For the thermostat just check out the install guide on installuniversity.com. Here are also some torque specs you will need to follow:

Water Pump - 1st pass 11ft. Lbs. & 2nd pass 22 ft. Lbs.
Thermostat - 7.42ft. Lbs. ** As stated in installuniversity.com **
Tensioner - 37ft. Lbs

When i finally finished everything and fired up the car it was still hot, but much of the sun had already gone down. But i noticed that while idling the temp never got above 194* (it did touch 195* once, but that was for a split second and dropped right after). The lowest it got while idling was touching 181*, but most of the time it would sit down to about 183* then go back up. Driving around it hardly ever changed much between 190*-192*. I got the data via my diablo sport, not sure how accurate it is. But im sure its alot more accurate than the factory temp gauge that always sits at 210*.
-Joel

9000th01ss

iTrader: (10)

My local AutoZone has a Mr Gasket 160* LS1 thermostat hanging up with the chrome accesories and that stuff. It's the only LS1 part I've seen there so I did double check. It doesn't come with the housing.

ae13291

iTrader: (8)

thats for the trucks

ae13291

iTrader: (8)

yes there is a bit more friction and less MPG but u dont see tuner shops and everybody else putting 160 t stats for no reason! the cooler the motor the more timing u can advance, why do u think a motor will detonate when its too hot? and even if we do have 160' t stats it does not mean it is exactly at 160! i think mine even goes back close to 180 in traffic. i would rather run cooler then to overheat!

9000th01ss

iTrader: (10)

Not the one I seen
http://www.partsamerica.com/ProductD...pe=133&PTSet=A

http://www.autozone.com/R,APP81628/v...ductDetail.htm

2000Hawk

iTrader: (5)

Just go to autozone and ask them for this part #37960
http://www.autozone.com/R,APP82845/v...ductDetail.htm

Thats what i ordered, and installed. I actually drove the car a bit more, even through some occasional traffic in some insanely hot weather. The highest i noticed via the diablo sport was 194*, in the past i had noticed my car running 210*-224*. I hadn't driven my car for 2 weeks so it felt good to take her for a spin again, i almost forgot how loud she was.
-Joel

Pinky93

Bottom line, running the engine at 160 instead of 180, you WILL make more power. Your combustion temperatures will be lower, allowing more fuel to be input without the fear of detonation.

The main reason they run them hotter is for better emissions. Higher temp, lower CO......