Alright, my servo is on it's way here and since I'll be doing some work on the truck this weekend, I was wondering where I can pick up a 160º thermostat. It kinda sucks, because when I did this mod to my old '78 Custom Deluxe, I got the thermostat at Autozone. Apparently this is not the case for my 2002.

Hypertech makes a 160 for your truck. You can get one from www.summitracing.com Part Number is HYP-1014

//2000CAYukon

That HAS to be a joke. $50 for a tstat? Aregular one is only like $22. Anyone got a cheaper one?

Yes it does seem to be a bit pricey; however, the advantages of the hypertech is that if it fails, it will fail open (unlike a regular stat that will fail closed).

You should look at some of the LS1 Websites to see if other companies make a 160 for the Gen-III engines.

//2000CAYukon

I quized Allen from Nelson Performance and his opinion is that for the tunes he does you are not going to gain much at all by dropping the temp. That was definitely true for my case. Hypertech and Superchip have to change the temp to fool the engine in other ways. If you are doing a handheld tune the temp is the way to go. If you are getting a full PCM tune ask first before wasting your time and money.

I quized Allen from Nelson Performance and his opinion is that for the tunes he does you are not going to gain much at all by dropping the temp. That was definitely true for my case. Hypertech and Superchip have to change the temp to fool the engine in other ways. If you are doing a handheld tune the temp is the way to go. If you are getting a full PCM tune ask first before wasting your time and money.

How about no tune at all?

You know, I've run engines with no tstat at all. Does ok, unless you need to use the heater, because the water never gets hot enough to generate any heat

Good question, I defer to someone smarter.....

I asked this question at O'reilly's after I installed my Hypertec program and the guy said if I didnt have a problem with the temp rising higher than normal or overheating then it wasnt worth it. If someone else knows different or if it does help, please let us know. I was also told you cant just change the thermostat on these engines. The thermostat and housing are sold as and have to be changed as one unit.

[QUOTE=jeep_cj4x4 I was also told you cant just change the thermostat on these engines. The thermostat and housing are sold as and have to be changed as one unit.[/QUOTE]

That is correct. It's also a PITA to have to change it. Especially if its corroded like hell, and didnt' have any anti-sieze on the bolts like the one I had to chage was.

you might not find one cheaper but i gaurantee its worth it no matter what anyone says. When you decide to step up in performance the worst thing that happens to the motor is friction!!! Well friction causes heat, if your engine is already at 210 degrees normally then imagine what happens on those 85*+ days and you go stomping on the gas in stop and go traffic!!! You're engine temps will start to get unstable and thats not good because it causes the metal to warp. Now if the deck of your engine block warps in the slightest bit then the first thing you'll have happen is you'll start blowing head gaskets, next you warp the heads. 1000's of dollars worth of repair, and they all can be prevented by spending 50bucks on the tstat. Allen is right, you may not need it now! But if you continue on the path for more power you'll wish you had one before its too late!

Truth is I noticed a diff. in power with mine!!! This may not be true for others, but my theory on this is because you know when you start driving in the morning and for some reason when your temp is right around that 180* mark or the 1/4 mark whatever degree that is, the truck feels a little more responsive!! Well the tstat keeps it in that area all the time!! Actually i take that back, it will help keep it there longer. I have electric fans also so mine stays there no matter what abuse i give it! And e fans will make a big difference on the truck believe or not.

After a few days with my elec fans I noticed the temp is very constant no matter what I do, well worth it and makes it easier to install a better air intake system.

But don't you have to have the electric fans progammed in? Is there some kind of a good programmer available for sale like what nelson uses?

You can get exctly what Nelson uses which is LS1edit. Its very expensive and takes alot of knowledge about the parameters you have to alter to get the tune right. I'd leave that up to the pros.

Yeah, I found it. I just wish a tune didn't cost so damn much.

I sold my hypertech to buy my tune....I think it sold it for $200 and the tune was $385 total....something like that.

My point exactly. More money than I can come up with to spend on it right now.

Want a loan??? hehehe

I mean, I've got the money, but I don't feel that paying someone nearly $400 to hook my pcm up to a computer and changing a few things is worth the price. I know that a nelson tune works wonders and it would be like driving a new vehicle, but shit, that's a lot of money for that.

Basically, I might enjoy the tune for a day. After that, my wife would kill me when she found out I spent so much on it

If I could keep my foot out of it I bet I could see 2+ MPG gain from the tune. Right now with my foot all over the gas I am seeing 1.5+ MPG. That over my 4500 mile summer vacation will pay for itself.

As for the fan controller check out Delta Current Control. You can set the temp, 160 - 240, you want using the LS1 fans. I sent mine back because I got the tune faster than the controller. The wiring harness from Nelson looks factory. Can't complain, all I had to do once I found the fans was get some strap metal, drill some holes, paint, hook up the harness and run.

Hey keep pumping me with info like that. Stuff like that will help me covince my wife of it's neccessity.

yep DCC is the way to go, thats what i use!!! http://www.dccontrol.com/

It is nessecary, just say, "hey babe, would you rather have a truck the reliable all the time...or would you want to wonder if something might happen to it while your down the road" ;)

hmm, the gas mileage thing was good. I would have already saved $50 this month with a +1.5 MPG, and the wife is coming around to my way of thinking

I think that signature from someone that goes, "Mind over matter, if she don't mind it doesn't matter." Is that yours or does that really apply to you? Just think what a good intake with electric fans and a tune could do.......2.5+ ?????? Mind over matter, just don't mind her and then it doesn't matter.... is that true????