2005 GMC 5.3L Stock

I'm going to install a K&N series 77 Air Intake kit and still shopping for a programmer or custom tune.

Should I replace the stat with a lower one, 180 or 160?
What's the stock one, 195 F???

I've read that the hotter the motor and the cooler the air coming in makes the best power.

My last truck was a 1993 5.7 with a 160F stat. Motor was still running good at 250K.

Anyone have any part numbers or links for stats that will work? I've found some with the housing for $50, (don't want) but I know there is the SLP stat #100228 (160F) for around $20. Can't find SLP stat (180F).

Any help would be great.
Thanks,
Corey

 

yah toss a cooler thermo in..basically tells motor is runnign cold and dumps more fuel..better power..less mpg

 

you will have to get a 160 if you change stats. you need the LS2 style stat
NOT with the housing. thunder racing has them for 20 bucks

 

Not worth it unless your tuning engine to the ragged edge.
You will also lose 1 mpg on average!

Jim

 

stock tstat is 183 degrees

 

I dont think this is true.....

get the 160 thermostat.... truck wont run at 160 anyways, I believe it'll run between 175-180....

 

That's what mine ran.

 

mine too 175 to 180 with the 160 in there and e fans runnin high.

 

Ok....whatever, that's what mine did. Ihave a SLP 160* t-stat. I lost an average of 1 mpg. I know because I keep constant track of my average mpg on my display. There was no increase in hp either. It uses a lot more gas as well during warm up as well. That's mainly where the average is hurt at.
I really think the 180* stat would be a better choice for a stock engine.
That's my opinion.

Jim

 

I put a 180 stat in my truck and it ran the same 196 it did with the stock stat.