Bayer-Z28

THis is in conjunction to my other 160* T-stat thread...

I was at the Hobby Center on base changing my RR lug stud (which was MUCH easier than I thought...didn't have to pull the axle)...

I saw a laser temp gauge on the desk of the service area... Now keep in mind, the ambient temprature today is around 86 degrees with minimum humidity. I drove about 30 miles to base, used third gear a lot, untill I got on the freeway. I have a 160* T-stat and my fans programed to 180* something. Not sure, was done two years ago w/ my LS1 edit. My temp gauge was at 200* at time of testing.

After sitting for about a half an hour in the garage while I did the lug stud, I fired it back up, grabbed the laser thermometer and started measuring various random ponts of the engine and coolant system.

Fans were kicking on from time to time. I also indertsand that these are external temprature readings. the engine was also warming back up again. AND the hood was open, teps could be higher in the sun, when running at normal position. (hood closed)

Thermostat housing- 156*
Waterpump junction to thermostat- 165*
Thermostat/lower rad hose- 162*
Upper radiator hose male waterpump fitting -143-150*
Heads (at idle)- 158*
Radiator stayed a constant 130~ish degrees

INTAKE- Top of the plenum was constant 130*
LOWER INTAKE (to heads) -156*
TB- 112*
LID was a cool 102* at any point.
Bellows- 110*
MAF- 110*


after my fanss kicked on/off a couple times, I figured she was warm and re-checked the temp gauge in the car.......sure enough.... it read 200*

GhostZ28

niiice. I would've expected the average temps to be around 160 myself. thats useful knowledge. maybe our composite intake and tb bypass has alot to do with how people run so consistent at the track with LS's