ewingr

Hi

For some reason my LS1 runs very cool. In summer it will stay at 175 (according to my temp guage in the car), unless stopped for a while.

In the wintern in cool weater it doesn't even get taht warm.

It will not drive the heater enough to warm the car.

I'm told by a guy at Advance Auto Parts that with my Griffin Radiator it is just cooling the engine 'too well'.

I seem to only fine 190 at most on a thermostat. Was thinking of trying to come up with a hotter one, but not sure I can.

Anyone have any thoughts?

BTW...I have changed the Tstat before. In fact when I first got this conversion going, I had a very long thread here talking about it running too cool (wouldn't hardly come off of the C on the guage)...but it turned out I had a 2003 waterpump on this 2004 engine (engine probably manufacture in 2003)...and that let water through. Main point is, I do not think I have a faulty thermostat.

NemeSS

iTrader: (127)

do u have a truck pump?
ive noticed that when ive used truk pumps the engines run cooler, even with stock t-stat. i think the truck pumps more more volume than the cars.

ewingr

I honestly do not know. I purchased this engine in crate, as a 2004 Corvette LS1. Then after getting it going I found it was a 2003 pump. I would expect it to be a Corvette versioned pump. It did have other Corvette compents, such as harmonic balancer, fly wheel, and oil pan.