Jeff92RS

Didn't see this one listed yet. We ought to have a nice big section on it, since it comes up every spring. Some of the posts on the tech board are very comprehensive and could almost be just copied into the FAQ.

Chuck Everly

Disclaimer, These are not all my words. I borrowed some from other post on the Tech Board. However I do believe everything here is correct.

What thermostat are you using? This will very on your application but a lot of people use a 160* thermostat.

Make sure your car is not running lean. This will make you car overheat.

The farther the timing is advanced, the cooler it will run. Advance it as far as it will go without pinging. It will also generally run better.

Make sure you have a good radiator cap installed.

Make sure your fan/fans are running. The ECM makes the fans come on at 220* (I think). There is a very good article in Tech Central on controlling your electric fans.

Use a good water pump; the stock one is pretty lame, something good like an Edelbrock or even a Stewart Components.

Make sure the lower air dam (flat piece of black plastic about 6" tall directly underneath the radiator) is in good shape; also be sure the 2 plastic pieces in front of the radiator on either side of it (perpendicular to the surface of the radiator) are there.

Check the radiator hoses to make sure they're all right. I've heard of cases where the lower hose gets soft and weak, and the water pump's suction actually sucks it closed, shutting off the coolant flow.

Macgyver

And don't forget the notorious thirdgen fan switch between Cyl 6-8. That thing always goes bad