Hey guys, i have an 85 camaro with the 2.8 liter. The coolant after about 10 min of driving, starts to boil, and today the cap blew off and i got coolant everywhere. I just need to know why the eng is overheating so fast and why the coolant is boiling?

Check the upper radiator hose. If there is no coolant in it, then it is the thermostat which isn't a big deal and not by any means expensive. If there is coolant, check the cooling fans to make sure that they come on.

Flush your cooling system with a garden hose. And make sure your putting the cap on tight.

Just about positive its the thermostat.

after the flush and the new cap make sure you have the right amount of anti-freeze. just a reminder, i forgot and had to do it all over again

kittycannon, before you install your new thermostat verify the temp it opens at. I use a pocket thermometer from my kitchen, a glass measuring cup and microwave, there are other ways. Heat the water to about 25 + degrees above the thermostat rating and watch for it to open while the thermometer is also in the measuring cup. You want to know what temp it opens at. I checked a 170 thermostat before I installed it and it did not start to open until 200 and fully open at 220! The high flow 180 thermostat I was going to replace opened at 180 and fully open at 190 so I put it back in. Always check them before installation.