tony ham

I GOT A '95 Z28, auto transmission camaro. The car runs strong but continually overheats. Now for the details. First I performed a 100k tune up(car has about 103k now) of course it didn't fix the problem. So I then had the water pump replaced, still no go. Next got a 180 thermostat and programmed the cpu to work along with it by using my hypertech performance programmer, got some small results in lower temps, like just below the red zone. Last week my friend J.E. and myself dropped the engine out of the car and changed out all the gaskets, The head gaskets the exhaust gasket the valve cover gaskets, oil pan, tranny, just about any gasket you can think of and replaced all fluids. Oh we also put on some high perfromance heads in place of the stock ones( u can check em out on summitracing.com part number TFS-30400010). Now the gaskets we took out were shot to pieces so all leaks stopped but the overheating was way worse. Today(sept. 6) we replaced the fan switch and put in 160 thermostat because the fans would turn on sporadically. Voila everything runs like a new car, we street test it and everything, no overheating, holding steady around 165-175 degrees. Later on i restart the car and during the drive home about 20 miles temp just keeps going up and up till it red lines...Sone one HELP,my LT1 is kicking my butt. Maybe the radiator or water pump...i am open to suggestions and help.

V8Z28s

Are you sure its overheating and not a bad gauge i would check into it

Ntimid8r7

iTrader: (9)

yeah I would check into the sensors as well and just a dumb question since you obviously took everything apart, but you did get the coupler back on behind the waterpump? It has happened to the best of them.

nemss1

yep u gotta make sure u pet them back the way the came off

2001NBMZ28

Maybe you can find the answer here: http://shbox.com/1/4th_gen_tech2.html#cooling

nemss1

very good info there

ReedBooth

iTrader: (1)

Pressure test the heater core, then replace.