Subject: Re: Low coolant temps and no heat by biggrizzly on 2008/11/26 16:28:08
Quote:
BillH wrote: Don, Is the new radiator a stock one? If it is, I find it strange that a LT1 won't heat up regardless of which thermostat you have in it unless the fans are coming on early. On a 30 degree day, mine runs at 190. I can pull it down to 180 by turning the fans on (manual switch). If your temp gauges are correct and you're already at 180, a 180 thermostat will be open or opening plus/minus the tolerances. Do you know exactly when the fans are coming on? Before you switch the stat, I'd start the motor cold and see what temp the fans kick on at. While you at it, when you start to get some temperature in the radiator hoses, check both heater hoses (with your hand), turn on the heat and keep checking them.
You can turn the fans off by pulling the connectors at both relays, then see what temps you get.
I agree with the guys on a 160 in a standard small block not producing enough heat, I've had that happen. But not in a LT1 with the stock colling system.
Yes, it is a stock radiator, just a new one. Off the top of my head I can't remember what we set the fans to, I'll need to go back and check that. When I drove it the other day, it was around 35 dgrees outside and it never got above 160 until I stopped at a redlight. But as soon as I took off it went back down to around 150 or so. If the weather is warmer it will get up to around 180 but that was back in September on a 75 degree day.
