hey guys im just going to start at i just got done with the head gaskets and intake gasket on my car and it is still heating up. i was thinking it may be the radiator (its the stock 6cyl from a comet). anyone maybe give me a direction to go.?
Maybe the 6 cyl rad isn't up to cooling the 351 w/ lots of goodies. More power equate to more heat. I think ur always going to have problems w/ that setup. Consider going w/ a radiator w/ more cooling capacity. A lot of the guy's here are using the alum radiator marketed by Champion Cooling, including me. They can be acquired on Ebay for something like $200.00 bucks.
...in addition to the previous suggestions, the radiator could be too small but if in good condition it should still keep it cool in normal conditions. It may be restricted or if it overheats at idle, you may have airflow problems as well. I have had the problem of the lower radiator hose collapsing at higher engine speeds myself.
Stuck thermostat, head gaskets backwards, poor fan setup, collapsed lower hose, malfunctioning water pump, could be a lot of different things.
Generally, if it runs hot at highway speed, the radiator's too small. If it's at idle it may be your fan isn't big enough or you don't have a good shroud! The shroud is most important on our cars for summer heat, idling in traffic, especially if you're using AC!
Mike (M.A.V.) can drive his car (w/c4) to Summit from his house in Macon (45 miles) and not even turn his fan on...wut up wid that???
