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My buddy MowPar is busy mowing hay and hasn't had a lot of time between jobs lately, so he asked me to put the question out there.
The 440 in his '65 Belvedere is overheating at idle or when stuck in slow traffic. It seems to come down to a reasonable temperature when highway cruising, so the radiator is working.
Radiator is a good solid 3-row unit - absolutely mint inside,
Thermostat is 185* unit,
Shroud is complete now after a modification and draws a lot of air over engine and through radiator,
Fan is a 5-blade solid - no viscous unit,
Mild cam, standard HP exhaust manifolds, stock all round basically,
Temperature gauge in car reads high - issues with sender unit,
Temporarily installed an aftermarket gauge, shows a high temp also,
Laser temp shows temp is too high,
After shutting off engine, water is heard to be gurgling and hissing inside engine,
Engine actually smells hot and passes coolant out the overflow,
Cap is correct,
Running coolant mix and water - good proportions,
Heater works fine,
Just fitted a new GMB waterpump (Quality Japanese unit) and radiator has been rodded/cleaned.
After looking through several other threads, we are wondering is it possible to screw up the installation of the head gaskets (this engine has only done 350 miles, and we haven't taken it apart) - and consequently get a bad water flow.
Also wondering if there is something stupid like a blockage which is an easy mistake for an engine builder to make that we could look into?
We have loads of receipts for radiator and associated repairs/replacements etc, and wonder if there is a history we don't know about.
Any advice input welcome....thanks guys
The 440 in his '65 Belvedere is overheating at idle or when stuck in slow traffic. It seems to come down to a reasonable temperature when highway cruising, so the radiator is working.
Radiator is a good solid 3-row unit - absolutely mint inside,
Thermostat is 185* unit,
Shroud is complete now after a modification and draws a lot of air over engine and through radiator,
Fan is a 5-blade solid - no viscous unit,
Mild cam, standard HP exhaust manifolds, stock all round basically,
Temperature gauge in car reads high - issues with sender unit,
Temporarily installed an aftermarket gauge, shows a high temp also,
Laser temp shows temp is too high,
After shutting off engine, water is heard to be gurgling and hissing inside engine,
Engine actually smells hot and passes coolant out the overflow,
Cap is correct,
Running coolant mix and water - good proportions,
Heater works fine,
Just fitted a new GMB waterpump (Quality Japanese unit) and radiator has been rodded/cleaned.
After looking through several other threads, we are wondering is it possible to screw up the installation of the head gaskets (this engine has only done 350 miles, and we haven't taken it apart) - and consequently get a bad water flow.
Also wondering if there is something stupid like a blockage which is an easy mistake for an engine builder to make that we could look into?
We have loads of receipts for radiator and associated repairs/replacements etc, and wonder if there is a history we don't know about.
Any advice input welcome....thanks guys