I have a 1937 chevy with a 305 tune port with 700R4 trans. at highway speeds my temperature creeps up very gradually to 225-235. a walker radiator is in it and I checked the bottom hose and have a spring in it. how can I solve this problem?
Using the radiator with a internal transmission cooler...that would show a gradual heat up as transmission gets hotter. Same if it has transmission cooler pancaked with radiator.
Too fast of coolant flow through radiator, not giving it time to dissipate heat...engine pulley size.
Thermostat partially stuck.
I've seen a lot of temperature gauges way off on their indication...electric sensor and gauge or old school gauge with cable and probe.
Hood side panels louvered.
All else fails...exotic and race car mod...air ducts to engine, exhaust, and transmission.
@heyinway
thanks guys, you have given me many options to eliminate my problem. I Do have internal trans cooler and A/C condenser out front. I have checked gauge and found there is some kind of magnetic interference, my gauge increases 10-15 degrees when I turn on my lights.??that doesn't help the creep in daylight.
I will probably get a trans cooler to eliminate one system and do a test for gases in the radiator. I have a heat sensing gun so will check top and bottom temps of radiator. inner fender panels are louvered but does anyone know what a working radiator should drop the temp all other systems working normally ? 195 thermostat
Hope everyone is healthy. this Covid has really disrupted the car show circuit but I just finished my shop and moving in for the winter
thanks again
Air will take the path of least resistance. 225-235 degrees F is at the top end where most vehicles with electric cooling fans will turn the fans on.
Some questions for you.
Is your antifreeze to water mixed 50/50?
Have you tried air damning the radiator to insure that air flows through it and not around it?
Are you using and electric cooling fan/s or a belt driven fan or both?
If a belt driven fan, is it a thermostatically controlled clutch fan?
How far from the radiator is the fan, belt driven?
Did you paint the radiator with other than a radiator paint?
Did you do a combustion leak test to rule out a blown head gasket?
Did you rule out a slipping water pump impeller?
Do you live in a state like Arizona?
@bc-st
Air will take the path of least resistance. 225-235 degrees F is at the top end where most vehicles with electric cooling fans will turn the fans on.
Some questions for you.
Is your antifreeze to water mixed 50/50? yes. coolant/distilled water
Have you tried air damning the radiator to insure that air flows through it and not around it? I have blocked all access except thru radiator to prevent cavitation.
Are you using and electric cooling fan/s or a belt driven fan or both? I have a offset 7 blade ford fan reverse flow water pump (serpentine belt) to the feelwith clutch but not sure the clutch kicks in. it has good resistance is there a way to check short of putting a heat gun to it?
If a belt driven fan, is it a thermostatically controlled clutch fan?
How far from the radiator is the fan, belt driven? I have it shrouded with fan near half way in.
Did you paint the radiator with other than a radiator paint? no paint has been used and clear if debris,
Did you do a combustion leak test to rule out a blown head gasket? I plan to buy a test kit to check this out. thanks
Did you rule out a slipping water pump impeller? do you mean inside the pump or talking about the pulley.
Do you live in a state like Arizona? sure Calif but it will creep even when cool weather thru Oregon
I think I need to get more water outside the engine than in but not sure the best way to approach this.
I appreciate all the suggestions and will revisit all of them
@bc-st
Adding onto this, is your engine compartment properly ventilated? A hot engine compartment complete with exhaust leaks and burning oil will lead to hotter temperatures without a way to vent it all out. Even though your front end is air dammed, you might want to consider allowing a few spots open for internal air release or maybe even a hood scoop.
I was referring to the internal impellor on the water pump.