455 Coolant Flow I made a "slight" goof on my last posting. it is not the radiator that should be at least 16 qts it is the capacity of the cooling system. a lot of the coolant remains in the engine block and hoses. this would still mean that you need at least 8 qts of antifreeze. as to testing the fan with rolled up newspaper i think you can do it if you. Jun 22, 2009. messages. 1. jun 22, 2009. #1. i just bought a jet boat with a 1973 olds 455 id:396021f with a berkeley 12jg pump. the engine has hardin exauhst manifolds. my question is how are the cooling lines routed, and what temperature thermostat should i use; 160f? also the oil pan is leaking.
Olds 455 Ex Logs Need Help With Cooling Please Its got a 455 olds with over the transom bassett headers and hardin 4 port thermostat kit. the plumbing is laid out closely to this diagram. from the pump, there are 2 separate gate valves. one line is for water going into the engine, and the other for water going directly to the headers. previous owner was running the headers dry due to some. Cooling [ thanks to for this information. ] crank if you drop the late 400 455 crank (4.25 stroke) into the early e block 400 block (4.000 bore), you get a 427 olds. if you go 0.060 over, you get a 440 (unfortunately, you need a custom set of 4.066 pistons to get it to 442 cu in). [ thanks to joe padavano for this information. ] differential gears. Sootie007 65 skylark 455 t350. i found my 65 service manual and you are correct . from the lower radiator hose to pump. through cover to over the cylinders front to back. then through the rear of the cylinder banks into the rear of the cylinder heads. it then flows from the rear of the cylinder heads into the front of the cylinder heads. Nothing smaller than 1" tubes (most common), better choice would be 1.25 or 1.50 tubes more capacity. cooling fins 12 14 per inch. shroud for the fan, so the air it moves is forced to cross the tubes and fins. i prefer a puller fan. shoot for 190 200* at idle in traffic, hopefully with a c on. good luck.
Oldsmobile Engine Cooling Diagram Sootie007 65 skylark 455 t350. i found my 65 service manual and you are correct . from the lower radiator hose to pump. through cover to over the cylinders front to back. then through the rear of the cylinder banks into the rear of the cylinder heads. it then flows from the rear of the cylinder heads into the front of the cylinder heads. Nothing smaller than 1" tubes (most common), better choice would be 1.25 or 1.50 tubes more capacity. cooling fins 12 14 per inch. shroud for the fan, so the air it moves is forced to cross the tubes and fins. i prefer a puller fan. shoot for 190 200* at idle in traffic, hopefully with a c on. good luck. From south carolina. there is no particular issue with the design of the cooling circuit on a 455 olds. big blocks run hot is a bench racing wives tale. figure out why your engine is running hot and fix it. abone. flamedabone, sep 17, 2016. share post #7. turboroadster, oldsjoe, timmy2times and 6 others like this. The average jet drive can build pressures in excess of 150psi and the engine cooling system is designed for no more than a maximum of 22 25psi. excessive water jacket pressures can cause head gasket and intake manifold gasket problems and water in the oil. once again, oldsmobiles are especially vulnerable to this problem.
455 Olds Water Pressure Setting Plumbing Info Performance Boats Forum From south carolina. there is no particular issue with the design of the cooling circuit on a 455 olds. big blocks run hot is a bench racing wives tale. figure out why your engine is running hot and fix it. abone. flamedabone, sep 17, 2016. share post #7. turboroadster, oldsjoe, timmy2times and 6 others like this. The average jet drive can build pressures in excess of 150psi and the engine cooling system is designed for no more than a maximum of 22 25psi. excessive water jacket pressures can cause head gasket and intake manifold gasket problems and water in the oil. once again, oldsmobiles are especially vulnerable to this problem.
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