- Jan 6, 2013
- 637
I relate things I know to things I used to see often. For example, my old 305 TBI V8 had the thermostat in the valley of the intake and flowed coolant thru the thermostat to the upper tank of the radiator (a down flow rad) making the lower hose was the draw to the water pump.
The 4200 has what I would dare call a lower hose from behind the PS pump coming from the 'upper' tank on the passenger side. I feel no spring in the hose as I *was* once used to seeing....maybe it doesn't always matter. That would make the upper hose (thermostat) exit to the bottom of the tank and pump 'upwards' keeping the upper tank full so it can be scavenged back to the engine. Do I have this right? No way this system works backwards to the way I think.
Seems odd and somewhat wrong to to the way I would like the system to operate. Why this matters to me is my swap project's cooling system. I have a new cross flow radiator with GM SBC hose locations....the upper location is on the drivers side to be connected to the thermostat. My draw is then at the bottom passenger where I think it's best.
Picture is oriented with top being up.
The 4200 has what I would dare call a lower hose from behind the PS pump coming from the 'upper' tank on the passenger side. I feel no spring in the hose as I *was* once used to seeing....maybe it doesn't always matter. That would make the upper hose (thermostat) exit to the bottom of the tank and pump 'upwards' keeping the upper tank full so it can be scavenged back to the engine. Do I have this right? No way this system works backwards to the way I think.
Seems odd and somewhat wrong to to the way I would like the system to operate. Why this matters to me is my swap project's cooling system. I have a new cross flow radiator with GM SBC hose locations....the upper location is on the drivers side to be connected to the thermostat. My draw is then at the bottom passenger where I think it's best.
Picture is oriented with top being up.