Need help with cooling diagram

[goingballistic]

OK, Finally getting to the dyno next week, been a long road but it's finally here.

I need to know if anyone has a cooling flow diagram for a 350. The intake manifold has two ports on the front of the manifold, one on the left side and one on the right (either side of the thermostat housing, threaded). The water pump has two threaded ports, one on top, one on the left ( looking from the front of the engine). The intake manifold also has another threaded port right behind the carb. ( RPM AIR GAP manifold)

Anyone got a flow diagram, the size of the nipples that go in there etc. I need to get all the hoses in place this weekend so I can get this beast to the dyno.

Any help is much appreciated.

 

[Jack]

Is this for an engine dyno (motor out of car)? ... or ... chassis dyno (measured at drive tires)?

If engine dyno ... typically, only cooling connected to dyno is single large water pump inlet and single large t'stat housing outlet (same places your rad hoses connect to motor). Typically, the heater hoses are blocked or their ports are plugged and not used. Some setups will use a temp sensor screwed into a port in intake manifold.

Regardless, your BEST bet is to get some details from the guy who's gonna be setting it up on his dyno. If engine dyno, you should also ask about flywheel or flexplate & size, bellhousing, your carb or his carb .... etc.

 

[Vettehead Mikey]

Some of the threaded ports you mention on the intake manifold sound like vacuum ports, not coolant.

 

[JohnZ]

Coolant enters the block from the water pump legs, flows up through the heads, and exits through the crossover passages on either side at the front through the thermostat housing. The port behind the carb is for a vacuum fitting (power brakes, headlight system, A/C, etc.). The heater uses two fittings - the discharge to the core is on the passenger side of the intake and uses a 5/8" hose, and the return from the core to the fitting on the passenger side of the water pump is a 3/4" hose.

 

[goingballistic]

Thanks guys, brain dead manuver on my part.

It's for an engine dyno ( out of car ). I was concerned about not having the right things plugged for the dyno but I think over the weekend I figured it out.

I plugged the top of the water pump, the two intake manifold holes ( either side of the thermostat housing ) and the outlet hose on the side of the water pump ( I think that feeds the heater core? ). So the only "goesintas and goesotats" are the main feeds to the radiator, so that should be fine.

Now the only "hole" I'm worried about now is the oil pressure sending hole in the rear top surface of the block, I am assuming that when they dyno it, they have an oil sending unit they plug into that? Anyone know.

I've got a call into the guys who are putting it on the dyno about fuel lines, I am again making an assumption that they have their own lines, since they told me to remove the fuel pump.

How about the rear vacuum line on the intake manifold, I am not assuming that to be plugged but rather fit with a vacuum assembly T.........

Cheers.

 

[Jack]

I've got a call into the guys who are putting it on the dyno about fuel lines, I am again making an assumption that they have their own lines, since they told me to remove the fuel pump..

There's where your best answers will come from ... the local engine dyno I use differs in that we run our own fuel pump. Ask your guys about all the stuff you don't know because it's already clear they do it differently than we do. Are they gonna have the parts on hand to tune your carb & distributor ... jets, springs etc? Or will you supply them? Good questions for your guys.