Lobe separation is 109 on this cam. Duration @ 0.050 230 I/E. Valve lift is nothing great 0.544, intake center line 106.jeff swisher wrote: ↑Tue Oct 17, 2017 6:02 pmI have ran huge cams with low compression and never had your problems.
I did build a 60 over 350 that ran hot no matter what. 200-215 almost all the time.
I tried different fans and mechanical with electric pushers.
Radiator was a rebuilt 3 core copper brass Larger than factory.
It began leaking and I got a new one from the local parts store.
With the new one it ran 140 F I was amazed..Both of them looked to flow the same amount of water by looking into them with cap off.
So no more rebuilt ones for me.
I assume the fan blades are not all tucked inside the shroud..As you know you need some of the blade to be outside the shroud.
I seen a guy install reverse rotation pump on regular rotation fan.. spun the pump backwards.
I would resort to pulling the back of the water pump cover off and take a look.
Have you tried No thermostat? I boil my thermostats to check them and the flat washer area gets a hole or 3 drilled into it.
My 57 chevy runs warmer than I like down the highway at 85 MPH and I resorted to propping the rear of the hood open 1"
That fixed it. Could not expel the air that was being passed through the radiator with all the inner fenders and the newer style exhaust manifolds blocking the exit.
Radiator is brand new double pass 3 rows of 1" tubes ( = 6 rows of brass radiator core material ), cooling system holds 7 gallons! E fan is well shrouded and has a ring around the outside of the blades so has it's own fan circle 18", pulls 60 amps to start, 3800+ cfm.
Waterpump has correct rotation and is a mechanical Meziere advertising 6-8 gpm more than any competitor at off idle, all machined parts so tightest tolerance you can get. Behaved the same with 2 different 55gpm electric pumps. Not using thermostat bypass hose, heater hoses has shut off so no looping engine coolant. Pump is overdriven w/common size pulleys.
No thermostat, 1 3/4" hoses in and out and 1 3/4" waterneck for intake coolant outlet to match water pump inlet size.
No combustion leaks. No unusual cylinder wear. Correct but improved Cometic MLS head gasket design for coolant flow. ( gasket change/upgrade did make this system cool better but it is not fixed yet.
Running open exhaust w/about 4 feet of pipe on shorty type headers for this last drive.