I was in the same boat with my 347. I am now using a 3-core radiator, 17in permacool fan, electric fan in front of radiator, 2 quarts of engine kool, 160 thermostat. I just got mine under control by putting back on my stock waterpump pulley instead of the underdrive waterpump pulley. Rick91gt told me some info on where to get a high flow water pump for only 69 dollars. I am sure this will help with your heating problems.
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347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del, rear seat del.
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