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Shakercars's 1972 Trans Am

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Found 1 result

  1. I need help figuring out why my 400 is overheating It is a 1987 gen3 Fire-bird Formula (reFormulated) with a 1971 Pontiac 400 block casting #481988 bored .030 over with Keith Black dish pistons, crank has been turned .020/.020. Rotating assembly has been balanced, Number 16 heads with new valves and springs, 72cc cambers. Howard's CAM in.482 ex.470, true dual exhaust, new water pump with cast impeller, divider plate clearance set as close as possible to impeller. New 4 core aluminum radiator with 2 10 inch electric fans pulling air and 2 12 inch electric fans pushing air. A/C condenser removed to allow maximum air flow. Removed thermostat, still overheating. Installed a flow restrictor hoping the water was flowing to fast through the radiator for efficient heat transfer. No still HOT. New 180 degree thermostat. With each change it continued to overheat, although the time it takes to overheat varied. I really hope someone here has an idea what I am facing.
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