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Old 01-20-2008, 03:37 PM
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Which GM HEI? does it have a mechanical and vacuum advance? I ask since the HEI that came in the computer cars like 84 camaros were computer controlled and had no advance without computer function so overheating becomes a issue as does massive power loss. Other factors that can influence overheating is carb too lean, vacuum leaks, and believe it or not, the resivoir not being in use and capped off at the radiator and even incorrectly filling the cooling system, things I never would imagine can cause one to overheat will, seen it too many times now. If the hoses are old and without a internal spring its also possibly they could be collapsing.
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