Quote:
Originally Posted by chevelleshack
Not much of a mopar guy but does it have the heat crossover in the intake ? Had the same problem with a SBC & ended up being percolation of the fuel in the bowls & would boil over due to today's less than stellar fuel. Had the same symptoms also . Blocked off the heat passages & all was good after that .
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Wow, that reminds me: A friend had a 440 Challenger and it turned out there was an internal crack in the exhaust crossover from the crossover to the inside of the intake runner. When it got warmed up, the crack would enlarge and create an enormous internal vacuum leak, killing the engine.
Got any extra intakes?