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Im working on my sons 1970 340 Dart and about to pull my hair out. First off its a 340 thats 30 over 10:2:1 compression J heads cut out to 202 valves, Mopar Performance cam 280/280 @50 238/238 centerline 110 and lift is 474/474, Wieand 8007 dual plane intake and Eldelbrock 1406 Carb. The...