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...