Is this a manual trans vehicle? then I agree that IF the cap is taking all the thrust lets do more fine tuning . is the cap offset to the front or the rear? if it is an automatic then the crank floats, unless u have ballooned the convert. and if your cap is directly aligned to the block the clearance = .018" = wide. so maybe Chrysler machined that block perfect to get the .002-.007" as in the service man. for 340