Lemme ask this, ive never changed a water pump on a 340 before (builder assembled it with the new water pump) is it a pain in the ***? Do i have to worry about coolant getting into the oil upon changing it
When you pull some of the bolts, if the gasket seal between the timing cover and engine "cracks" you are going to have seepage. Just drain the thing and be done with it. You likely need new (clean) coolant, anyhow.
Be careful and "work" the bolts if they feel tight. Some of the LOOOOONNNGGG bolts will corrode and attempt to "unite" with the sides of the holes in the timing cover. Then, they break, and you get to pull the timing cover to fish it / them out
If you don't have a factory service manual, wander over to MyMopar and download one, free. Some of them there came from the guys on here