Man, she was running just great this past Friday and Saturday. Running several hours both days on the highways and byways.
Then on Sunday afternoon she started having a quiet little metal hammer ring whenever I pushed hard on the accelerator.

As the day wore on, the hammering got louder and more metal-like! I'm talking a real loud clacking hammer whenever you hit the pedal. Once you are cruising at speed and not pushing on the pedal, the sound is not there and the car drives fine.

But as sooon as you ask for a little power with the pedal she starts clackity hammering away!! Man, I had to limp home and put her to bed. Yesterday I verified oil level (new oil and filter last month) and checked everything obvious, but five minutes after cranking her up the hammer sound kicked in again.

Can't tell where its coming from, but it seems deep down in the block. It is nothing loose or external to the block itself. Give me some thoughts and ideas here friends. I am not an engine block pro by any means. I figure a compression test would be as good a place to start as anywhere, eh?