#7 piston broke. I've always kept the a/f ratio at 10.5:1 under boost and never had an issue with detonation; I guess it was just time for it to let go.
It actually didn't break that bad, over the last few months I noticed the engine spitting a little bit of oil out the sts setup, so I removed it and installed a filter in place of it.
That helped for a while, but last week it got worse, so I installed a catch can, well this week was worse, lol.
Did a compression check and all were 170 but #7, it came in at 100.

Pulled it apart yesterday and that wierd thing is, just the middle ring land cracked. You can see a little crack in the lower one and even a smaller one on the top, but the second one has a piece you can remove from it.

I ordered a piston and I'll slap it back together. I know, great opp. to build an engine, I just don't have time right now, I need it back together so I can get farmtruc back up here, it's waiting on the car hauler to come on up, about damn time!!!!
I will start on a 383 though, the av will get a new engine later this year.

Once it's done, we'll go test it out and see how the new trans and converter works out at the track.

later,
allen