Unfortunately I lost 5 out of 6 cylinders I checked due to the same thing. Didn't even bother to check the other two. What is so amazing about the turbo is, believe it or not I was still doing burnouts in 4hi with a dead motor and didn't even know it was over. It had pushed the dipstick out, but I thought a couple more runs wouldn't make any difference. Had 60 to 90lbs compression in those 5 cylinders and the turbo was still making power...unbelievable!

 

thats crazy it just goes to show what boost does for these motors. my truck still made good power when mine went it was just smoking alot out of the exhaust and each valve cover. my #7 cylinder only had 50 psi every other cylinder was fine.pulled the head and had a crack from one side to the other. Are you runing 370 forged bottom end now. if so what pistons and rods did you go with?