Last May I broke a piston skirt on my 250, and I started a thread on how I should proceed. My block, which was scored, was already out to 60 thou and I asked your advice as to whether or not to go to 80 thou. The concensus was to go for another block as 80 thou was too much and would cause over heating problems when towing my trailer.
This is an update to let you know that I went for the standard bore block that my builder fortunately had under one of his benches. I had it bored 30 thou over and balanced, installed TRW pistons and Hastings rings and moved over my crank, cam, timing gears and heavy duty oil pump. Since the previous owner had already removed the intake port bosses in the head, I felt it was a good time to install a set of lumps from Larry to see what difference they would make in the performance. I just finished putting the car back together today. I'll let you know my feelings on the lumps over the next few weeks as I gradually begin the break in process.
Al