Originally Posted by Car and Driver
Standard 911s use a two-piece engine block split down the center line of the crankcase. On the GT3 and Turbo, itís a four-piece unit with crankcase parts cast separately, which are then bolted to the cylinder blocks. This is a stiffer arrangement, which can handle more power, and was originally developed for racing applications.
not like our blocks are major hurdles when it comes to power...but its always nice to look to see what porsche is doing with their engines so we can gain some inspiration...