I'm going to start with a Garrett GT40 turbo. As for HP .. well once I get the initial teething problems out of the way, I'll turn up the boost until the 4l70E transmission starts to show signs of distress then back off. At that point I guess over the winter it will be time to build a 4l80E and a motor plate.
The engine internals (pistons, rods, sleeves) were spec'd for 800hp. More than that and I think the lower end might start distorting and showing up in the main bearings. Folks in the know say Self built a monster main cap girdle that ties into the pan rail for high HP app's ( Cunningham's motor). Too bad Glen is very quiet about these things.
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
