That was pure 5.0 L race engine that was loosely based on the 4200. Falconer engines bought the design from GM after powertrain canceled the race engine. My guess is that the LS V8 honchos got their nuts in a knot that this funky 6 was making more power than the LS engines and got the program killed. http://www.falconerengines.com/bio/bio_l6.php
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
