Direct replacement for 2020-and-later L8T 6.6L gas engines used in Silverado HD trucks
Production cast-iron casting finished with 4.065" (103.25 mm) cylinder bores
Used with a 3.86-inch-stroke crankshaft in production engines to produce 400-cubic-inch (6.6L) displacement — the largest displacement in the LT engine family
9.240" deck height
Delivered bare, with regular-production six-bolt main caps