19436495 L8T Cylinder Block, Replaces 19420904
L8T Cast Iron block
- 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’’ stroke crankshaft in production engines to produce 400 cu in. (6.6L) displacement — the largest displacement in the LT engine family
- 9.240’’ deck height
- Delivered bare with regular-production six-bolt main caps
- Regular-production oiling circuit
- Includes provisions for direct fuel injection
