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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
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