sentences:  Alongside GMC V6 and Chevrolet 427 V8 gasoline engines, the H/J trucks were available with Cummins, Detroit Diesel, and Caterpillar diesel engines.The H/J-Series formed the basis of the C(later N)/M-series trucks; using a longer 114-inch BBC to accommodate larger diesel engines).In 1977, the N/M-series was replaced by the Class 8 Chevrolet Bison/GMC General semitractor.