GMC diesel V6 Trucks 60° 478 CID (7.8 L) engines DIY maintenance and service manuals

Engines

GMC diesel V6 Trucks 60° 478 CID (7.8 L) D478 engine

It's an 477.7 in³ (7.83 L) internal combustion reciprocating V6 engine. It has bore/stroke ratio of 5.125 in × 3.86 in (13.018 cm × 9.8 cm), and uses 17.5:1 compression. This engine was rated 135 hp (100.67 kW) at 3200 rpm and 266 lbf⋅ft (360.65 N⋅m) of torque at 2000 rpm.
GMC diesel V6 Trucks 60° 478 CID (7.8 L) DH478 engine

It's an 477.7 in³ (7.83 L) internal combustion reciprocating V6 engine. It has bore/stroke ratio of 5.125 in × 3.86 in (13.018 cm × 9.8 cm), and uses 17.5:1 compression. This engine was rated 155 hp (115.58 kW) at 3200 rpm and 298 lbf⋅ft (404.03 N⋅m) of torque at 2000 rpm.

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