Vortec 4.8L V8

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The 4.8L engine offers a wide array of benefits:

• Standard on 2500HD Work Van, 3500 Super Heavy-Duty Work Van and the 3500 Commercial Cutaway 139-inch wheelbase
• 279 horsepower at 5200 rpm and 294 lb.-ft. of torque at 4500 rpm(1)
• 258 horsepower at 4600 rpm and 294 lb.-ft. of torque at 4500rpm(2)
• High-capacity, internally balanced cast-iron crankshaft features undercut and rolled fillets.
• A composite intake manifold with equal-length runners helps provide efficient combustion
• Cast-aluminum cylinder heads
• Valvetrain that features roller rocker arms and hydraulic roller lifters
• The ability to travel up to 100,000 miles before the first scheduled spark plug replacement, thanks to iridium-tip spark plugs
• The Vortec 4.8L can also go up to five years or 150,000 miles (whichever comes first) before its first scheduled coolant change(3)

1 Vehicles less than 10,000 pounds.

2 Vehicles more than 10,000 pounds.

3 Maintenance needs vary with different uses and driving conditions. See the Owner's Manual for more information.