New GMC Chevrolet Truck 454 7.4L BBC Cylinder Head – Cast Iron 1996-2000 # 279 (Bare Casting)

New GMC / Chevrolet Truck 7.4L 454 Cylinder Head – Cast Iron #279 Casting (Bare)

Reliable New OEM-Quality Replacement Cylinder Head

This brand-new cast iron cylinder head is a professional-grade replacement for 1996–2000 GMC and Chevrolet trucks equipped with the 454 7.4L engine. Featuring the heavy-duty #279 casting, this unit is engineered to meet or exceed OEM specifications for long-term durability in demanding towing and hauling applications.

🛠️ In-House Machining Process

• Debris-Free Preparation: Every new casting is chemically cleaned and blown out to remove all residual machining oils, metal shavings, and manufacturing debris. This ensures your oiling system remains uncontaminated from the first start-up.

• In-House Precision Machining: Unlike “shelf-stock” heads, we perform all final machine work in-house. This includes final guide sizing and precision valve seat cutting to ensure perfect geometry and clearances before the head reaches the assembly bench.

• Pressure & Integrity Testing: To go beyond the factory standard, we pressure-test every head to 60 PSI. This verifies that the casting is free of porosity leaks or internal defects that could compromise the cooling or oiling systems.

• Dimensional Inspection: Our technicians perform a multi-point inspection of the gasket-sealing surface and bore alignment. This ensures the head is perfectly flat and meets tight OEM tolerances for a flawless fit.

• Professional Assembly & Setup: Valvetrain components are installed and verified in a clean-room environment. We check spring heights and seal seating to ensure the assembly is balanced and ready for high-performance use.

• Vacuum-Seal Verification: Every intake and exhaust port is Vacuum Tested. This guarantees a 100% airtight seal between the valves and seats, ensuring maximum compression and peak performance right out of the box.

📊 Technical Specifications

• Engine Size: 7.4L (454)
• Casting Number: 279
• Material: Cast Iron
• Condition: New
• Type: Bare (Cylinder Head Only)
• Year Range: 1996–2000
• Core Return Required

🚛 Fitment Data

Common Applications:

• Chevrolet 2500 Pickup: 1996–2000 Chevrolet 2500 Pickup (8-454 (7.4L))
• Chevrolet 30 Van: 1996 Chevrolet 30 Van (8-454 (7.4L)) 30 HD
• Chevrolet 3500 Pickup: 1996–2000 Chevrolet 3500 Pickup (8-454 (7.4L))
• Chevrolet Express 3500 Van: 1996–2000 Chevrolet Express 3500 Van (8-454 (7.4L))
• GMC 2500 Pickup: 1996–2000 GMC 2500 Pickup (8-454 (7.4L))
• GMC 3500 Pickup: 1996–2000 GMC 3500 Pickup (8-454 (7.4L))
• GMC 3500 Van: 1996 GMC 3500 Van (8-454 (7.4L)) 3500 HD
• GMC Savana 3500 Van: 1996–2000 GMC Savana 3500 Van (8-454 (7.4L))
• Chevrolet Suburban 2500: 1996–1999 Chevrolet Suburban 2500 (8-454 (7.4L))

Please Note: Parts, marine, and performance items carry specific warranty limitations — please review our full Warranty Policy for details.