New GM Chevy Pontiac S10 2.2L OHV Pushrod Cylinder Head – Cast #391S (1994-1997)

New GM Chevrolet Pontiac 2.2L OHV Cylinder Head – Casting 391S (1994–1997)

High-Quality OEM Replacement for Reliable Engine Performance

This is a brand-new cylinder head designed for GM 2.2L OHV pushrod engines featuring casting number 391S. Engineered to meet or exceed OEM specifications, this head comes fully assembled with valves and springs to ensure a seamless, direct-fit installation. It provides a reliable solution for restoring airflow, combustion efficiency, and long-term durability to your vehicle.

🛠️ 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: 2.2L OHV L4 (Pushrod)
• Casting Number: 391S
• Material: Cast Iron
• Condition: Brand New
• Included Components: Fully loaded with valves, springs, and seals
• Core Return Required

🚛 Fitment Data

Common Applications:

• Chevrolet Cavalier: 1994–1997 Chevrolet Cavalier (2.2L OHV)
• Pontiac Sunfire: 1994–1997 Pontiac Sunfire (2.2L OHV)
• Chevrolet Corsica: 1994–1997 Chevrolet Corsica (2.2L OHV)
• Chevrolet S-10: 1994–1997 Chevrolet S-10 (2.2L OHV)