GM Marine Chevrolet Truck TBI 5.7L Cylinder Head – Casting Numbers #193/217/191

Remanufactured GM Chevrolet 5.7L TBI Marine & Truck Cylinder Head – Casting #193 #217 #191

OEM-Quality Replacement for Marine and Truck TBI Engines

Restore your engine’s peak volumetric efficiency and cooling performance with this professionally remanufactured cylinder head, specifically engineered for the GM 5.7L (350) Throttle Body Injection (TBI) V8 engine series. Precision-machined to meet or exceed original equipment (OE) dimensional tolerances, this head is a direct-fit solution for casting numbers #193, #217, and #191. Whether utilized in high-torque Chevrolet truck applications or demanding GM Marine environments, this casting is built to handle the heavy duty cycles and thermal stresses of professional-grade operation.

Each cylinder head undergoes a rigorous multi-stage remanufacturing protocol—including ultrasonic cleaning, precision deck resurfacing, and high-pressure leak testing—to eliminate potential failure points such as micro-cracking or thermal warpage. This unit arrives “Fully Loaded” and ready for immediate installation, pre-assembled with high-quality valves and calibrated springs. Our remanufacturing process ensures an absolute deck surface finish for a superior head gasket seal, effectively restoring factory-spec compression and throttle response. This is the definitive, cost-effective solution for owners of Silverado, Sierra, and Marine platforms (Mercruiser/Volvo Penta) looking for long-term reliability.

🛠️ In-House Machining Process

• Cleaning: Fully disassembled and thermally cleaned.
• Soda Blasted: Castings are blasted with Sodium Bicarbonate. Because baking soda is water-soluble, there is zero risk of abrasive media clogging oil passages.
• Pressure Testing: Tested to 60 PSI to ensure no cracks or porosity leaks.
• Surfacing: All heads are resurfaced on our Rottler S85A for a precision gasket-sealing surface.
• Valve Job: Multi-angle valve job performed; every port is Vacuum Tested to ensure valves are seated 100% airtight.

📊 Technical Specifications

• Engine Size: 5.7L / 350 CID
• Engine Type: V8 TBI (Throttle Body Injection)
• Casting Numbers: #193, #217, #191
• Material: Cast Iron
• Condition: Remanufactured to OEM Specs
• Applications: Marine and Truck
• Each Cylinder Head Includes: Valves and Springs Installed

🚛 Fitment Data

Common Applications:

• Chevrolet Blazer/Jimmy: 1987-1994 Chevrolet Blazer/Jimmy (5.7L)
• Cadillac Brougham: 1990-1992 Cadillac Brougham (5.7L)
• Chevrolet Caprice: 1989-1993 Chevrolet Caprice (5.7L)
• Chevrolet 10 Pickup: 1987-1987 Chevrolet 10 Pickup (5.7L)
• Chevrolet 10 Van: 1987-1995 Chevrolet 10 Van (5.7L)
• Chevrolet 1500 Pickup: 1988-1995 Chevrolet 1500 Pickup (5.7L)
• Chevrolet 20 Pickup: 1987-1988 Chevrolet 20 Pickup (5.7L)
• Chevrolet 20 Van: 1987-1995 Chevrolet 20 Van (5.7L)
• Chevrolet 2500 Pickup: 1988-1995 Chevrolet 2500 Pickup (5.7L)
• Chevrolet 30 Van: 1987-1990 Chevrolet 30 Van (5.7L)
• Chevrolet 30 Van: 1995-1995 Chevrolet 30 Van (5.7L)
• Oldsmobile Custom Cruiser: 1992-1992 Oldsmobile Custom Cruiser (5.7L)
• Cadillac Fleetwood: 1990-1993 Cadillac Fleetwood (5.7L)
• GMC 1500 Pickup: 1987-1995 GMC 1500 Pickup (5.7L)
• GMC 1500 Van: 1987-1995 GMC 1500 Van (5.7L)
• GMC 2500 Pickup: 1987-1995 GMC 2500 Pickup (5.7L)
• GMC 2500 Van: 1987-1995 GMC 2500 Van (5.7L)
• GMC 3500 Van: 1987-1990 GMC 3500 Van (5.7L)
• GMC 3500 Van: 1995-1995 GMC 3500 Van (5.7L)
• Buick Roadmaster: 1992-1993 Buick Roadmaster (5.7L)
• Chevrolet 10: 1987-1988 Chevrolet 10 (5.7L)
• Chevrolet 1500: 1987-1995 Chevrolet 1500 (5.7L)
• Chevrolet 20: 1987-1988 Chevrolet 20 (5.7L)
• Chevrolet Tahoe: 1995-1995 Chevrolet Tahoe (5.7L)
• GMC Yukon: 1992-1995 GMC Yukon (5.7L)