Stewart 36113 Stage 3 High-Flow Mechanical Water Pump Ford SVO Small Block

The Stewart 36113 Stage 3 is a high-performance mechanical water pump designed specifically for Ford Small Block SVO race engine blocks, as well as 1970-78 Ford 221-351W engines without heater core lines. This severe-duty pump has been Stewart's most popular model for over 10 years, trusted by professional engine builders and race teams worldwide.

Premium Construction Features:

• Exclusive 356-T6 heat-treated aluminum casting with special ribbing for maximum strength and heat dissipation
• Precision-machined on CNC machining centers for exact tolerances
• 3/4-inch ball/roller bearings offering five times the strength of standard bearings
• 1/2-inch billet steel fan hub with dual bolt pattern for perfect pulley alignment and reduced vibration at high RPM
• High-flow impeller precision-installed to exacting tolerances for maximum coolant circulation
• 5.700-inch overall length with 3/4-inch shaft diameter
• Natural cast aluminum finish with zinc-plated rear cover and hardware

Performance Advantages:

• High-volume flow design provides equal coolant distribution to left and right cylinder heads
• Engineered for moderate to heavy racing applications and high-RPM operation
• Fan hub set screw ensures positive positioning and prevents slippage
• Clockwise rotation design

Each Stewart water pump is hand-assembled in the USA and backed by a one-year warranty. Recommended for any racing application where reliability and maximum cooling performance are critical.