Clevite MS1039HX Series BBF Clevite 77 H-Series Extra Clearance Main Bearings

Clevite 77 Tri-Metal Connecting Main Bearing Set for Big Block Ford. Narrowed for clearance with aftermarket high performance crankshafts with larger fillet radius. Suitable for all forms of racing engines, H-Series bearings offer a medium level of eccentricity, a high crush factor with hardened steel backs and thin bearing overlay.

The H-Series bearings have enlarged chamfers at the sides for greater crank-fillet clearance and are made without flash plating for better seating.

• .001″ Oversize for extra clearance
• 1/2 Groove
• Tri-Metal
• Use H-Series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range