ACL Bearings 5M7298H-20 Race Series Main Bearing Set Undersize - 020

The ACL Bearings 5M7298H-20 Race Series Main Bearing Set is engineered for high-performance and racing applications in Chevrolet LS/LQ V8 engines including 4.8L, 5.3L, 5.7L, and 6.0L displacements. This H-Series bearing set features .020" undersize dimensions for engines with reground crankshafts.

Advanced Race Engineering:

• Tri-Metal Construction: Features lead, tin, copper, and nickel composition for superior strength and exceptional seizure resistance
• Increased Eccentricity: Improved shape adaptation compensates for bore distortion during high-RPM operation and assists in hydrodynamic oil film formation
• Enhanced Crush: Higher radial contact pressure improves bearing retention, locks bearings securely into housing, and maximizes heat transfer
• No Flash Plating: Back surface design further improves bearing retention and heat dissipation for consistent performance
• Precision Tolerance: Manufactured to exacting micron-level tolerances ensuring consistent wall thickness and reliable clearances
• Optimized Oil Grooves: Full 180-degree grooved uppers with matching partial grooves in lowers reduce interruption to oil supply
• Oversized Chamfers: Accommodate larger fillet radii on performance crankshafts

ACL Race Series bearings are the standard choice for record-setting and championship-winning race engines across NASCAR, IHRA, NHRA, drift racing, and road racing competitions. With over 50 years of manufacturing experience, ACL delivers the precision engineering and metallurgy required for extreme endurance under harsh high-performance conditions.

Note: The "H" suffix designates standard oil clearance. Engine bearings require proper tolerance measurements before purchase. Consult a professional engine builder if unsure of required bearing size.