ACL Bearings 5M7298HC-10 Race Series Coated Main Bearing Set 0.010" Undersize GM LS

The ACL Bearings 5M7298HC-10 is a Race Series coated main bearing set designed for GM LS engines including 4.8L, 5.3L, 5.7L (LS1/LS6), and 6.0L (LS2) applications.

These bearings combine ACL's proven Race Series tri-metal construction with Calico's renowned CT-1 dry film lubricant coating. The CT-1 coating helps reduce friction and abrasive wear while providing intermittent dry lubrication during critical conditions like cold starts and oil starvation situations. The coating is not affected by dust or dirt and is specifically engineered to withstand the extreme conditions of high-performance engines.

Race-Proven Construction:

• Multi-layered tri-metal copper alloy construction with hardened steel backing for exceptional strength and seizure resistance
• Manufactured to exacting tolerances ensuring reliable fit and consistent clearances
• Increased eccentricity to improve shape adaptation and compensate for bore distortion at high-speed operation
• 3/4 groove (270-degree) design for optimum oil supply and distribution
• Enlarged chamfers to accommodate larger crankshaft fillets
• Increased crush and tighter wall tolerances for better seating and stability

ACL Race Series bearings with CT-1 coating have demonstrated oil temperature reductions of 15-20°F compared to standard bearings. The dry film lubricant coating provides critical protection during intermediate oil starvation conditions, giving professional engine builders increased confidence in strength, durability, and embeddability. Perfect for street performance, road racing, drag racing, and other demanding applications where reliability under high RPM and extreme loads is essential.

Made in Australia by ACL Bearing Company, a trusted leader in performance engine bearing technology with decades of proven motorsport experience.