ACL Bearings 5M7299HXC-STD Race Series Main Bearing Set Standard Size Extra Clearance with Dowel

The ACL Race Series 5M7299HXC-STD is a high-performance main bearing set engineered for Chevrolet LS Gen III/IV V8 engines. Built on ACL's proven Race Series platform, this set features the HX specification — providing an additional 0.001" of oil clearance over standard — and the C suffix denoting a location dowel hole for precise bearing retention. These bearings are manufactured from ACL's Duraglide 780 tri-metal copper alloy construction, delivering the ideal combination of high strength, fatigue resistance, and seizure resistance demanded by performance and racing applications.

Key Features:

• HX Extra Clearance: +0.001" oil clearance over standard for high-performance and forced-induction applications
• Duraglide 780 Tri-Metal Construction: Multi-layer copper-lead alloy for superior strength and seizure resistance
• Location Dowel (C): Dowel hole ensures precise bearing positioning and prevents rotation in the housing
• Extended Grooves: Full 180° grooved uppers with partial groove in lowers to optimize oil flow and reduce interruption to connecting rod oil supply
• Increased Crush: Enhanced bearing retention within the housing bore
• Increased Eccentricity: Compensates for bore distortion at high RPM and assists in forming hydrodynamic oil films
• Enlarged I.D. Chamfers: Accommodates larger fillet radii found on performance crankshafts
• Tight Wall Tolerances: Precision-manufactured for consistent clearances and reliable fit
• Standard Journal Size (STD): Fits standard, unground crankshafts

ACL Race Series bearings are recognized throughout the motorsports world as a premier performance bearing brand, with a proven track record in championship-winning race engines across drag racing, road racing, and high-performance street applications. The 5M7299HXC-STD is the ideal choice for builders seeking maximum oil clearance control and bearing security in Chevrolet LS engine builds.