ACL Race Series Performance Main Bearing Set (0.010" Undersize) - 5M829H-10

Engineered for high-output street and race applications, ACL Race Series main bearings provide the superior load capacity and durability required under extreme RPM and cylinder pressures. Designed with precision tolerances and advanced metallurgy, this 0.010-inch undersize set is crafted for ground or machined crankshafts on Big Block Chevrolet V8 engines.

Vehicle & Engine Compatibility (New Zealand)

This high-performance main bearing set is designed to fit Big Block Chevy V8 applications commonly found in classic American muscle cars, hot rods, drag cars, and specialty marine conversions in the New Zealand market:

• Chevrolet Big Block V8 (396 ci / 6.5L): 1965–1972 Models
• Chevrolet Big Block V8 (402 ci / 6.6L): 1970–1972 Models
• Chevrolet Big Block V8 (427 ci / 7.0L): 1966–1993 Models
• Chevrolet Big Block V8 (454 ci / 7.4L): 1970–1993 Models
• Chevrolet Big Block V8 (502 ci / 8.2L): Performance & Mercruiser Marine Applications

Note: This set features a 0.010 in undersize specification and is intended for use with a crankshaft ground down accordingly. Please verify your journal measurements and machine shop specifications before assembly.

Key Features & Benefits:

• High Load Capacity: Tri-metal construction with a hardened steel back provides maximum fatigue resistance.
• Optimized Oil Clearance: Engineered with precision wall tolerances to maintain reliable oil film thickness under high loads.
• No Flash Plating: Bearings are manufactured without flash plating to ensure better seating and surface contact right out of the box.
• Ideal Eccentricity: Provides improved hydrodynamic oil film formation at high RPM.

Specifications:

• Part Number: 5M829H-10
• Series: ACL Race Series (H-Series equivalent)
• Crankshaft Undersize: 0.010 in (0.25 mm)
• Tunnel Housing Bore: 2.9370 in – 2.9380 in (74.600 – 74.625 mm)
• Bearing Type: Main Bearing Set (Kit)
• Groove Style: Grooved Upper / Lower (Half Groove)

Cross References:

• Clevite / Mahle: MS829H-10 / MS-829H-10
• Interchange: Chevrolet / GM Big Block Standard Main Set (.010 Oversize/Undersize)

Supported Engine Applications List

• Chevrolet 396 cu. in. (6.5L) V8 Big Block OHV
• Chevrolet 402 cu. in. (6.6L) V8 Big Block OHV
• Chevrolet 427 cu. in. (7.0L) V8 Big Block OHV
• Chevrolet 454 cu. in. (7.4L) V8 Big Block OHV
• Chevrolet 502 cu. in. (8.2L) V8 Big Block / Mercruiser Marine