ACL 8B663H-STD Race Rod Bearing Set for Chevy V8 305-400

Regular price: $101.95
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Product Specification:

SKU:ACL8B663H-STD

MPN: 8B663H-STD

UPC: 9315726273234

Weight: 0.9 lb

Inventory: 6

Type: Bearings

Vehicle Fitment

1997-2019 Chevrolet Silverado 1500/2500/3500 (4.8L, 5.3L, 5.7L, 6.0L V8)
1997-2019 GMC Sierra 1500/2500/3500 (4.8L, 5.3L, 5.7L, 6.0L V8)
1997-2019 Chevrolet Tahoe/Suburban (4.8L, 5.3L, 5.7L, 6.0L V8)
1997-2019 GMC Yukon/Yukon XL (4.8L, 5.3L, 5.7L, 6.0L V8)
2004-2014 Cadillac CTS-V (5.7L, 6.0L V8)
2004-2014 Pontiac GTO (5.7L, 6.0L V8)
2000-2014 Hummer H2 (6.0L V8)
2000-2014 Chevrolet Express/GMC Savana Vans (4.8L, 5.3L, 5.7L, 6.0L V8)
Other legacy makes: Buick, Cadillac, Isuzu, Saab (where LS V8 was used)

Features

0.001" undersize for precision clearance
Tri-metal construction for superior durability
High-strength overlay plate for fatigue resistance
Designed for high RPM and heavy-duty use
Chamfered edges for improved oil flow
Engineered to meet or exceed OEM specifications
Optimized for both street and track applications
Compatible with crankshafts ground to 0.001" undersize

Specifications

Material: Tri-metal (Steel back, Copper-lead alloy, High-strength overlay)
Size: 0.001" undersize
Engine Compatibility: GM LS-series V8 (4.8L, 5.3L, 5.7L, 6.0L)
Chamfer: Yes
Oil Groove: 270-degree
Fitment: Main bearing set, front and rear

Included Components

1x Main Bearing Set (4 pieces)

Product Description

The ACL 8B663H-STD Main Bearing Set is precision-engineered for GM LS-series V8 engines used in Chevy, GMC, and other legacy vehicles, covering model years 1997-2019. With a 0.001" undersize, it ensures optimal clearance and performance for crankshafts ground to this specification.

Constructed with a tri-metal design - including a steel back, copper-lead alloy, and high-strength overlay plate - these bearings provide exceptional fatigue resistance and durability. They are designed to handle higher RPMs and increased stress, making them ideal for high-performance or heavy-duty applications.

This main bearing set meets or exceeds OEM specifications, offering reliable performance for street, track, and racing engines. Installation is straightforward for mechanics familiar with LS-series engines, and it supports a wide range of trims, platforms, and legacy GM makes.