ACL Race Series main bearing set for the Chevrolet small block V8 in 305, 350, and 400 cubic-inch displacements, used across a wide range of GM cars and trucks including the Chevrolet Camaro, Chevelle, Corvette, Silverado, Suburban, Tahoe, and Cadillac Escalade, among others. Standard Size fits a factory, unmachined crankshaft journal. CT-1 coated for reduced friction and improved durability under racing loads.
Specifications:
- Type: Main Bearing Set
- Series: Race Series
- Coating: CT-1
- Size: Standard
- Engine Fitment: Chevrolet Small Block V8, 305/350/400 ci
- Vehicle Platform: GM cars and trucks (Camaro, Chevelle, Corvette, Silverado, Suburban, Tahoe, Escalade, and related models)
- Part Number: 8B663HC-STD
FAQ
What engines does this main bearing set fit?
It's built for the Chevrolet small block V8 in 305, 350, and 400 cubic-inch displacements.
What vehicles use this engine family?
The small block Chevy V8 was used across decades of GM cars and trucks, including the Camaro, Chevelle, Corvette, Silverado, Suburban, Tahoe, and Cadillac Escalade.
What does the CT-1 coating do?
CT-1 is ACL's proprietary coating that reduces friction and improves bearing durability under racing loads.
Does this fit a stock crankshaft?
Yes, Standard Size fits a factory, unmachined crankshaft journal.

