Main bearings STD Chevrolet 1997+ (4.8L, 5.3L, 5.7L, 6.0L) Gen III V8 ACL Aluglide ACL-5M7298A-STD

Chevrolet 1997+ STD main bearings (4.8L, 5.3L, 5.7L, 6.0L) Gen III V8 ACL Aluglide ACL Race shells are designed to work in the most extreme conditions and the most demanding engines. ideally suited to the engine. The advanced technological process allows the bushing to adapt to the deformation occurring at high revolutions and helps in the formation of hydrodynamic oil films. also in several other dimensions: STDX -0.025 mm (looser than nominal) STD +0.000 mm (nominal) +0.025 mm (tighter than nominal) +0.25 mm (first shaft grinding) +0.50 mm (second shaft grinding)