Chevrolet 265, 283, 302, 327 Race Series ACL STD main bearings ACL-5M429H-STD

Main bearings STD Chevrolet 265, 283, 302, 327 Race Series ACL ACL Race bearings are designed to work in the most extreme conditions and the most demanding engines.Due to many years of experience in the production of bushings, each set is perfectly matched to the engine. The bushing adjusts to the deformation occurring at high revolutions and helps in the formation of hydrodynamic oil films. This technology, combined with the advanced geometry of the bushings, makes them ideal for heavily stressed engines. Most bushings are also available 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)