Clevite Tri Armor GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set

Clevite is known for making well-built engine bearings, and this Tri Armor main bearing set is a solid option for rebuilding or repairing your 1970-1980 GMC or Chevrolet vehicle with a 400 cubic inch (6.6L) engine. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. Proper main bearing function is key to the overall health and longevity of your engine.

This set features Clevite's Tri Armor coating, an advanced surface treatment designed to improve wear resistance and reduce friction. This coating helps protect the bearings during the critical break-in period and throughout the engine's life, especially under demanding conditions. The bearings are manufactured to precise tolerances, ensuring a proper fit and function for engines like those found in the Chevrolet Impala, GMC C1500, and many other passenger cars and trucks from the 1970s.