Large Thrust Bearing Upgrade for RB Engines 1974 & Later - STD

We offer our thrust bearing UPGRADE as an option to convert any small thrust main bearing set to large thrust. This kit inlcudes the thrust beaing upper and lower shells ONLY, allowing you to replace the small thrust bearings in most standard main bearing sets with large ones. This helps to increase available surface area, which is especially helpful in manual transmission cars which tend to put a large amount of pressure pushing forward onto the crankshaft by the clutch and pressure plate, etc. These will fit RB (tall deck) engines only, and LATER 1974-79 blocks only. They WILL NOT FIT 1973 and earlier engines. These are only available in STANDARD size.