High strength steel roller which feature full roller action and durability. Gears are heat treated and have 3 keyways for timing adjustment. Original True Roller Timing Set with Torrington needle bearing, 1955 and newer Small Block Chevrolet, V6 200,229,262,4.3Z without balance shaft, V8 262,265,283,302,305G & H,307,327,350L and 400.
