Fits Ford 10.5, 11" patterns, Center hole diameter 1.751", 50 oz/in imbalance, 164 tooth ring gear, Clutch bolt patterns: Ford Long Style 10.5" clutches with 11.375" bolt circle, 5/16-18 thread, Ford Long Style 11" clutches with 12.375" bolt circle, 5/16-18 and 3/8-16 thread.
