GM 8.875in. 12 Car Bolt 4.10 Full Spool For Use With 30 Spline Axles; For Use With 4.10 Up Gears; Requires Use; Of C-Clip Eliminator Kit; Not Recommended For Street Use CHEVROLET EL CAMINO BASE CUSTOM 1964 1965 1966 1967 1969 1970 1971 1972 1973 3.2L (194) 3.8L (230) 4.1L (250) 4.6L (283) 4.6L (4638cc) 5.3L Chevy Small Block (327) 5.4L Chevy Small Block (327) 5.7L (350) 5L Chevy Small Block (307) 6.5L Chevy Big Block (396) 6.6L Chevy Big Block (402) 6.6L Chevy Small Block (400) 7.4L Chevy Big Block (454) GAS Motive Gear Motive Gear GM 8.875 Inch 12 Car Bolt 4.10 Full Spool - FS12-30 FS12-30 Differentials