1964-1972 Chevrolet Chevelle / El Camino, 1967-1969 Camaro, 1968-1974 Nova, 1966-74 Corvette, 70-73 Impala Flywheel Inspection Cover. Bolts to the aluminum bell housing. 11" inspection cover for all Chevrolet models. Comes black powder coated. Hole measures approximately 2 3/4". Fits the 11" 3899621 Chevrolet bell housing issued on all Camaro / Chevelle / Impala / Corvette / Nova with big block 396 / 427 / 454 Yenko / Copo / ZL1 and also small block like 302 / 350 or 400 with 11" clutch; Z28 / Yenko / Deuce models. Fits most 1964-81 except for 1962-67 Nova. 4 speed only 11inch Clutch GM General Motors.