One Groove Aluminum Alternator Pulley With Nose Cone Cover Billet style Alumium single 1 Groove V belt Compatible with GM SBC Chevrolet 283 350 400 Chevy Small Block 262 4.3 L 265 4.3 L 267 4.4 L 283 4.6 L 302 4.9 L 305 307 5.0 L 327 5.4 L 350 5.7 L 400 6.6 L 1955-1985 LActrical Alternator pulley Aluminum Billet style compatible with GM bbc sbc Chevy Holden Pontiac Oldsmobile Ford Cady hot rod single 1 groove V belt