Meets or exceeds all original equipment specifications Unsurpassed quality for you can trust Validated for fit, form and function Designed for repair and everyday environment CHEVY SMALL BLOCK 283-305-327-350-400 TIMING TAB W/ ADJUSTABLE POINTER - BLACK Black steel timing tab with adjustable pointer fits Chevy 283-305-327-350-400 small block engines with an 8" harmonic balancer.