Chevy SBC 350 1.5 Ratio 7/16" Ultra Black Chromoly Roller Rocker Arms Set They include a drain plug

They include a drain plug for clean and easy fluid changes

the IAC valves adjust the airflow to improve motor idling

Our EFI systems provide excellent throttle response throughout the RPM range along with smooth engine operation

Speedmaster pulley systems work with any type of cylinder head or manifold configuration

Speedmaster offers their version

Chevy SBC 350 1.5 Ratio 7/16" Ultra Black Chromoly Roller Rocker Arms Set They include a drain plugSpeedmaster roller rockers are available in various ratios, so you are good to go. They feature greater strength and durability, capable of withstanding valve spring load. .