S.I. Stainless Steel valves AMC APPLICATIONS
Ideal for both competition and
street applications, they are similar in material and design
to 
's competition valves,
but manufactured in large production runs for all of the most
popular applications. Because of the fully automated (robotic)
production, SEV-series valves are priced lower than racing models,
yet feature the same premium quality stainless steel forgings,
chrome stems stellite tips and swirl-polishing. Color the SEV
Portflow valves “economical.” If you do not see a valve
you need in the Competition or Silver Line Series, use the Portflow,
as they are suitable for these applications.