Main >> Valves >> Manley >> Chrysler Manley Valves SB & BB Ford Series BUDGET Series   BUDGET PERFORMANCE Cost Conscious Engine Builder's Choice Superior to OEM materials Chrome Stems and Hard Tips Swirl Polished and Fully Machined EXTREME DUTY Series  EXTREME DUTY VALVES XH-426 Stainless Exhaust Material (2V/4V) XtremeAlloy Stainless Exhaust Material (3V) NK-842 Stainless Intake Material Chrome Stems and Hard Tips Swirl Polished and Fully Machined Stock Radius Triple Keeper Grooves RACE MASTER Series  RACE MASTER VALVES Unsurpassed by the Competition's Best XH-426 Stainless Exhaust Material NK-842 Stainless Intake Material Chrome Stems and Hard Tips Swirl Polished and Fully Machined Valves 11790 & 11791 have hard tips but no grooves. RACE FLO Series   289-302-351W FORD - RACE FLO VALVES XH-426 Stainless Exhaust Material NK-842 Stainless Intake Material Improved Flow with "Pro Flo" Underhead Chrome Stems and Hard Tips Swirl Polished and Fully Machined SEVERE DUTY Series  SEVERE DUTYŽ VALVES Simply the Best! XH-428 Stainless Exhaust Material NK-844 Stainless Intake Material Chrome Stems and Hard Tips Swirl Polished and Fully Machined STREET FLO Series  STREET FLO VALVES Chrome Stems and Hard Tips Swirl Polished and Fully Machined