LS1 LS6 valves 2.00 8mm Stainless Steel swirl polished undercut Intake Valves & Stainless-steel 8mm 21-4N swirl polished 1.587 (larger then OEM LS3 size exhaust valve) Exhaust valves. Will fit LS cathedral port casting 243, 799, 035, 317, with proper machining for 2.00/1.587 valve sizes.
