LS3 HOLLOW INTAKE VALVES, ONLY 88 GRAMS. THE ZL1 SPEED SHOP HAS RUN THESE IN 1000+HP ENGINES WITH AROUND  500 LBS SPRING PRESSURE--GOOD STUFF. BACK CUT HIGH FLOW TOO!

Valve Head Diameter (in):2.165 in.

Valve Head Diameter (mm):54.991mm

Undercut Stem:Yes

Valve Stem Diameter (in):0.314 in.

Valve Stem Diameter (mm):8.00mm

Valve Tip Length (in):0.250 in.

Valve Tip Length (mm):6.350mm

Valve Material:Stainless steel

Lock Groove Quantity:1-groove

Lock Groove Style:Conventional

Quantity:Sold individually.

When it's time for valves, don't cut corners--get genuine Chevrolet Performance replacement valves. These valve are designed to increase gas flow for more power. Strengthen your valvetrain with these Performance replacement valves.