Manley Performance Valve-Big Block Chevrolet Stem Diameters 2.300

- Severe Duty Valves 11/32" Stem Diameters

- NK-844 Stainless Intake Material

- Chrome Stems and Hard Tips

- Swirl Polished and Fully Machined

- Head Diameter 2.300

- Stem Diameter .3415

- Installed Height Stock

- O/A Length 5.244

- Tip Length .250

- Underhead Angle/Radius 12° x 3/8"

- Margin .050

- Seat Width .100

- Wgt/grams 143

- Top of Head 7° Dish