Manley Performance Big Block Chevrolet Severe Duty Valves - Stem Diameters 2.350,+.350

- Severe Duty Valves

- 5/16" (.311") Stem Diameters

- These .311" stem valves are ONLY available with Bead Loc keeper grooves. Bead Loc valve locks are REQUIRED.

- Intake Material 

- Head Diameter 2.350

- Stem Diameter .3110

- Installed Height .350 Longer

- O/A Length 5.594

- Tip Length .250

- Underhead Angle/Radius 10° x 3/8"

- Margin .050

- Seat Width .080

- Wgt/grams 135

- Top of Head 5° Dish