Manley 12306-8 Race Flo Intake Valve Set 2.050" Head .3133" Stem +.100" Length

Featuring a 2.050" head diameter and .3133" stem diameter with a +.100" over-stock overall length of 5.035", these valves are purpose-built for bracket racing, oval track, drag racing, and high-performance street engines operating below 8,000 RPM.

Key Features:

• Head Diameter: 2.050"
• Stem Diameter: .3133"
• Overall Length: 5.035" (+.100" longer than stock)
• Tip Length: .260"
• Underhead Angle/Radius: Pro Flo 12° x 3/8"
• Margin: .055"
• Seat: .100" x 45°
• Dish: 7°
• Keeper Groove: Chevy LS .060" radius
• Material: NK-842 stainless steel with chrome stems and hardened tips
• Finish: Swirl polished under-head area with fully machined combustion face

Manley Race Flo valves deliver the Pro Flo underhead contour design for optimized airflow and combustion efficiency. The chrome stems provide enhanced wear resistance, while the hardened tips stand up to aggressive valvetrain operation.

Installation Note: Use Manley valve locks P/N 13098-16 (7°) or 13153-16 (10°) depending on your spring and retainer selection. Manley strongly recommends that all valve guides be checked and correctly sized prior to installation to achieve proper stem-to-guide clearance.