Manley Performance 1.550" Head Diameter Street Flo Exhaust Valves for use with Rail Type Rockers | Multiple Fitments (10775-8)

Ford 289 - 302 - 351W Street Flo Exhaust Valves - Set of 8 by Manley Performance

Designed for the enthusiast preparing a stock or mildly modified street engine, or a bracket racer seeking maximum value for his dollar, the Performance or Street Series valves are the perfect choice. These dependable valves are also offered in Street Flo versions providing significant flow gains without head porting. All valves in both these series feature chrome stems, hard tips, swirl polished underhead areas, and fully machined combustion faces.

Features

• Head Diameter: 1.550"
• Stem Diameter: .3415”
• Installed Height: Stock
• O/A Length: 5.080"
• Tip Length: .395"
• Underhead Angle/Radius: Pro Flo 12° x 3/8”
• Margin: .060”
• Seat Width: .100"
• Top Of Head: 7° Dish
• Chrome Stems and Hard Tips
• Swirl Polished and Fully Machined
• XH-424 Stainless Exhaust Material

Benefits

• Designed for the enthusiast preparing a stock or mildly modified street engine
• Significant flow gains without head porting
• Up to 40% flow increase in small port OE style cylinder heads
• Proven performance improvement on the flow bench

Please Note: FOR USE WITH RAIL TYPE ROCKERS

Applications

• 1968–1974 Ford Galaxie
• 1968–1970 Ford Mustang
• 1969–1971 Mercury Cougar
• 1969–1991 Ford Country Squire
• 1969-1970 Ford Fairlane (Americas)
• 1970–1976 Ford Torino
• 1974–1976 Ford Elite
• 1975–1996 Ford E series
• 1977–1979 Ford LTD II
• 1977–1979 Ford Thunderbird
• 1979–1996 Ford Bronco
• 1979–1982 Ford LTD (Americas)
• 1987–1997 Ford F-Series
• 1977–1979 Mercury Cougar (station wagons only)
• 1978, 1986–1991 Mercury Colony Park
• 1978–1982 Mercury Marquis
• 1986–1991 Mercury Grand Marquis
• 1980 Continental Mark VI
• 1995 Ford Mustang SVT Cobra R

What's In The Box?

• 8 - Valves

Warranty

• Manley products, due to their intended use, are sold without warranty.