7/16" Stud, 1.6 Ratio. For use in: AMC V8 290-401 / Ford V8 289-302-351 Windsor

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Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.

• Ford V8 289-302-351W - 7/16" Stud - 1.6 Ratio
• Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
• Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.
• Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
• Lifetime Warranty - So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.

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Application Summary:

Year	Make/Model
1966-1977	Ford Bronco
1980-1995	Ford Bronco
1963-1974	Ford Country Sedan
1963-1974	Ford Country Squire
1965-1972	Ford Custom
1964-1974	Ford Custom 500
1976-1977	Ford Custom 500
1969-1983	Ford E-100 Econoline
1975-1983	Ford E-100 Econoline Club Wagon
1975-1995	Ford E-150 Econoline
1975-1995	Ford E-150 Econoline Club Wagon
1969-1974	Ford E-200 Econoline
1975-1995	Ford E-250 Econoline
1975-1991	Ford E-250 Econoline Club Wagon
1969-1974	Ford E-300 Econoline
1975-1995	Ford E-350 Econoline
1977-1995	Ford E-350 Econoline Club Wagon
1975-1976	Ford Elite
1975-1983	Ford F-100
1975-1995	Ford F-150
1976-1978	Ford F-250
1980-1995	Ford F-250
1975-1978	Ford F-350
1980-1995	Ford F-350
1963-1970	Ford Fairlane
1978-1979	Ford Fairmont
1964-1970	Ford Falcon
1965	Ford Falcon Sedan Delivery
1963	Ford Ford 300
1963-1967	Ford Galaxie
1963-1974	Ford Galaxie 500
1972-1976	Ford Gran Torino
1975-1980	Ford Granada
1965-1974	Ford LTD
1976-1986	Ford LTD
1988-1991	Ford LTD Crown Victoria
1977-1979	Ford LTD II
1971-1977	Ford Maverick
1964-1973	Ford Mustang
1979	Ford Mustang
1995	Ford Mustang
1975-1978	Ford Mustang II
1963-1974	Ford Ranch Wagon
1965-1979	Ford Ranchero
1977-1981	Ford Thunderbird
1968-1976	Ford Torino
1980	Lincoln Continental
1980	Lincoln Mark VI
1977-1980	Lincoln Versailles
1964-1967	Mercury Caliente
1979	Mercury Capri
1971	Mercury Colony Park
1964-1969	Mercury Comet
1971-1977	Mercury Comet
1967	Mercury Commuter
1967-1970	Mercury Cougar
1974-1981	Mercury Cougar
1964-1970	Mercury Cyclone
1978-1981	Mercury Grand Marquis
1986	Mercury Grand Marquis
1971	Mercury Marquis
1978-1981	Mercury Marquis
1975-1980	Mercury Monarch
1968-1976	Mercury Montego
1971	Mercury Monterey
1964-1967	Mercury Villager
1966-1967	Mercury Voyager
1978	Mercury Zephyr