This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, this rocker fits Ford 289-351W with a 7/16" diameter stud.
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.
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.
Application Summary:
| Year | Make/Model |
|---|---|
| 1966-1977 | Ford Bronco |
| 1980-1995 | Ford Bronco |
| 1963-1969 | Ford Country Sedan |
| 1971-1972 | Ford Country Sedan |
| 1963-1972 | Ford Country Squire |
| 1965-1967 | Ford Custom |
| 1964-1972 | 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 |
| 1977-1978 | Ford F-250 |
| 1980-1995 | Ford F-250 |
| 1975-1995 | 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 |
| 1963-1972 | Ford Galaxie 500 |
| 1972-1976 | Ford Gran Torino |
| 1975-1980 | Ford Granada |
| 1965-1972 | 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 |
| 1963-1972 | 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 |
| 1964-1969 | Mercury Comet |
| 1971-1977 | Mercury Comet |
| 1967 | Mercury Commuter |
| 1967-1969 | Mercury Cougar |
| 1975-1981 | Mercury Cougar |
| 1964-1970 | Mercury Cyclone |
| 1978-1981 | Mercury Grand Marquis |
| 1986 | Mercury Grand Marquis |
| 1978-1981 | Mercury Marquis |
| 1975-1980 | Mercury Monarch |
| 1968-1976 | Mercury Montego |
| 1964-1967 | Mercury Villager |
| 1966-1967 | Mercury Voyager |
| 1978 | Mercury Zephyr |
| Attributes | |
| Amazon ASIN | B0046ZHNAA, B0046ZHNAA |
| ASIN | B0046ZHNAA |
| C.A.R.B. E.O. Number | N/A, N/A |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle., Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles? | No, No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle., Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason | N/A, N/A |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Country of Origin (Primary) | US |
| Emission Code | Legal US |
| Engine Family | Ford 289-351W, Ford 289-351W |
| Engine Make/Size | Ford 289-351W |
| Harmonized Tariff Code (Schedule B) | 8409914000 |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Maximum Valve Spring Open Pressure | 850, 850 |
| NAFTA Preference Criterion Code | B |
| Position | N/A |
| Ratio | 1.6 |
| Rocker Arm Material | 8650 Chromemoly Steel, 8650 Chromemoly Steel, 8650 Chromemoly Steel |
| Rocker Arm Ratio | 1.6, 1.6, 1.6 |
| Rocker Arm Series | Ultra Pro Magnum, Ultra Pro Magnum, Ultra Pro Magnum |
| Rocker Stud Diameter | 7/16, 7/16, 7/16 |
| SDR Required Flag | N |
| SDS Sheet Number | N/A |
| Stud Size | 0.4375 |
| GTIN | 00036584196143 |