These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, these self-aligning rockers fit Ford V8's with a 3/8" 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.
- Ford V8 Engines with Self Aligning Rockers - 3/8" 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 |
| 1978-1979 |
Ford Bronco |
| 1969-1974 |
Ford Country Sedan |
| 1969-1974 |
Ford Country Squire |
| 1969-1972 |
Ford Custom |
| 1969-1977 |
Ford Custom 500 |
| 1975-1976 |
Ford Elite |
| 1977-1979 |
Ford F-100 |
| 1975-1979 |
Ford F-150 |
| 1975-1994 |
Ford F-250 |
| 1975-1994 |
Ford F-350 |
| 1970 |
Ford Fairlane |
| 1969-1974 |
Ford Galaxie 500 |
| 1972-1976 |
Ford Gran Torino |
| 1969-1978 |
Ford LTD |
| 1977-1978 |
Ford LTD II |
| 1969-1971 |
Ford Mustang |
| 1969-1974 |
Ford Ranch Wagon |
| 1970-1978 |
Ford Ranchero |
| 1968-1978 |
Ford Thunderbird |
| 1970-1976 |
Ford Torino |
| 1968-1979 |
Lincoln Continental |
| 1968-1971 |
Lincoln Mark III |
| 1972-1976 |
Lincoln Mark IV |
| 1977-1979 |
Lincoln Mark V |
| 1969-1974 |
Mercury Colony Park |
| 1970-1978 |
Mercury Cougar |
| 1970-1971 |
Mercury Cyclone |
| 1975-1978 |
Mercury Grand Marquis |
| 1969-1970 |
Mercury Marauder |
| 1969-1978 |
Mercury Marquis |
| 1970-1976 |
Mercury Montego |
| 1969-1973 |
Mercury Monterey |
| Attributes |
| Amazon ASIN |
N/A |
| ASIN |
B005H89S0I |
| C.A.R.B. E.O. Number |
N/A |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles? |
No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? |
Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason |
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 V8 w/ Self-Aligning Rockers, Ford V8 w/ Self-Aligning Rockers |
| 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 |
| Ratio |
1.6 |
| Rocker Arm Material |
8650 Chromemoly Steel, 8650 Chromemoly Steel |
| Rocker Arm Ratio |
1.6, 1.6 |
| Rocker Arm Series |
Ultra Pro Magnum, Ultra Pro Magnum |
| Rocker Stud Diameter |
3/8, 3/8 |
| SDR Required Flag |
N |
| SDS Sheet Number |
N/A |
| Stud Size |
3/8 |
| GTIN |
00036584196518 |
