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 self-aligning rocker fits 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.
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.
| Attributes | |
| Amazon ASIN | B0046ZEDDK, B0046ZEDDK |
| ASIN | B0046ZEDDK |
| 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 V8 w/ Self-Aligning Rockers, Ford V8 w/ Self-Aligning Rockers |
| Engine Make/Size | Ford 351C-400, Ford 352-428, Ford 390-428, Ford 429-460 |
| 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 | 3/8, 3/8, 3/8 |
| SDR Required Flag | N |
| SDS Sheet Number | N/A |
| Stud Size | 0.3750 |
| GTIN | 00036584196501 |