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 1.7 ratio, this rocker fits Chevrolet 396-454 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.
- Chevy V8 396-454 c.i.d. - 7/16" Stud - 1.7 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 |
|---|---|
| 1963 | Chevrolet Bel Air |
| 1965-1975 | Chevrolet Bel Air |
| 1963 | Chevrolet Biscayne |
| 1965-1972 | Chevrolet Biscayne |
| 1973 | Chevrolet Blazer |
| 1972 | Chevrolet Brookwood |
| 1975-1980 | Chevrolet C10 |
| 1968-1974 | Chevrolet C10 Pickup |
| 1968-1980 | Chevrolet C10 Suburban |
| 1975-1986 | Chevrolet C20 |
| 1968-1974 | Chevrolet C20 Pickup |
| 1968-1986 | Chevrolet C20 Suburban |
| 1975-1986 | Chevrolet C30 |
| 1968-1974 | Chevrolet C30 Pickup |
| 1967-1972 | Chevrolet Camaro |
| 1966-1976 | Chevrolet Caprice |
| 1965-1973 | Chevrolet Chevelle |
| 1968 | Chevrolet Chevy II |
| 1966-1974 | Chevrolet Corvette |
| 1966-1975 | Chevrolet El Camino |
| 1973-1974 | Chevrolet G10 Van |
| 1976 | Chevrolet G20 |
| 1973-1974 | Chevrolet G20 Van |
| 1975-1976 | Chevrolet G30 |
| 1973-1974 | Chevrolet G30 Van |
| 1963 | Chevrolet Impala |
| 1965-1976 | Chevrolet Impala |
| 1976 | Chevrolet K10 |
| 1979-1980 | Chevrolet K10 |
| 1968-1969 | Chevrolet K10 Pickup |
| 1974 | Chevrolet K10 Pickup |
| 1968-1972 | Chevrolet K10 Suburban |
| 1976-1978 | Chevrolet K20 |
| 1980 | Chevrolet K20 |
| 1968-1969 | Chevrolet K20 Pickup |
| 1973-1974 | Chevrolet K20 Pickup |
| 1973 | Chevrolet K20 Suburban |
| 1985 | Chevrolet K20 Suburban |
| 1977 | Chevrolet K30 |
| 1980-1986 | Chevrolet K30 |
| 1968-1971 | Chevrolet K30 Pickup |
| 1973-1974 | Chevrolet K30 Pickup |
| 1976-1978 | Chevrolet K5 Blazer |
| 1970-1972 | Chevrolet Kingswood |
| 1973-1975 | Chevrolet Laguna |
| 1966-1967 | Chevrolet Malibu |
| 1973-1975 | Chevrolet Malibu |
| 1970-1975 | Chevrolet Monte Carlo |
| 1969-1970 | Chevrolet Nova |
| 1987-1988 | Chevrolet R30 |
| 1989 | Chevrolet R3500 |
| 1970 | Chevrolet Townsman |
| 1972 | Chevrolet Townsman |
| 1987-1988 | Chevrolet V30 |
| 1989 | Chevrolet V3500 |
| 1975-1978 | GMC C15 |
| 1975-1978 | GMC C15 Suburban |
| 1968-1974 | GMC C15/C1500 Pickup |
| 1968-1974 | GMC C15/C1500 Suburban |
| 1979-1980 | GMC C1500 |
| 1979-1980 | GMC C1500 Suburban |
| 1975-1978 | GMC C25 |
| 1975-1978 | GMC C25 Suburban |
| 1968-1974 | GMC C25/C2500 Pickup |
| 1968-1972 | GMC C25/C2500 Suburban |
| 1974 | GMC C25/C2500 Suburban |
| 1979-1986 | GMC C2500 |
| 1979-1986 | GMC C2500 Suburban |
| 1975-1978 | GMC C35 |
| 1968-1974 | GMC C35/C3500 Pickup |
| 1979-1986 | GMC C3500 |
| 1975-1976 | GMC G25 |
| 1976 | GMC G35 |
| 1973 | GMC Jimmy |
| Attributes | |
| Amazon ASIN | B0046ZG9FU, B0046ZG9FU |
| ASIN | B0046ZG9FU |
| 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 | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996), Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Engine Make/Size | Chevy Big Block (396-454) |
| 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 | 1.7 |
| Rocker Arm Material | 8650 Chromemoly Steel, 8650 Chromemoly Steel, 8650 Chromemoly Steel |
| Rocker Arm Ratio | 1.7, 1.7, 1.7 |
| 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 | 00036584196020 |