This 1.5 ratio Ultra Pro Magnum rocker arm replaces the rocker arms that come with our 1622-16 Ultra Pro Magnum Shaft-Mount Rocker system for Chrysler 273-360.
Ultra Pro Magnum Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums. 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.Chrysler 273-360 LA Small Block - Shaft Mounted - 1.5 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. Requires ball/ball style pushrods.
Ultra Pro Magnum Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums. 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.Chrysler 273-360 LA Small Block - Shaft Mounted - 1.5 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. Requires ball/ball style pushrods.
Application Summary:
| Year | Make/Model |
|---|---|
| 1975-1980 | Chrysler Cordoba |
| 1984-1989 | Chrysler Fifth Avenue |
| 1981-1983 | Chrysler Imperial |
| 1977-1979 | Chrysler LeBaron |
| 1977-1981 | Chrysler New Yorker |
| 1971-1972 | Chrysler Newport |
| 1974-1980 | Chrysler Newport |
| 1978-1979 | Chrysler Town & Country |
| 1964 | Dodge 330 |
| 1976-1980 | Dodge Aspen |
| 1970-1974 | Dodge Challenger |
| 1967-1978 | Dodge Charger |
| 1956 | Dodge Coronet |
| 1965-1976 | Dodge Coronet |
| 1956 | Dodge Custom |
| 1960-1962 | Dodge Dart |
| 1964-1976 | Dodge Dart |
| 1977-1979 | Dodge Diplomat |
| 1983-1989 | Dodge Diplomat |
| 1978-1979 | Dodge Magnum |
| 1980 | Dodge Mirada |
| 1968-1978 | Dodge Monaco |
| 1966 | Dodge Polara |
| 1968-1973 | Dodge Polara |
| 1956 | Dodge Royal |
| 1975-1977 | Dodge Royal Monaco |
| 1979-1980 | Dodge St. Regis |
| 1964-1969 | Plymouth Barracuda |
| 1971-1974 | Plymouth Barracuda |
| 1956-1959 | Plymouth Belvedere |
| 1964-1970 | Plymouth Belvedere |
| 1965-1967 | Plymouth Belvedere II |
| 1970-1974 | Plymouth Cuda |
| 1970-1976 | Plymouth Duster |
| 1956-1959 | Plymouth Fury |
| 1964-1978 | Plymouth Fury |
| 1968-1974 | Plymouth Fury I |
| 1965-1974 | Plymouth Fury II |
| 1965-1974 | Plymouth Fury III |
| 1972-1977 | Plymouth Gran Fury |
| 1980 | Plymouth Gran Fury |
| 1984-1989 | Plymouth Gran Fury |
| 1968 | Plymouth GTX |
| 1956-1958 | Plymouth Plaza |
| 1968 | Plymouth Road Runner |
| 1971-1975 | Plymouth Road Runner |
| 1965-1974 | Plymouth Satellite |
| 1956-1961 | Plymouth Savoy |
| 1964 | Plymouth Savoy |
| 1971-1974 | Plymouth Scamp |
| 1956-1961 | Plymouth Suburban |
| 1964-1974 | Plymouth Valiant |
| 1976 | Plymouth Valiant |
| 1976-1979 | Plymouth Volare |
| Attributes | |
| Amazon ASIN | B0046ZLEAA, B0046ZLEAA |
| ASIN | B0046ZLEAA |
| 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 | Chrysler V8 273-360, Chrysler V8 273-360 |
| Engine Make/Size | Mopar 273-360 |
| 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 | 1.5 |
| Rocker Arm Material | 8650 Chromemoly Steel, 8650 Chromemoly Steel, 8650 Chromemoly Steel |
| Rocker Arm Ratio | 1.5, 1.5, 1.5 |
| Rocker Arm Series | Ultra Pro Magnum, Ultra Pro Magnum, Ultra Pro Magnum |
| Rocker Stud Diameter | Shaft, Shaft, Shaft |
| SDR Required Flag | N |
| SDS Sheet Number | N/A |
| Stud Size | Shaft |
| GTIN | 00036584222651 |