Perfect for stock or High Energy camshaft engines, our High Energy rockers eliminate slop and feature a long slot for higher lift cams. These 1218 nitrided rockers feature a 1.7 ratio for 7/16" stud '65-'87 Chevrolet 396-454 Big Block.
These nitrided COMP Cams High Energyâ„¢ Steel Stud Mount Rocker Arms designed for 1965-87 Chevy 396-454 Applications feature a 7/16" Stud diameter and 1.7 ratio. High Energyâ„¢ Rockers help eliminate the noise and slop associated with older worn and high mileage stock Rocker arms. With a long slot for higher than stock lift Camshafts, these Rocker arms are an excellent replacement choice for engine rebuilds using either stock or High Energy Camshaftsâ„¢. These Rockers have been nitrided to increase surface hardness for improved initial and long-term wear characteristics. The nitriding process increases hardness by causing an infusion of nitrogen molecules into the material's surface. This improves both the lubricity and wear resistance of the material.
- Excellent replacement Rocker arms for engine rebuilds with a stock or High Energy Camshaftâ„¢
- Help to eliminate noise and slop associated with worn or high mileage stock Rocker arms
- Include adjusting nuts and pivot balls where required
- Feature a long slot for higher than stock lift Camshafts
- Nitrided Rocker arms designed for higher spring pressures and hardened Pushrods
Application Summary:
| Year |
Make/Model |
| 1990-1993 |
Chevrolet C1500 |
| 1991-1995 |
Chevrolet C2500 |
| 1992-1995 |
Chevrolet C2500 Suburban |
| 1988-1995 |
Chevrolet C3500 |
| 1988-1996 |
Chevrolet G30 |
| 1991-1995 |
Chevrolet K2500 |
| 1992-1995 |
Chevrolet K2500 Suburban |
| 1988-1995 |
Chevrolet K3500 |
| 1987-1988 |
Chevrolet R20 |
| 1987-1988 |
Chevrolet R20 Suburban |
| 1989 |
Chevrolet R2500 |
| 1989-1991 |
Chevrolet R2500 Suburban |
| 1987-1988 |
Chevrolet R30 |
| 1989-1991 |
Chevrolet R3500 |
| 1987-1988 |
Chevrolet V20 Suburban |
| 1990 |
Chevrolet V2500 Suburban |
| 1987-1988 |
Chevrolet V30 |
| 1989-1990 |
Chevrolet V3500 |
| Attributes |
| Amazon ASIN |
N/A |
| ASIN |
B005H89RBI |
| 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 |
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 |
| NAFTA Preference Criterion Code |
B |
| Ratio |
1.7 |
| Rocker Arm Material |
Steel, Steel |
| Rocker Arm Ratio |
1.7, 1.7 |
| Rocker Arm Series |
High Energy, High Energy |
| Rocker Stud Diameter |
7/16, 7/16 |
| SDR Required Flag |
N |
| SDS Sheet Number |
N/A |
| Stud Size |
7/16 |
| Warranty Time |
12 |
| GTIN |
00036584206545 |
