The Enginetech ES804R is a stage 4 performance camshaft for GM Small Block Chevy engines (1957-2002) applications.
Important Notes
- Required follower/lifter type: Mechanical Flat
- No specific vehicle fitment - verify bore size, journal dimensions, and timing gear compatibility with your engine before ordering.
- Always replace all lifters when installing a new camshaft.
- A new timing set is strongly recommended.
Camshaft Specifications
| Part Number | ES804R |
| Performance Grade | Stage 4 |
| Engine Family | GM Small Block Chevy |
| Application Year Range | 1957-2002 |
| Required Follower/Lifter | Mechanical Flat |
| Duration @ .050" Intake | 254 degrees |
| Duration @ .050" Exhaust | 254 degrees |
| Valve Lift Intake | .485" |
| Valve Lift Exhaust | .485" |
| Cam/Lobe Lift | .323" |
| Lobe Separation | 110 degrees |
Engine Applications
- 4.3L / 262 OHV V8 16V Chev. Small Block 3.671" Bore 75-76
- 4.4L / 267 OHV V8 16V Chev. Small Block 3.500" Bore 79-82
- 4.6L / 283 OHV V8 16V Chev. Small Block 3.875" Bore 57-67
- 4.9L / 302 OHV V8 16V Chev. Small Block 4.000" Bore 67-69
- 5.0L / 307 OHV V8 16V Chev. Small Block 3.875" Bore 68-73
- 5.0L / 305 OHV V8 16V Chev. Small Block 3.736" Bore 76-02
- 5.3L / 327 OHV V8 16V Chev. Small Block 4.000" Bore 62-69
- 5.7L / 350 OHV V8 16V Chev. Gen I Small Block 4.000" Bore 67-02
- 6.3L / 383 OHV V8 16V Chev. Small Block Stroker 4.000" Bore 67-02
- 6.6L / 400 OHV V8 16V Chev. Small Block 4.125" Bore 70-80
Enginetech high-performance camshafts are ground to precision specifications using computer-aided design to maximize power output while maintaining street drivability. These performance grinds are designed as direct drop-in replacements requiring no engine modifications. Always install a new timing set and replace all lifters when installing a new camshaft - reusing worn lifters causes rapid lobe wear and premature failure. Use the specified follower type as indicated in the application notes. Verify bore size and journal dimensions match your engine block before ordering.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm.
