Camshaft - 640 Series - Evolution Big Twin '84-'99
Features
- For large displacement engines 110" and larger with 10.5:1 to 11.5:1 compression and smaller engines, 96"-107" with 11.0:1 to 12.0:1 compression
- Less overlap and fast ramps build higher cylinder pressure
- Lower TDC lift makes installation easier
- Designed for use with hydraulic tappets
- Made in the USA
- Installer must check coil bind, valve-to-valve clearance, valve-to-piston clearance and cam lobe to case clearance.
- Requires high-lift springs.
Specs
| Exhaust Lift at TDC | 0.192" |
| Intake Lift at TDC | 0.222" |
| Type | Gear |
| Application | Intake |
| Product Name | Camshaft |
| Exhaust Lift | 0.640" |
| Exhaust Lobe Centerline | 112.5" |
| Exhaust Open | 65° |
| Intake Lobe Centerline | 107.5° |
| Intake Open | 25° |
| Intake Close | 60° |
| Intake Lift | 0.640" |
| Units | Each |
| Exhaust Duration | 265° |
| Exhaust Close | 20° |
| Grind | 640 Series |
| Intake Duration | 265° |
| Riding Style | Street |
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