S&S CYCLE - 33-5108 - Camshaft - 640 Series - Evolution Big Twin '84-'99
The S&S CYCLE 33-5108 is a purpose-built camshaft designed and tested to perform correctly in the conditions and applications it was made for. 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, giving you a level of quality that holds up across the full service life of the component. Lower TDC lift makes installation easier. Designed for use with hydraulic tappets. Installer must check coil bind, valve-to-valve clearance, valve-to-piston clearance and cam lobe to case clearance.. The 33-5108 delivers exactly what riders need from a quality aftermarket component. Sold individually.
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
- Application: Intake
- Intake Close: 60°
- Intake Lift: 0.640”
- Units: Each
- Exhaust Duration: 265°
- Exhaust Lift at TDC: 0.192”
- Intake Lift at TDC: 0.222”
- Type: Gear
- Application: Exhaust
- Product Name: Camshaft
- Intake Lobe Centerline: 107.5°
- Intake Open: 25°
- Exhaust Lift: 0.640”
- Exhaust Lobe Centerline: 112.5”
- Exhaust Open: 65°
- Exhaust Close: 20°
- Grind: 640 Series
- Intake Duration: 265°
- Riding Style: Street
Frequently Asked Questions - S&S CYCLE - 33-5108 - Camshaft - 640 Series - Evolution Big Twin '84-'99
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
