S&S Cycle Gear Drive Cam Chest Kit for M8 Engines

Elevate the performance of your Harley-Davidson Milwaukee-Eight engine with the S&S Cycle Gear Drive Cam Chest Kit. This comprehensive upgrade is engineered to deliver superior cam timing accuracy and eliminate the complexities of the stock cam chain tensioner, ensuring a more reliable and powerful ride for your M8.

Description

Designed for the discerning rider, the S&S Cycle Gear Drive Cam Chest Kit is a premium Harley-Davidson M8 cam upgrade that transforms your engine's valvetrain. At its core, this kit features an advanced gear drive cam system M8, replacing the factory chain tensioner for unmatched precision and durability. The included M8 oil pump and cam plate are meticulously precision-machined from robust billet aluminum, then finished with a striking blue anodized coating, ensuring both high performance and visual appeal. This sophisticated design boasts independent scavenge sections for the flywheel cavity and cam chest, significantly boosting oil flow capacity on both the feed and scavenge sides. Debris screens in both scavenge pickups, along with a strategically placed magnet in the cam chest, provide critical protection against contaminants entering the oil pump, extending engine life. An adjustable pressure relief valve allows for fine-tuning even after installation. The kit also includes S&S Quickee Pushrods with finished pushrod tubes and S&S premium tappets, complemented by billet aluminum tappet cuffs. These hard-anodized black cuffs are stronger than stock, preventing distortion and dramatically improving tappet stability, especially in high-lift 0.485" and high-RPM situations. With an intake duration of 227° and exhaust duration of 243°, this kit is built for serious power. Made in the USA, this kit is compatible with M8 models equipped with VVT, ensuring a perfect fit and seamless integration.

Features & Highlights

• Unrivaled Cam Timing Accuracy: Experience superior engine precision with the gear drive system, eliminating the stock cam chain tensioner for consistent, reliable performance on your Harley-Davidson M8.
• Enhanced Oil System Performance: Precision-machined billet aluminum oil pump and cam plate with independent scavenge sections and increased flow capacity ensure optimal lubrication and cooling.
• Advanced Debris Protection: Integrated debris screens in scavenge pickups and a powerful magnet in the cam chest actively prevent contaminants from reaching the oil pump, safeguarding your engine.
• Superior Valvetrain Stability: Includes S&S Quickee Pushrods, premium S&S tappets, and robust billet aluminum tappet cuffs that prevent distortion and enhance stability in high-lift and high-RPM conditions.
• Adjustable Pressure Relief Valve: Fine-tune your engine's oil pressure with an easily accessible adjustable valve, even after the unit is fully installed.
• Premium Billet Construction: Oil pump and cam plate are crafted from billet aluminum with a blue anodized finish, while tappet cuffs are hard-anodized black, ensuring exceptional strength and durability.
• Proudly Made in the USA: Manufactured with precision and quality craftsmanship in the United States, guaranteeing a product built to the highest standards.

Technical Specifications

• Type: Gear Drive
• Grind: 496 Series
• Application: Water Cooled M8
• Intake Lift: 0.485"
• Intake Open: 7°
• Intake Close: 40°
• Intake Duration: 227°
• Intake Lift at TDC: 0.072"
• Exhaust Lift: 0.485"
• Exhaust Open: 48°
• Exhaust Close: 15°
• Exhaust Duration: 243°
• Exhaust Lift at TDC: 0.097"
• Pushrod Tubes: Black Finish
• Vendor Part Number: 310-1387A