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S&S CYCLE Power Package for M8 Models with 496 Gear Drive - Oil Cooled, Black Granite Finish - Part #310-1391A
Regular price $3,497.95 USD
Power Package - Oil Cooled - 496 Gear Drive - Black Granite w/Highlight - M8 Enhance your Harley-Davidson M8 engine with the...
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Power Package - Oil Cooled - 496 Gear Drive - Black Granite w/Highlight - M8
Enhance your Harley-Davidson M8 engine with the S&S CYCLE Power Package, part number 310-1391A. This comprehensive upgrade kit is specifically designed to fit M8 models, including VVT variants, offering increased performance and reliable operation. The kit features a Big Bore bolt-on kit that elevates engine displacement from 114 or 117 inches with a 4.50-inch stroke to an impressive 132 inches without requiring case modifications. This upgrade is ideal for riders seeking significant power gains while maintaining the integrity of their stock engine components.
Constructed with high-quality materials, the S&S Power Package includes an S&S oil pump and cam plate for optimal lubrication and camshaft operation. The package also features removable passage plugs for easy servicing, independent scavenge sections for the flywheel cavity and cam chest, and debris screens in both scavenge pickups to prevent contaminants from entering the oil system. A magnet in the cam chest further helps reduce debris entering the oil pump, ensuring smooth engine performance. The oil flow capacity is increased on both feed and scavenge sides, providing improved lubrication during demanding riding conditions.
In addition to the internal enhancements, this package includes adjustable pressure relief valves that can be fine-tuned with the unit installed, ensuring optimal oil pressure settings. The Quickee pushrods, combined with durable pushrod tubes, facilitate precise valve operation, while S&S premium tappets and hard anodized, black-coated tappet cuffs made from billet aluminum add durability and longevity. The included S&S valve springs are compatible with cams up to 0.605 inches of lift and feature a high-performance conical single wire design for reliable valve operation at high RPMs. The camshaft, designed specifically for big bore applications, is a 496 cam that delivers increased power and torque.
The package also includes a multi-layered steel (MLS) head gasket to ensure a proper seal and maintain compression ratios. Built in the USA, this kit retains the stock engine height and is compatible with stock crankcases, as well as original and S&S roller rocker arms. It works seamlessly with both first-generation (round port) and second-generation (oval port) stock valve springs, ensuring broad compatibility. Whether you're aiming for higher horsepower or improved engine reliability, this Power Package provides a robust upgrade for your M8 engine, combining performance enhancements with ease of installation and long-term durability.
Features:
- Updated profile to fit M8 models including VVT variants
- Big bore bolt-on kit increases engine displacement from 114/117 inches to 132 inches with no case machining required
- Includes S&S oil pump and cam plate for optimal lubrication
- Removable passage plugs facilitate servicing
- Independent scavenge sections for flywheel cavity and cam chest
- Debris screens in both scavenge pickups prevent contaminants from entering the oil system
- Magnet in cam chest reduces debris entering the oil pump
- Enhanced oil flow capacity on feed and scavenge sides
- Adjustable pressure relief valve for fine-tuning oil pressure
- Quickee pushrods and tubes for precise valve operation
- S&S premium tappets and black coated, billet aluminum cuff tappets for durability
- S&S valve springs support cams up to 0.605" lift with high-performance conical design
- 496 cam designed for big bore applications increases power output
- MLS head gasket ensures proper sealing and compression
- Retains stock engine height and works with stock crankcases
- Compatible with original and S&S roller rocker arms and stock valve springs
