S&S 310-1397 129" Big Bore Power Pack HPT496 gear cam black Oil cooled M8

129" Power Pack with Black Pushrod Tubes HPT496 496 Gear Drive Cam, Black Finish without Highlight Fins, For Oil Cooled 2017-up M8 Models

The S&S Power Package is the ideal combination of performance and savings designed to transform your engine without breaking the bank. The latest kits combine our biggest big bore cylinders (4.32") with matched cam/cam plate/oil pump and everything else a high performance cam chest needs to make big, reliable horsepower. Transform your 107" to 129" and your 114/117" to a 132" monster.

107" to 129" Big Bore Kit:

• Available With or Without Fin Highlighting
• Bolt-On Kit — No Case Machining Required
• 4.320" Bore
• Forged Pistons
• 11.1 Compression Ratio

Oil Pump/Cam Plate:

• Precision Machined from Billet Aluminum
• Independent Scavenge Sections for Flywheel Cavity & Cam Chest
• Debris Screens in Both Scavenge Pickups
• Magnet in Cam Chest to Help to Stop Debris from Entering Oil Pump
• 44% Flow Increase on Supply Side & 58% Flow Increase on Scavenge Side
• Pressure Relief Valve is Adjustable with Unit Installed in Engine
• Kits Now Include Updated Oil Pump with Groove for Optional OEM Oil Seal

Pushrods:

• Quickee Pushrods
• Chrome or Black Pushrod Tubes Available

Tappets:

• Hand Assembled to Exacting Tolerances
• Reduced Valve Train Noise from Start Up to Shut Down
• Close Tolerances for Low Leak Down Rates
• Fast Pump Up and Superior High RPM Performance

Tappet Cuffs:

• Hard Anodized Black Coating
• Billet Aluminum Construction
• Improve Tappet Stability in High Lift & High RPM Situations

Cam:

• S&S HPT496 Cam- Designed for Big Bore Applications
• Available in Both Gear Drive & Chain Drive Variations
• Gear Drive Kits Provide Improved Cam Timing Accuracy
• Gear Drive Kits Include Outer Drive Gears

Valve Springs:

• High Performance Conical Single Wire Spring
• Includes Top Collars, Keepers, & Valve Seals/Bottom Collars

Cam Chain Tensioner:

• Comes with Chain Drive Kits
• Precision Machined from Billet Aluminum
• Thicker Shoe for Longer Wear
• Direct Chain Oiling
• Larger Piston for More Consistent Pressure
• Tighter Tolerances Improves Stability

Get ready to unleash serious power with the largest bolt-in cam we've ever produced for M8 models--the S&S Cycle HPT496. Designed to deliver big Horsepower and Torque gains, this cam works seamlessly with your stock or S&S rocker arms and springs—no head work required. Each kit includes all the necessary hardware for a straightforward install, and like everything we do, it’s proudly made in the USA. If you're looking to really wake-up your M8, this cam is your new best friend. Bolt in huge gains in Horsepower and Torque! The S&S Cycle HPT496 is the biggest bolt-in cam we have done for M8 Models Works with stock or S&S rocker arms and springs Increased HorsePower and Torque Kits include all required hardware Made in the USA Compatible with the stock valve springs, both first generation (round port) and second generation (oval port). Works with the stock and S&S roller rocker arms.