Description
S&S Cycle 310-1223 129″ Chain Drive Power Pack for 107″ Oil-Cooled 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 a 129″ monster.
Big Bore Kit:
- 107″ to 129″ Big Bore Kit that works with stock Stroke Flywheel
- Performance matched 550 cam
- Works with stock crankcases
- Original engine serial numbers are retained
- Powder coat finish match factory finish
- MLS (multi-layered steel) head gaskets
- Retains stock engine height
- Includes Cam Cover Badge
Oil Pump/Cam Plate:
- Precision Machined from Billet Aluminum
- Blue Anodized Finish
- Passage Plugs Removeable for servicing
- Independent Scavenge Sections for Flywheel Cavity and Cam Chest
- Debris Screens in both scavenge pickups
- Magnet in Cam Chest to help to stop debris from entering oil pump
- Increased Flow Capacity on both Feed and Scavenge side
- Adjustable Pressure Relief Valve is adjustable with unit installed in engine
- Chain drive kits include S&S High Performance cam chain tensioner (330-0737)
Pushrods:
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Quickee Pushrods
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Chrome pushrod tubes
Tappets:
- S&S Precision Tappets
Tappet Cuffs:
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Hard Anodized Black Coating
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Billet Aluminum Construction
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Stronger than Stock Material eliminates Distortion
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Improve tappet stability in high lift and high rpm situations
Cam:
- 550 Cam- Designed for Big Bore Applications
- Chain Drive
- MADE IN USA
Valve Springs:
- Work well with cams up to .605 lift
- High Performance Conical Single Wire Spring
- Includes all gaskets, bearings, and hardware required for installation
- MADE IN USA
Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.
Important Information (MUST READ):
This installation should be done by an experienced mechanic who has access to a factory service manual and all required tools. Measure flywheel pinion shaft run out & end play. Excessive pinion shaft runout and or end play will cause damage and or failure and voids manufacturer’s warranty.
The recommended ideal end play at 0.003”-0.004”, crankshaft runout at or below 0.003″, measure crank bearing play by lifting up on the tip of the pinion shaft. If your runout is more than the recommended, DO NOT INSTALL the camplate and oil pump.
Important Information (MUST READ):
*A ThunderMax Autotune System is highly recommended for this product if you do not already have an aftermarket tuner. If you have one already, we can also provide you a recommended base map if you purchase this kit.*
