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The 128" Power Package is the ideal combination of performance and savings to transform your Milwaukee Eight HD without breaking the bank. Bumps that engine from 114ci to 128ci as well as adding matched cams/cam plate/oil pump and everything else a high performance cam chest needs to reliably make big power.
Big Bore Kit
114" to 128" big bore kit
Aluminum construction cylinders
No case machining required
4.250" bore
Forged pistons
11.1:1 compression ratio
Cam
S&S 550 gear drive camshaft
Designed for big bore applications
Oil Pump/Cam Plate
Precision machined from billet aluminum
Blue anodized finish
Passage plugs removable 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
Pushrods
Quickee pushrods with chrome pushrod tubes
Tappets
S&S precision tappets
Tappet Cuffs
Hard anodized black coating
Billet aluminum construction
Stronger than stock material eliminates distortion
Improve tappet stability in high lift and high RPM situations
Valve Springs
Work well with cams up to .605 lift
High-performance conical single wire springs
Includes all gaskets, bearings, and hardware required for installation
Made in the USA
Product Note:Only fits stock 114 cubic inch engines.
Specification
Details
Bore
4-1/4 in.
Compression Ratio
11.1:1
Country of Origin
USA
Displacement
128CI
Drive Type
Gear Drive
Engine Type
Milwaukee Eight
Exhaust Duration
273.1 degrees front/277.8 degrees rear
Exhaust Lift
.232 in. front/.264 in. rear
Exhaust Lobe Center
106 degrees front/100.5 degrees rear
Exhaust Timing (Close)
30.5 degrees front/38.4 degrees rear
Exhaust Timing (Open)
62.5 degrees front/59.4 degrees rear
Finish
Varies (make selection above)
Intake Duration
218.9 degrees front/214.2 degrees rear
Intake Lift
.127 in. front/.099 in. rear
Intake Lobe Center
100 degrees front/104 degrees rear
Intake Timing (Close)
29.4 degrees front/31.1 degrees rear
Intake Timing (Open)
9.4 degrees front/3.1 degrees rear
Valve Lift
.550 in.
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
