S&S 475 Cam Chest Kit For Harley Twin Cooled Milwaukee-Eight

Big horsepower numbers are the status symbol of a performance engine, but more often than not, the bolstered torque spec is what you really feel when riding it. This is particularly relevant for the heavy touring machines as it’s torque that rockets you onto the highway and it’s definitely torque that lets you effortlessly push a loaded bagger around slower traffic. Produce stump pulling torque down low in the RPM range as well as maintain respectable horsepower numbers.

Features:

Created for M8 powered bikes
Kits include camshaft, oil pump, cam plate, pushrods, pushrod tubes, tappets, tappet cuffs, top and bottom collars, keepers, and seals
Gear drive kits include drive gears
Made in the USA

Oil Pump/Cam Plate Info:

Precision machined from billet aluminum
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 stop debris from entering oil pump
44% flow increase on supply side and 58% on scavenge side
Pressure relief valve is adjustable with unit installed

475 Cam Info:

Front Intake open/close 6.2°/27.2°
Front Exhaust open/close 55.5°/28.5°
Rear Intake open/close 2.2°/31.2°
Rear Exhaust open/close 52.5°/20.2°

Front Intake duration 213.5°
Rear Intake duration 213.5°
Front Exhaust duration 263.9°
Rear Exhaust duration 252.5°
Intake Lift .475"
Exhaust Lift .475"

Front Intake Lobe Center Line 100.5°
Front Exhaust Lobe Center Line 103.5°
Rear Intake Lobe Center Line 104.5°
Rear Exhaust Lobe Center Line 106.0°

Front Intake Lift at TDC .107"
Front Exhaust Lift at TDC .208"
Rear Intake Lift at TDC .093"
Rear Exhaust Lift at TDC .170"