Shovelhead Modifications
Maximum Air Delivery EFI system Race proven Fuel Injection system
Horsepower Gallery Evolution 80 Shovelhead Sportster Twin Cam 88/95 Evolution Unlimited Sportster Unlimited CV Carburetor Modifying the CV carb Tuning a CV carb Camshafts Selecting a cam Install a Big Twin cam Install Sportster cams Camshaft Specifications Evolution Shovelhead Sportster Twin Cam Download Cam Specs
Shop Manual Carburetor Exhaust Ignition Camshafts Cylinder Heads Pistons and Cylinders Drive Train Shop Manual Appendix $20 Bike Lift Plug Wires Spark Plugs Engine Tuning Nitrous Oxide Motor Oil General Information WEB Links Books and Manuals Miscellaneous Performance Calculations Estimate Horsepower Estimate 1/4 Mile Time Estimate Top Speed Engine Displacement Exhaust Length Gear Ratios Air Density