When did the Harley Davidson FLH frame come out?
The FLH Designation started as a more highly-tuned version of the FL with high-compression heads, higher-lift cams, and polished ports in 1955. The FLH model was given a new frame in 1958.
Can a high lift cam be used in a stock engine?
Using a high lift cam with a stock or lower displacement engine may be an exercise in futility. It is essential to follow the manufacturer’s instructions carefully, because cams often require head work in order to keep the valves from coming in contact with each other or with pistons.
What are the specs for a Harley Davidson camshaft?
Intake Open Intake Close Exhaust Open Exhaust Close Intake Duration Exhaust Duration Overlap Intake Lobe Center Exhaust Lobe Center Lobe Sep. Angle Intake Lift Exhaust Lift Intake Lift TDC Exhaust Lift TDC RPM Low RPM High Min. CID Max Est HP
Which is better high lift or long duration cams?
In general, high lift long duration cams are for high power at high revs. The lower lift and shorter duration cams will skew the power curve down so you can get more low end torque at the expense of high-end power. With less aggressive cams you will also have less maintenance, because the springs and pushrods don’t do as much work.
What’s the lift of a flathead performance Cam?
They just designed them with low duration for good torque and drivability. The Mercury 8CM cam had a lift of 0.338, while all of the Ford V8 cams had 0.307 lift. It is easy to get more lift by increasing the duration, and yet, many of the performance cams have less lift than the 8CM.
What kind of camshaft does a stock lift rule use?
Stock Lift Rule, best on ¼ to 3/8 mile tracks, good mid-range horsepower. Howards Cams, Oval Track Lift Rule Hydraulic Flat Tappet Camshaft, Chevy SB, 227/235 @ .050, .390/.410, 112, Vacuum Rule
Intake Open Intake Close Exhaust Open Exhaust Close Intake Duration Exhaust Duration Overlap Intake Lobe Center Exhaust Lobe Center Lobe Sep. Angle Intake Lift Exhaust Lift Intake Lift TDC Exhaust Lift TDC RPM Low RPM High Min. CID Max Est HP
The FLH Designation started as a more highly-tuned version of the FL with high-compression heads, higher-lift cams, and polished ports in 1955. The FLH model was given a new frame in 1958.