What is considered a high duration camshaft?

What is considered a high duration camshaft?

Measuring duration at 0.050-inch tappet lift has become standard with most high-performance cams. Most engine builders feel that 0.050 duration is closely related to the rpm range where the engine makes its best power.

How do you read Comp camera numbers?

COMP Cams uses two-number designations for all its engine families. The LS engine is designated 54 and this number is generally the first two numbers that define the actual cam part number. Other examples include small block Chevys -12, big block Chevys -11, and 5.0L small block Fords -35.

Does a bigger cam give more power?

Does a camshaft increase horsepower? Yes, a camshaft adds 10 to 20 horsepower depending on the setup. To get the full potential of the high-performance camshaft, you’ll have to swap out additional components like the air intake, exhaust manifold, injectors, and valve heads.

What are good camera specs?

As a rule of thumb, 5 megapixels is enough to make a sharp 8-by-10-inch print; and 8 megapixels is enough to make a sharp 11-by-14-inch print. A 10-megapixel camera can produce acceptable prints of up to 13 by 19 inches, though they may lose some detail.

What happens when you over tighten valves?

If a valve is over-tightened, it deforms the tubing and the connection, as mentioned earlier. These deformities create cracks and gaps where the fluid can begin leaking out.

What makes a cam sound choppy?

Registered. LSA (lobe separation angle) determines the choppiness, it has to do with the overlap of when both valves are open, as in when the exhaust valve is closing and the intake valve is opening to pull fresh fuel in on the intake stroke after pushing out the burnt fuel. Most GM cams come on a 112, 114 or 116 LSA.

What does retarding a cam do?

Advancing or retarding the cam pushes the centerline of the camshaft to one side or the other of the crankshaft centerline. This changes the Timing of the valve opening and closing events, in relation to the position of the piston in the cylinder.

How much hp does a comp cam add?

Yes, a camshaft adds 10 to 20 horsepower depending on the setup. To get the full potential of the high-performance camshaft, you’ll have to swap out additional components like the air intake, exhaust manifold, injectors, and valve heads.

What makes a cam have a lopey idle?

For the low-buck street guy to get a lopey idle and see an increase in power without a drastic decrease in driveability, he needs a cam with a lobe-separation angle of 110 degreesthe same lobe lift as recommended earlierand duration numbers of about 218 degrees at .