How do I identify a camshaft?

Locate the ID number on the camshaft. It is typically located in the center of the cam between the lobes. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. via

What do the cam numbers mean?

This is defined as the number of degrees of crankshaft rotation that each valve that spends off the seat. All camshaft specs are expressed in degrees of crankshaft rotation. Crankshaft degrees are used because that's the easiest way to measure these points on the actual engine. via

How do I find the manufacturer of my camshaft?

  • Find the model prefix. The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for.
  • Find the profile or grind number.
  • Find the exhaust number and add it to the end of the list of numbers.
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    How do I find my camshaft number?

    There is an ID number attached to the camshaft. It is usually in the vicinity of the lobes in the center. There will be an 8- or 9-digit number between them; the last four digits contain details about the cam and its application in particular. via

    What gives a cam 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 . via

    How do you read cam duration?

  • Using a Dial Indicator and Degree Wheel, find the opening and closing points of the valves at 0.050 in. of lift. If the intake valve opens AFTER TDC, use a negative value. If the exhaust valve closes BEFORE TDC, use a negative value.
  • Add the numbers together.
  • Add 180° to find duration.
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    How do you tell if your car has a aftermarket cam?

    A car with a cam will idle a little funny. The stock cam will rock the car back and forth every once in a while when it's hot out but, a car with an aftermarket cam will really get moving at times. If it sounds like and rocks like a 60's muscle probably has a cam. via

    How does cam lift affect performance?

    Designing a cam profile with more lift results in increased duration in the high-lift regions where cylinder heads flow the most air. Short duration cams with relatively high valve lift can provide excellent responsiveness, great torque, and good power. But high lift cams are less dependable. via

    What do Stage 2 cams do? (video)

    What is a Stage 3 hot cam?

    Details. If you're a rider that's looking to extract the most performance from your machine without going to more intensive mods like porting or boring, the Hot Cams Camshaft Stage 3 is the highest level of drop-in performance you're likely to find on the market. via

    What LSA makes a cam 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. via

    What does lobe separation do for a cam?

    Typically, narrower lobe separation develops peak torque at lower rpm and widening the separation tends to build peak torque higher in the rpm range. Nitrous engines, which make plenty of power and torque, often run wide lobe separation angles to moderate cylinder pressures and temperatures. via

    What is the difference between 112 and 114 LSA?

    According to Super Chevy magazine: A wider LSA figure (i.e. 114) moves the lobe centerlines further apart and will smooth your idle due to the decrease in overlap that it creates. The lower the figure (i.e. 112) moves the centerlines closer and will increase bottom end power, but your idle will suffer along with it. via

    Does a cam change the sound?

    cam controls the valve action and timing. better cylinder filling = more compression, bigger BOOM sound. engine is louder. simply put. via

    How do I know if my cam is bad?

  • Active check engine light.
  • Loud ticking or tapping sounds.
  • Metal debris in the engine oil.
  • Cylinder misfire.
  • Increased emissions as a result of misfiring.
  • Visible signs of damage.
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    What's more important cam lift or duration? (video)

    Which is better cam or lift or duration?

    Longer duration (higher number) improves top-end power but almost always sacrifices low-end torque. Lower duration improves low-end torque and makes the car idle better, but it limits top-end power, and you can get only so much valve lift with a short duration cam due to the rate-of-lift limitations of the lifter. via

    How do you measure cam size?

    Take your digital caliper and measure the smallest diameter on the cam. This is called the base circle. This cam measured at 1.10 inches and 87 thousandths. The next value you will need is the largest diameter on the cam, the lobe part, which is called the base circle and lobe lift. via

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