WebThe cam's centerline specification is used to determine the position of the lobes on both the cam and as installed in the engine. Most cam companies include an intake centerline … WebJun 29, 2024 · Written descriptions of idle quality, power range, compression, gear, and converter requirements only go so far when the same cam fits in a 283 or 406 engine. …

How to Read a Cam Card to Understand Camshaft Specs

On that same line in this cam card, the lift at the valve has increased from 0.321-inch at the lobe, to 0.545-inch at the valve. This is accomplished through the rocker ratio. Note that the card calls this ratio out at 1.7:1. If we multiply 0.321 x 1.7 = 0.545-inch. That’s the lift the engine will see at the valves. See more One area of confusion is certainly a camshaft timing card. All aftermarket and production camshafts use a series of terms and specifications to identify their operating … See more Let’s begin by describing exactly what a camshaft does. A camshaft is really a device used to convert rotating motion into linear (up and down) movement. This is accomplished by use of a cam follower or lifter that starts on … See more The next spec we’ll deal with is duration. This is defined asthe number of degrees of crankshaft rotation that each valve that spends offthe seat. All camshaft specs are expressed in degrees of crankshaft rotation.Crankshaft … See more This simple upward movement of the cam lobe can be measured in terms of inches (or millimeters) of lobe lift. On our sample Summit Racing Pro LS cam card above, the first line is called Lift and is detailed as either intake or … See more WebFeb 24, 2024 · Reading a Cam Card: Duration at 0.050″ Lift. The next line offers this cam’s specs at the industry standard of 0.050-inch of tappet lift. Since the crankshaft will turn fewer degrees between the 0.050-inch lift point on both the opening and closing sides, the duration specs will be smaller in degrees than the advertised specs. crystal chevon logan

Simple Way to Degree a Cam - MotorTrend

WebOct 7, 2016 · This predetermined amount varies between manufacturers. Duration at 0.050" is the degrees of crankshaft rotation between when the lifter is raised 0.050" and when it is 0.050" from its resting position. This is … WebSep 28, 2024 · Here are the stats for the Pure Energy Cam: RPM Range: 1200-5200 Lobe Separation: 110 Intake Centerline: 106 Duration: Intake: 246 Exhaust 263 Duration @050 Lift: Intake 203 Exhaust 212 Valve Lift: Intake 429 Exhaust 438 Lobe Lift Intake 286 Exhaust 293 WebSep 21, 2016 · Measurements typically range between 104 and 115 degrees. Tight Angle (104 degrees) Lower rpm torque range Increases maximum torque Higher cylinder … dvt below calf