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 WebDec 13, 2024 · Even similar combinations can vary in what their ideal camshaft specs are. Luckily, Howards Cams and Racing Components has come out with a new line of shelf-stock camshafts for a wide variety of …
How to Read a Cam Card to Understand Camshaft Specs
WebApr 23, 2008 · Its the high energy 268 not the xe the specs are.. Good street performance with stock converter, choppy idle. Operating Range: 1500-5500 RPM Duration Advertised: 268° Intake / 268° Exhaust Duration @ .050'' Lift: 218° Intake / 218° Exhaust Valve Lift w/1.5 Rockers: .454'' Intake / .454'' Exhaust Lobe Separation Angle: 110° G Guest #4 · Apr 22, 2008 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 … cycloplegics and mydriatics
Comparing Camshafts: A History of Camshaft Specs and …
WebMay 1, 2016 · A tight LSA cam usually has a rougher idle due to increased overlap( given the same cam specs except for the LSA change) and does not make as much vacuum as the wider LSA cam. Intensity if found by subtracting the .050 duration from the advertised duration. A 270 adv. duration with a 220 .050 duration would have a hydraulic intensity of … WebJan 1, 2024 · More common are the P0340 camshaft position sensor circuit malfunction and P0355 crankshaft position sensor circuit malfunction. Using a digital multimeter (DMM), a quick check of sensor resistance can be made against manufacturers' specs. Visual inspection can reveal a physically damaged or oil-saturated sensor. WebFeb 5, 2024 · The specs are needed to properly Install and Adjust the Camshaft. The card also documents the specs. It's important to know your cam specs to properly select other … cyclopithecus