How To Identify Camshaft Numbers You must always use the lifter type that the cam was ground for as each lifter type requires a unique camshaft design. Camshaft designs are called profiles and today we are going to look at what makes a profile. Most cam companies include an intake centerline number, which is the position of the intake lobe centerline (in crankshaft degrees) relative to top dead center on piston number one. The main focus of this article will be on a conventional OHV (overhead valve), cam-in-block engine configuration using two valves per cylinder, as shown above. Without a properly designed camshaft, the air pump we call an engine would be useless. Find the profile or grind number. This also refers to the term overlap which is the amount of time both the intake and exhaust valves on one cylinder are open at the same time. Solid lifters must have valve lash manually adjusted in regular intervals but can withstand more rpm. At the end of a roller cam lifter, as the name suggests, you’ll find a rolling cylinder, which the lobe pushes up with reduced friction as it rotates. Any help is appreciated. – 0.500” commonly referred to as 500 lift. I have a "CWC" stamping.... Camshaft Spec Card Search - … These are called dual profile camshafts (sometimes dual grind). Mechanics consider a small amount of end play acceptable, since it permits the camshaft to shift in relation to temperature gain. Using your ratchet and socket, remove the center bolt on the camshaft gear and remove the gear from the camshaft. See all 6 photos Begin as you did before with a dial indicator on the lobe of the cam. If you want to be a real baller get a custom grind cam built specifically for your engine combination and intended purpose. Camshafts are a subject that all car guys love to talk about, and those who listen tend to roll their eyes at the staggering number of terms and numbers. Typically camshaft manufacturers list this measurement by multiplying the cam lobe lift by the stock rocker arm ratio, usually 1.5:1. Some manufacturers measure from 0.004”, others at 0.008” and others somewhere between. Camshafts are listed in order of length, from shortest to longest. For example, you might have a camshaft stamped with the numbers 899C, followed by various numbers with degrees. A crankshaft is a shaft driven by a crank mechanism, consisting of a series of cranks and crankpins to which the connecting rods of an engine are attached. Duration @.050" is a measurement of the movement the cam follower, in crankshaft degrees, from the point where it’s first lifted .050" off the base circle on the opening ramp side of the camshaft lobe, to the point where it ends up being .050" from the base circle on the closing ramp side of the camshaft lobe. Camshaft, in internal-combustion engines, rotating shaft with attached disks of irregular shape (the cams), which actuate the intake and exhaust valves of the cylinders. The 0.050” measurement is the amount of duration from the point the valve is open 0.050” to the point it is 0.050” from closing. A cam … The lifters and camshaft lobe wear together to make a perfect pair. The cam companies all have their own "grind numbers". The flat tappet lifters are flat on the bottom and glides on an oil film on the lobes. It also allows more exhaust to escape. Duration @.050" is a measurement of the movement the cam follower, in crankshaft degrees, from the point where it’s first lifted .050" off the base circle on the opening ramp side of the camshaft lobe, to the point where it ends up being .050" from the base circle on the closing ramp side of the camshaft lobe. camshaft application chart notes: comments mech/ dur @ .050” adv. If you need a new camshaft, it can be a bit confusing to put together the identification number of the camshaft you need for your car. Most Cam Cards will list duration. Step 15: Remove the camshaft gear. Randomly choosing a camshaft profile usually has lackluster results without lots of research and practice. dur. For instance, the number for a Toyota 3SGE would be CS 3SGE. Meanwhile, a spring exerts a tension pulling the valve toward its closed position. However, if you want to find the duration for the camshaft in your engine, you can calculate it. The farther you can open the valve, the more air you can theoretically move. It's a 'Camshaft Machine' brand replacement cam for the GM part number 3863151 small block Chevrolet hydraulic lifter camshaft (350 HP 327) 222*@.050" cam lift..447" lift. This is especially true with flat tappet lifters. CAMSHAFT QUICK IDENTIFICATION GUIDE *Axle Type: S = Steer, D = Drive, T = Trailer Diameter at Spline Diameter Spicer Cam Head End & No. With a W16 to keep in shape, the Veyron employs a quad-cam setup with a total of 64 lobes. Depending on the model of vehicle, you may also need an exhaust grind number, which will be stamped onto your car's exhaust inlet, and it will follow the same form as the numbers on the camshaft. Lobe Shape. My handle is Rudder2fly. The shape, size and placement of these lobes control the engines ability to function efficiently in turn creating more power. This number is ground into the cam and can't be altered without physically changing the camshaft lobe profiles. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. The camshaft consists of a cylindrical rod running the length of the cylinder bank with a number of cams (discs with protruding cam lobes) along its length, one for each valve. There are 4 types of lifters commonly used in engines. If your camshaft is for a custom vehicle or alteration, you may need to get even more specific. Part number is 100172 which really tells you nothing. In addition, a small amount of end play allows the cams to better resist wear by shifting their position in response to especially hard contact. Comp Cam Identification Numbers. Roller lifters have rollers that ride on the cam lobes and provide less resistance and more power. There’s lift and duration, overlap and lobe centers, lobe separation angles and so on, and all of them have numbers attached. A flat tappet cam will be much more pointed, similar to the small end of an egg. Rocker arm design also plays a part in the total lift based on its ratio. Copyright 2021 Leaf Group Ltd. / Leaf Group Media. Step 16: Install the camshaft gear onto the new camshaft. As mentioned before the intake and exhaust lobes each have their own design and therefore may be different. A cam lobe forces a valve open by pressing on the valve, or on some intermediate mechanism, as it rotates. Roller: 350 ZZZ through ZZ2 crate motors The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. However, if you break the number down one piece at a time, it becomes easier to identify. The cam's centerline specification is used to determine the position of the lobes on both the cam and as installed in the engine. There are typically 2 duration measurements given for profiles, advertised and 0.050”. Find the model prefix. ... the camshaft had some weird numbers that I can not identify. 114* LSA . Posted on: 2007/9/26 13:50 _____ CA18DET 1200 lagwagon retired LAG510 - SR20DET 1600 sedan … We all know that there are 360 degrees in a circle but you have to understand that the crankshaft rotates at half the speed of the crankshaft. Die Messuhr auf das Ende der Nockenwelle nullen. Narrow your final selection by Diameter at Spline End and Number of Splines, Diameter at Spider and any other information listed. Thanks author: message: admin. Advertised duration on the other hand is not standardized. Too much lift and you can make contact with the pistons not only ruining parts but your day as well. … This results in lower cylinder pressure and less low-end power. Neal Litherland is an author, blogger and occasional ghostwriter. This requires a little more time but … 1 to establish exactly where the camshaft is in relation to the rest of the engine. A low duration camshaft works best at lower RPMs. The grind number gives you the basic cam info. The hydraulic lifters on the other hand are more of a set it and forget it option but you will be limited in the amount of rpm they can handle. It’s okay to reach out to the camshaft manufacturers for advice (you’re not asking for directions). Old Lunati Camshaft Part Numbers. Of course all of the engine parts must work together but we typically design the camshaft for a particular engine. At high rpm, this helps … Most cam cards will provide duration numbers at 0.050, and it is easy to measure at this amount of lift. Gene Stoehr. Find the exhaust number and add it to the end of the list of numbers. Anytime you replace a camshaft you must also replace the lifters. Do not rotate camshaft or crankshaft with timing belt removed and cylinder head fitted. For example, you might have a camshaft stamped with the numbers 899C, followed by various numbers with degrees. of lift. How To Identify Gm Camshafts . However, at low rpm, the open valves reduce the pumping pressure of the piston. I pulled a new looking camshaft from my 400 SBC. Re: Where can i find camshaft Id Numbers . It's the cam part number and grind number . Camshaft Basics - What do those number mean? Advantages in Numbers. A flat tappet cam will be much more pointed, similar to the small end of an egg. The basic action of a cam. A camshaft with 106 degree lobe separation angle will have more overlap than one with 112 degrees. Number Manufacturer Years Cid Lift Lsa Icl Duration Lifter Notes ; 1: 10134334: Chevrolet: 350: 480″/.480″ 114 @ 0.050″ 235/235: Hyd. The most important being the gap between the intake and exhaust valves, the piston to valve clearance and the intake charge pressure. This information is required to calculate the ignition point and injection point, among other things. If you reuse lifters you will quickly destroy the lifters, camshaft lobes or both. Camshaft Part Number Search . The roller cam will have much more rounded lobes, like the big end of an egg. The 0.050” measurement is the amount of duration from the point the valve is open 0.050” to the point it is 0.050” from closing. More bottom end, less top end. We are looking at how many crankshaft degrees the valve is open. These are called dual profile camshafts (sometimes dual grind). Duration is measured in degrees and refers to how long the valve event (valve open) lasts. Another factor influencing valve lift is valve spring compression. I Can't seem to find enough numbers to make a complete ID number. The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for. In the image on the left is a hydraulic roller cam, the rounded lobes are readily appearant compared to the flat tappet cam to the right of it. Roller camshafts, on the other hand, must take end play into account. Camshaft Number Lookup . Because you need at least one camshaft per cylinder bank, inline engines need as few as a single camshaft, whereas a V arrangement would require at least two. A rough estimate is a 4 degree change in cam phasing will change the cranking pressure by 5 psi (advancing increases pressure, retarding decreases pressure). i pulled apart an a14 bottom end for rebuild and noticed it had been tampered with before. In the image on the left is a hydraulic roller cam, the rounded lobes are readily appearant compared to the flat tappet cam to the right of it. No matter which camshaft you choose remember, Wrench…Drive…Enjoy…. Take the 899C and add it to the model prefix. Camshaft basics explained. On one of the cam ends it reads Iskenderian B7 09 DS E4. This is the best way to get the most out of your engine and is well worth the money. Conversely higher duration allows you to make more power up top but reduces low end torque and gives you a rougher idle. Add the numbers together. We compared these specs to the catalog and because there is no list number on the end of the cam, we will assume this was a custom-ground camshaft. It is typically located in the center of the cam between the lobes. Using a Dial Indicator and Degree Wheel, find the opening and closing points of the valves at 0.050 in. This number should be on your camshaft, followed by a number of degrees. Even though the stock cam has a duration of about 250 degrees, a mild aftermarket cam like the Engle 100 (duration 270 degrees) will still move the point of maximum torque/horsepower further up the RPM range. If the intake valve opens AFTER TDC, use a negative value. Locate the ID number on the camshaft. This can be altered by degreeing the cam after it's been installed in the engine. For example, if your cam lobe lift is .319 and you're using a 1.5:1 rocker arm ratio, you can take .319 x 1.5, which is .479 inches of overall valve lift. valve lift lobe sep power lifter below part # hyd stage int exh int exh int exh int exh range idle part# part # american motors v8, 1966-92 290, 304, 343, 360, 390, 401 c.i. My numbers were YB1 behind the front journal and RYB 10 stamped at the rear journal. Lift is typically measured in thousandths of an inch i.e. Lobe separation angle is the measurement in degrees between the intake and exhaust lobe centerlines. His experience includes comics, role playing games and a variety of other projects as well. When the lobe reaches its highest displacement … The roller cam will have much more rounded lobes, like the big end of an egg. Although it’s nothing more than a stick of steel with bumps (lobes) on it, the camshaft is one of most important pieces of the 4 stroke engine. Cam timing at .050" is: intake opens 1 degree BTDC, intake closes 41 degrees ABDC, exhaust opens 50 degrees BBDC, exhaust closes 8 degrees BTDC. The 7661-11 is a serial number specific to that camshaft only. Lobe lift refers to the distance that the camshaft can move the pushrod in turn “lifting” the valve off of the seat (opening the valve). ... Vice versa if you advance the camshaft. 4. Take the 899C and add it to the model prefix. Ted Eaton responded and thought my cam was a Melling Cam. The lobes machined into the camshaft are the magic sauce that can make or break an engine. Warning: When removing the camshaft, you want to make sure that it does not fall, as it can damage the bearings in the cylinder head. Camshaft ID, Crankshaft ID Help needed. After finding camshafts in the Cam Length column, determine camshaft head style, using the Head Styles chart and head width dimensions. Some actually give you some cam data, others do not make too much sense. Long duration camshafts also create more Valve Overlap. There is one lobe for every valve in the engine with the intake and exhaust lobes each having its own design. Maybe you can still use this info. As I said before it’s extremely important to match the cam to the engine and its intended purpose. Valve lift is computed for stock rockerarm ratio (1.73:1 for 400, 351-C & Boss 302: 1.60:1 for all others) Source of information: Ford Performance by Pat Ganahl, an excellent reference book on Ford performance engines (It is why a camshaft's RPM Range is based on its duration.) Cwc Camshaft Markings . duration is 274 degrees, H is for hydraulic, an 06 tells you the lobe separation angle of 106. In piston engines, the camshaft is used to operate the intake and exhaust valves.The camshaft consists of a cylindrical rod running the length of the cylinder bank with a number of cams (discs with protruding cam lobes) along its length, one for each valve.A cam lobe forces a valve open by pressing on the valve, or on some intermediate mechanism, as it rotates. Nockenwellenhalterung anbringen, Schrauben einsetzen und handfest anziehen. note: the above cams can be used in the 351w & 302 high output engines by rewiring the distributor to firing order 1-5-4-2-6-3-7-8. roller camshafts for engines originally equipped with roller cams mc24226 hyd 3 212 222 289 300 .491 509 107 117 2800-5000 fair 2205 b, n Some of Isky's grinds are … Match the number to a Chevrolet camshaft part number listing. I believe what I have should be 2 Desoto Cams and one either dodge, or chrysler. These factors also influence cam duration. Less duration tends to produce more low end torque with a better idle but reduces the ability to make power in the upper rpms. There are some other numbers between the lobes: C8 CWC 1578 and some others I … The camshaft in your engine may be the most complicated piece of steel in your engine. He holds a bachelor's degree in criminal justice from Indiana University, and resides in Northwest Indiana. COMP offers this as a service to anyone who is looking for a custom combination of specs that are not listed as an “on-the-shelf” cam. Match the number to a Chevrolet camshaft part number listing. some of the nuts that held the conrod caps on were rounded and the pistons looked possibly not the originals... anyway the cam has "169" stamped on the face under the cam sprocket. The camshaft sensor enables the engine control to determine the exact position of the crankshaft drive. How To Identify A Camshaft. The camshaft is an important part of your vehicle; it helps certain elements of your car run smoothly, from regulating the timing of your valves to bringing in fresh air to kick out exhaust. Advertised duration on the other hand is not standardized. Be aware that the more you open the valve the closer it is to the piston. Most cam companies include an intake centerline number, which is the position of the intake lobe centerline (in crankshaft degrees) relative to top dead center on piston number one. The most extreme camshafts come in the shape of those featured on the Bugatti Veyron. Cam companies use the intake centerline of cylinder No. Also at the rear journal were GO8 with the letter M inside the O. Ted went on to give the spec's for the Melling RYB-10 camshaft. More on that another day. Optional camshaft number requirements are listed at the link in Resources. Overlap creates lower cylinder pressure and a rougher idle (bumpity bumpity). This number should be on your camshaft, followed by a number of degrees. Roller cams are more expensive, but also more reliable. A number of factors influence valve lift. There is a limit to the amount of air an engine can move and opening the valve further than needed becomes counterproductive. Effect Of Changes In Cam Timing And Lobe Separation Angle The following tables illustrate how variations in lobe separation angle and cam timing will effect the behavior of the engine in which the camshaft is installed. Telling one from the other visually is relatively easy. Often roller cams will be made of steel and will be shiny instead of a flat black/gray color of a flat tappet cam caused by the anti-wear treatment it is given. 3. There can be a varying number of camshafts in an engine, depending on its cylinder arrangement and valve operation. Lift, duration, Lobe separation angle and overlap, what you need to know before choosing a camshaft. There are typically 2 duration measurements given for profiles, advertised and 0.050”. On this page, you can find out how a fault on the camshaft sensor can manifest itself, and which steps should be taken during troubleshooting. The cams and the camshaft are usually formed as a unit, with the cams set at angles so as to open and close the valves in a This creates more power. Fit camshaft carrier, fit and finger tighten bolts. A 110-degree lobe separation angle means the peak intake and exhaust opening points (max lift) are 110 degrees apart. Zero the dial indicator against end of the camshaft. is this standard? Like the Crane 274HO6-tells you the adv. It has a number stamped in the end: 869340. Hydraulic flat tappet, solid flat tappet, hydraulic roller and solid roller. The camshaft can be thought of as the brain of the engine, and it has a very large effect on the amount of power an engine makes as well as where in the rpm range that power occurs.