They make castings for CMC (Camshaft Machine Corp.) and EPC (Engine Power Components) and others. side, aluminum1010617990350.LT5, ZR1, DOHC, 32-valve, drvs. JavaScript is disabled. (Yes or No), Will Hub Centric Rings Stop Vibration? 4226 what kind of camshaft is it. This is what is on the cam, it would not let me past a picture here. All of these applications had the same specs as the initial 1967 application. A roller camshaft has the valve opened faster and remains at a higher lift for a certain time; it allows more airflow and more power, which reduces wear. The LEA is an engine produced by General Motors for a wide variety of compact and midsize vehicles. Anyone have any idea what make and specs are of this cam? In 1998, head c/n 24575507 arrived with a heart-shaped combustion chamber against a D shape. Re: camshaft identification. By visual inspection. (Yes or No). The greater number of degrees means there is less overlap between the intake and exhaust lobes. . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. They minimize friction, which ensures the camshaft contains more power. Also a great fitting cam for the earlier 302 or 327 Solid lifter Hi-Po motors used by Corvette, Nova or Camaro. I am partially colorblind so they may be sort of tanish as well. I have this in a recent purchase5.3 cast-iron ls engine numbers are256373-18and 32340135Im at a loss..can you please help Jeff?.cheers dave. Then do the same process with the lobe at 0.050 on the closing side. DOHC is a production to improve the volumetric of the internal combustion engine in which it has more power than a simple overhead cam. Could someone help me identify these cam numbers ? Grind numbers are HR 224/339. Getting a camshaft can be a burden on many car owners; it works well when you have the right one. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. That particular cam put my son's pump-gas 406" SB Chevelle to an 11.80 E.T. No smoke, but I have not checked compression yet. There are 3 different ways to select your camshaft tightly. The car came with the two cams you identified above, Stored in cardboard tubes, With the #5054 & date 1971 stamped on tubes. The first two numbers are the degrees of opening being 210 for the intake and 218 degrees for the exhaust given normally at .050 inch of lift. My buddy says its a mild cam thats bigger than a stock LS6 version, but he didnt have any more information. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. The only thing we dont know from these number is the cams intake centerline. Stamped on end is Z099, also has three pink dots above that stamping. CAM 6964 1969 CAMSHAFT ID. The Fora platform includes forum software by XenForo. i have a 383 chev engine ibought and would like to know what cam is in it. Privacy Policy. To be sincere, flat tappet just owns the name flat. The block casting number on smallblock and big block Chevy V-8 motors is located on a ledge found at the rear of the block, most often on the driver's side. The radiator, hoses, timing assembly, belts and fan will need to be removed to access the camshaft. Crower's cam specifications and printable cam card finder Also can i safely run the Xtreme Energy, XR294HR on my 383 Vortec 906 heads and screw studs ? It was later decided to build a supercharged version of the LS3 and it has less compression at 9:1:1 to run safer under boost. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. BBC Cylinder Head Casting Numbers RECTANGULAR PORT - Valve size 2.19 intake, 1.88 exhaust IP = Intake runner volume OVAL PORT - Valve size 2.06 intake, 1.72 exhaust BBC Camshaft Part Numbers Note 1: 80 deg overlap, 396 375hp L-78/L-89, 427 425/435hp L-71/L-72, 454 450hp LS-6, HP streetof engines we now know as Small Block Chevys. Analog system. Small Block Factory Cams We have it in internal combustion engines and some electric motor speed controllers. How to Identify an LS Engine - OnAllCylinders Different chamber volumes, port volumes, port locations, valve sizes, etc. The suffix provides the. They dont own the name flat, but the lobes of roller camshafts are perfectly flat. Looking Back At The Famous Duntov Small-Block Chevrolet Camshaft Canadian made ERTEL brand. I can't help you in regards to who actually did the final grinding. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. Specs @ 0.50 Cam Lift Opens Closes Duration SAE Specs@ (0.06/Rocker Arm Ratio) Cam Lift Opens Closes Duration Cam Lift Gross Valve Lift Center Line C/L Rocker Arm Ratio Valve Lash Clearance C-400-P INT. The 8.1L FO is 1-8-7-2-6-5-4-3 where a 454/7.4L is 1-8-4-3-6-5-7-2 as seen in Figure 1. SMALL-BLOCK CAMSHAFTS AND COMPONENTS - Chevrolet Small Block Casting numbers Big Block Crankshaft Cylinder Head ID Use these casting numbers to identify the heads you have. A native of New Haven, Conn., Floyd Drake III began writing in 1984. Stock GM LS engine cams feature LSA anywhere from 116 to 121 degrees because GM is concerned with creating a very smooth idle. Each number has a meaning and an interpretation. Camshafts are stamped by the manufacturers as a means of identification. From the distribute drive gear down are the folloing markings: CWC, 06, C14, EP1. If you are looking for the actual Chevy engine codes that are stamped into the block during assembly, Nasty Z-28.com has an excellent block stamping number decoder. Compare Related Articles. The second lobe number 3711 refers to the same family of lobesthis one specd at 269 degrees advertised with 216 degrees at 0.050-inch tappet lift with a lobe lift of 0.330 and a theoretical valve lift of 0.561-inch. E I just rebuilt the carb as it was pretty dirty and leaked at the accel pump. Check this castingcarefully to determine which features it may have. How Long to Drive After Reset Computer to Pass Emission Test? Retired GM employee, John Hinckley, an NCRS Master Judge, explains the one number . What do camshaft numbers mean? - Quora Can You Register a Car in a Different Name than on the Title? Any info helps, or where I can find. A DOHC is known as a dual overhead cam. I have a Pontiac camshaft with 960938 number on the backside. The Chevy orange will appear as new for decades.Gear shifting is accomplished with a rebuilt 1960's HURST Competition Plus shifter specific to the C2 Corvette w/Borg Warner which is extremely rare.Ignition is handled by a computerized multiple spark discharge controller providing instantaneous throttle response by way of multiple sparking at . If you notice any mistakes or have any additions, use my contact me form and let me know so I can update the list. Drivetrain: '95 T56, pro 5.0 shifter, hayes clutch, Stock 10 bolt with 3.42's There are many numbers and terms used to describe the design of the camshaft and it's important to know how these numbers will affect the performance of your engine. Can you tell me the specs on this cam from these numbers? The lobes are also listed with various theoretical valve liftsthe one were interested in would be the LS1s 1.7:1 rocker ratio that delivers 0.558-inch of lift. Visit www.jamsionline.com to shop today. The GM Generation I and Generation II (LT) engine families are both derived from the longstanding Chevrolet small block V8.The Generation III small-block V8 was a "clean sheet" design, which replaced the Gen I and Gen II engine families in 2002 and 1995 respectively.. Like the previous two generations, the Buick and Oldsmobile small blocks, the Gen III/IV can be found in many different brands. It is typically located in the center of the cam between the lobes. In 1973, it was the cam for the 307/115hp; 350/145hp, 175hp, 190hp; and 400/150hp. Chevy V8 BBC Block and Head Casting Numbers. back of cam has 660 371079 front of cam has s42008L, i have a 572 hemi and i am in the process of pulling the cam but the harmonic damper is being a pain . side, aluminum1017439091-95350.LT5, ZR1, DOHC, 32-valve, pass. 14088552 Leave a comment at the end of this post if you cannot find the information you want. If you want to know where the intake centerline is located, all you have to do is install the cam in the engine and then degree the cam. Add the two numbers together and divide by 2. Thanks, Your email address will not be published. A pushrod is a metal tube constructed to transfer the valve motion of a lifter riding on the camshaft directly to the value. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. Cam is in used shape but with little to no wear. The numbers are just figures a manufacturer uses to identify their products and to track them sometimes. Less overlap generally produces a more stable idle while more overlap makes the idle lumpier. (Yes or No). There following are ways you can tell a difference: As the name implies, these sets of numbers reveal the model of the camshaft. Quick View. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. Chevy SBC 395/401 Lift Camshaft Kit 3736097 Duntov 283 Fuel Injection camshaft identification - Don Terrill's Speed-Talk Mon to Fri: 8am - 5pm CDT; Gandrud Chevrolet 919 Auto Plaza Dr. Green Bay, WI 54302; Sales: 888.284.7491 performance@gandrud.com; Contact Us; Connect With Us Small Block Chevy Factory Camshafts - NastyZ28.com . For as simple as this product appears, it is actually a very complicated piece of engineering if you study it closely. The next two numbers are the valve lift of . This sometimes is tagged stressing when you can just tell by looking at numbers, but in the absence of a degree when or dial indicator, an analog is required to make your best decision. Chevy . While a simple call to the COMP Cams CAM HELP tech line (1-800-999-0853) and short discussion with one of the highly informed tech line personnel will always get you the right answers, having a little personal knowledge on the topic is always a good idea. The Chevy Big Block's Camshafts can be identified by a number that is cast or stamped and is usually located in between the CAM lobes. 1963 Chevrolet Corvette L75 327ci 4 SPD RESTORATION What are your thoughts on the #5054 or anything else? Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Lift of tested lobe could be .300" before wear. Under that heading toward the bottom we found a tab for the Cam Lobe Master Catalog. For instance, the Duntov cam has a GM part number 3736097 but cast into the camshaft is the number 3736098. On the home page, we looked for the Information tab and then clicked on Catalogs. Camshaft identification | Hot Rod Forum Any way to to determine the type of cam from the outside? 49 BBC -6 ATC 223 78 BBC 32 ATC 290 .298 .447 . Can a Wheel Speed Sensor Cause Limp Mode? It's for a 99-04 truck. Casting numbers used on factory 366ci tall deck engines (some used on multiple engines): *ending 328: 1980 through 1991. You can make a sure bet by just selecting randomly but your engine life will be in big problem. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The Chevrolet Big Block Camshaft Part Numbers - WOW Muscle Cars journal.3.00" stroke3876768.283.forged..small journal.3.00" stroke3884577.327.forged..small journal.3.25" stroke3892690.350.forged..medium journal3.48" stroke3911001.307,327cast.medium journal3.25" stroke3911011.307,327cast.medium journal3.25" stroke3914672.327.forged..medium journal3.25" stroke3923279.302.forged..medium journal3.00" stroke3932442..267,305,350..castmedium journal3.48" stroke3941174.307,327cast.medium journal3.25" stroke3941178.302.forged..medium journal3.00" stroke3941182.350.forged..medium journal3.48" stroke3941188.350.forged..medium journal3.48" stroke3949847.283..forged or cast..sm. These numbers only describe the functions or tell the specifics of each product. Understanding Cam Design. Identifiers: Letter R, CWC, EP1, C4 and E8. They include: Identifying with your eye. After working as a reporter in Oregon, he is now based back home in New Haven. Camshaft Specifications and Terminology - Speedway Motors They include: The essence of knowing how to identify your camshaft makes it easy to avoid errors, unnecessary bills, and frustrations that come along with having the wrong camshaft. We found it under the heading of Xtreme RPM for LS1 lobes, Hi Lift. Are you a newbie in dealing with cars and you seem not to know how useful a camshaft is and what is used for? Deciphering The Differences In The Chevy 2.2L Engine Match the number to a Chevrolet camshaft part number listing. One of these cams looks unused and the other at best slightly used.
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