gm camshaft identification numbers gm camshaft identification numbers

Contact. This was one of the best selling/most popular cams through the years past! force 120hz android The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 1.4 and 2.5 litres. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. Reading a Cam Card: Advance In this case: 108 + 116 = 224 degrees / 2 = 112 degrees. Can you tell me the specs on this cam from these numbers? By visual inspection. I have a 1969 z28 I bought a few years back from a friend who was orig owner. I'll post up a pic as well. Stamped numbers are 529506 and 031531. Your camshaft is important; your engine isnt meaningful without the contribution of the Camshaft. My 1968 Camaro Site. (396 BBC), Is this enough information to get the specs on this cam? The Chevy part number for that cam is 3896929. 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. The GM tube has the ID number as 3863151 which correlates to a L79 Cam however the stamping at the end is 920883. Because the camshaft orchestrates the entire valve system, your Chevy won't run properly without it. indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. Then do the same process with the lobe at 0.050 on the closing side. many years ago! If it is an aftermarket service replacement cam, it may not have the same last 3 digits of the casting number cast between the lobes. Hey Keith, we did some quick sleuthing and your cam MAY be for a BBC Marine (boat) motor application thats been discontinued. This is a job for professionals and the mechanically-inclined. diameter For instance, the Duntov cam has a GM part number 3736097 but cast into the camshaft is the number 3736098. Rear cam bearing journal is etched/engraved Fessler Killer Cams #38 Any info is appreciated. A 'VE Table' is one of two methods used to control fuel delivery, typically the secondary method with the primary being a MAF (Mass Airflow Sensor). I am partially colorblind so they may be sort of tanish as well. The next information engraved on the cam was HR 114. Oct 8, 2010 #2 Z z28rod Veteran Member Apr 30, 2009 4,472 hopewell junction,ny My buddy says its a mild cam thats bigger than a stock LS6 version, but he didnt have any more information. A DOHC is known as a dual overhead cam. 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. COMP Cams 12-600-4 Thumpr Cam, Small Block Chevy, 2000-5800 RPM. Part Number: Type: DUR @ .050" Lift: C/R: LSA: Usage: 14093643: Hyd. Are you a newbie in dealing with cars and you seem not to know how useful a camshaft is and what is used for? Why are Volkswagen Oil Changes so Expensive? Locate the ID number on the camshaft. Thanks for any info I Think its a crane cam but I cant match the stamped numbers anywhere. . Camshafts Melling offers a full line of OE replacement camshafts for cars, light duty, medium duty and heavy duty trucks. PG,63 4WD 1st series. This same pattern was followed throughout the 1997 production cycle. It is 8 figured random numbers and sometimes 9 figures with the last 4 numbers identifying the specific function of the Cam Shaft. When referring to LSAs, the larger the number, the more degrees of separation between the intake and exhaust lobes. Communication Number: ServiceManual Trucks Group36 VehicleElectronicControlUnit(MID144)DiagnosticTrouble Code(DTC),Guide Frombuilddate1.2007 PV776-88948891that a fault has occurred by illumination a malfunction indicator lamp and a message in the driver information display, if equipped. Now turn the engine clockwise and stop at 0.050 on the opening side of max lift and record the degree wheel reading. (Yes or No), Will Hub Centric Rings Stop Vibration? They are the flat tappet and roller camshaft. How to Turn off Daytime Running Lights (Explained), How to Turn Off Headlights While Car is Running. A pushrod is a metal tube constructed to transfer the valve motion of a lifter riding on the camshaft directly to the value. Can you guys help me pick a cam and fix my combo? CAM 6930 1967 CAMSHAFT ID. ). 25-12. Chevy V8 Crankshaft Casting Numbers. Chevy LSX454 Camshaft. i have a 383 chev engine ibought and would like to know what cam is in it. There are two types of cams that you can tell the difference without using a lens or going the extra mile to tell the difference. Vortec truck, Gen.I crate motors and ZZ4, roller cam, one piece rear seal: 12550592 : 97-up : 350 : crossbolted block, Gen.III, LS1, aluminum: There are 3 different ways to select your camshaft tightly. intake and 1.72 in. The HI-PO color coded stripes on the camshaft end are green, orange and red. I just rebuilt the carb as it was pretty dirty and leaked at the accel pump. Learn more about: Cookie Policy, Will a 50 Inch TV Fit in my Car? Indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. Many camshaft number reference sites exist online for V8 engines, but determining the camshaft specs for six- and four-cylinder engines may require contacting a Chevrolet parts department. Do not enter the -2 on dual cams part numbers or the (I) that indicates intake or (E) for exhaust. I was given a can that has the #s The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for. Run-out on. exhaust valves. The chevy part number for that cam is 3896929. You can basically find it in the center of the cam between the lobes. Switching to Synthetic Oil After 100k Miles: Pros and Cons. 14088552 Leave a comment at the end of this post if you cannot find the information you want. 1970 Mustang Mach I "Synergy Green Pearl"351 Cleveland - Fuel Injection "The Rattle Shaker" Complete nut and bolt rotisserie restoration LESS than 500 miles by C.A.R.S. In 1971 he installed a 1965 Corvette fuel injection system. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Chevy Intake Manifolds We would like to thank everyone that has contributed to the data provided on this site. Car AC Compressor Not Turning On (Causes and Quick Fix). It doesn't indicate a different cam or an earlier or later version. So why did this cam not have a lope to it in the 283, from everything I am reading long . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. As each engine model comes with a specific camshaft, proper identification is key to finding the right one. With this intake lobe: 0.328 x 1.7 = 0.5576-inch, which COMProunds off to 0.558-inch. On the home page, we looked for the Information tab and then clicked on Catalogs. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. We found it under the heading of Xtreme RPM for LS1 lobes, Hi Lift. How to Start a Car with a Blown Head Gasket (Explained). For instance, if you have numbers like 266H04, the last two digits are the numbers used to show the measurement of the lobes. Drivetrain: '95 T56, pro 5.0 shifter, hayes clutch, Stock 10 bolt with 3.42's Step 1 Find the model prefix. The 3709/3711 numbers are references to lobe designs. CWC is the casting ID for CWC Textron. Old school Comp 9000 Mallory Distributor and coil. (You must log in or sign up to reply here. All of these applications had the same specs as the initial 1967 application. (adsbygoogle = window.adsbygoogle || []).push({}); AutomobTips is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, Copyright 2022 - AUTOMOBTIPS | Auto Blog, Our website uses cookies to improve your experience. Answer (1 of 4): Most common specs for an engine would be for example. I can't help you in regards to who actually did the final grinding. 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. You can also use an analog system to identify unknown camshafts. 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. A native of New Haven, Conn., Floyd Drake III began writing in 1984. There following are ways you can tell a difference: As the name implies, these sets of numbers reveal the model of the camshaft. 14010280 Small Block V8 1979-1982 267, 2 bolt 14011064 Small Block V8 1983 350, 4 bolt 14011148 Small Block V8 1987-1989 350, roller cam, 1-piece rear seal 14016376 Small Block V8 1979-1982 267, 2 bolt 14016379 Small Block V8 1977-1979 350, 2 bolt or 4 bolt 14016381 Small Block V8 1980-1984 305, 2 bolt 14016382 Small Block V8 1979-1984 305, 2 bolt One of the primary differences between the GM GEN 3 and 4 ECMs are how they estimate airflow using VE Tables. A stamp is not a functioning part of a camshaft. On this page you will be able to look up the original part numbers for 1958-1965 348 and 409 Chevy engine components such as Bell Housing, Carburetor, Camshaft, Crankshaft, Distributor, Generator/Alternators, Radiator Hoses and Starters. Only thing is the idle mixture screws have little effect (oh no timing pointer either on order) so cant really tell timing. For a better experience, please enable JavaScript in your browser before proceeding. Good Day: 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. Now he serves as a regular contributor to OnAllCylinders. The recall affects several models of heavy duty Chevrolet Silverados and GMC Sierras with optional engine block heaters. It doesnt add to the function of the camshaft, nor does it play an important role. Information is premium and can save you from errors and spending excessively. It means the valve is open at 255 degrees. Cheers Bart, I have a cam that is stamped K 7 THEN ABOVE IT IS 1264 321 7273 WHAT DO I HAVE ITS NEW IN BUBBLE WRAP. There are 3 different ways to select your camshaft tightly. $850.12. After working as a reporter in Oregon, he is now based back home in New Haven. Carb number is stamped in this location as well as on an identification tag held on with one of the air . 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. A Guide To Ford V8 Engine Block Casting Numbers, 1952-1996. That particular cam put my son's pump-gas 406" SB Chevelle to an 11.80 E.T. They are not flat, and they are recognized with a slight crown on the face. ** Free Shipping for Engines & Transmissions* Learn More; 0; 888.284.7491 . Camshafts are stamped by the manufacturers as a means of identification. View (5) $203.95 More Info. That gives us our first clue where to look for the rest of the numbers. Melling listings include OEM applications to match the engine requirements desired including horsepower, economy and needed engine torque. This method requires you to do a few tasks like measuring some diameters and comparing them to the database. But this comes at the cost of reduced torque in the middle of the rpm band. How Long Does it Take for Oil to Drain Back into the Pan? The HR refers to this as a hydraulic roller camshaft while the 114 refers to the lobe separation angle (LSA). Small Block Casting numbers Big Block Crankshaft Cylinder Head ID Use these casting numbers to identify the heads you have. .390 .410 310 320 1.50 in 1968, it was the cam for the 307/200hp; 327/210hp, 250hp, 275hp, 300hp; and 350/295hp. They are widely used and they perform well, which is more affordable than a roller cam. It would take some digging and some research, but you could look through a parts catalog of some of the more popular cam manufacturers and see if you can match up part numbers with something. Small Block Chevy Factory Camshafts . For as simple as this product appears, it is actually a very complicated piece of engineering if you study it closely. A camshaft is a rotating object in a vehicle with pointed cams in which its rotations produce reciprocal motion. If we didn't already know this was an LS cam, the first thing we would want to do is determine the engine [], it seems like you can barely write,you need education, I bought pair of cams for my 99 mustang 4.6 i was told they are stage 2 cams but i wanted to be sure before taking old ones off can u please help me identify them will they improve my pony thank u very much sir. side, aluminum1010617990350.LT5, ZR1, DOHC, 32-valve, drvs. Personally, I would trash the cam and go buy a new cam and lifter set that you know what the grind is. It's a 10168588 casting that had the numbers "4.3" cast on the side, too. I have a Street Performance comp cam that was purchased in 2007. On the shaft the #'s 1539 are stamped in one spot, and CWC is stamped in another spot. . The car has all orig drive train, Except for fuel injection and headers. 52.01.07 Grind numbers are HR 224/339. This type allows more direct airflow through the engine without having to deal with obstruction. However, most cams intended for street use are ground with several degrees of advance. If you are confused as to which cam you should buy for your beast, Crane has you covered. Learn how your comment data is processed. 210/218 at 0.551/0.556 at 113 degrees . 330864..68-84ovalOPEN396, 402, 366T, 427T, 454 Truck330865..68-84ovalOPEN396, 402, 366T, 427T, 454 Truck330866..68-78ovalOPEN366T, 427T330867..68-73ovalOPEN427T336765..68-78ovalOPEN427T336768..73-76ovalOPEN427T336781..73-85ovalOPEN454, 118cc chamber, 256/114cc ports343771..68-86ovalOPEN366T, 427T, 454343772..68-86ovalOPEN366T, 427T, 454343783..70-76ovalOPEN454 Truck346236..75-87ovalOPEN454, 120cc chamber, 225/116cc ports352625..70-76ovalOPEN454 Truck353049..73-84ovalOPEN454, 122cc chamber, 255/119cc ports366765..74-78ovalOPEN427T473328..68-69ovalOPEN366T3856206.65-66oval..CLOSED..396, 97cc chamber3856208.65rect..CLOSED..396/425hp, 109cc chamber 396/375hp "Z-16" Chevelle3856213.66-82oval..CLOSED..366T, 427T3856260.68oval..CLOSED..396 Truck3872702.65-66oval..CLOSED..396, 427, 98cc chamber3873858.65-67rect..CLOSED..396, 427, 109cc chamber3876875.77-85ovalOPEN427T3904390.67oval..CLOSED..396, 427, 98cc chamber3904391.67rect..CLOSED..396, 427, 107cc chamber3904392.67rect..CLOSED..427, Aluminum, L88, L89, 107cc chamber3904393.68-76ovalOPEN366T3908952.67ovalOPEN427, "M.Truck", Marine3909802.67oval..CLOSED..396, 427, 101cc chamber3917215.67-68oval..CLOSED..396, 427, 101cc chamber3917219.68-85ovalOPEN366T, 427T3919840.67-69rect..CLOSED..396, 427,107cc chamber3919842.68-69rect..CLOSED..396, 427, Aluminum L88, L89, 107cc chamber3931063.68-69oval..CLOSED..396, 402, 427, 101cc chamber3933148.69-84ovalOPEN'69 396/265hp, 366T, 427T, 112cc chamber3933149.68-76ovalOPEN427T, 122cc chamber3935401.68-76ovalOPEN427T3946074.69&71rectOPEN'69 427 L88, ZL1, Aluminum, 118cc chamber '71 454 LS6, "round exhaust port"3964290.69-70oval..CLOSED..396, 402, 427, 454, 101cc chamber Large or small hex spark plugs used3964291.69-72rect..CLOSED..396, 402, 427, 454, 109cc chamber, Large or small hex spark plugs used, crate motor usage in years after 1970.3965198.68-69oval..CLOSED..396 Truck3975950.68-70ovalOPEN396, 402 Truck, 366T, 427T3986133.68-85ovalOPEN366T, 427T, 454 Truck3986135.69-73ovalOPEN366T, 427T3986136.68-84ovalOPEN366T, 427T, 454 Truck3993820.71ovalOPEN402, 113cc chamber, 255/114 ports3993820.71-84ovalOPEN454 Passenger and Trucks, 113cc chamber, 255/114 ports3994026.71rectOPEN454 LS6, 118cc chamber3999241.72ovalOPEN402, 454, 113cc chamber, 6272292.70-78ovalOPEN402, 4546272990.70-uprectOPEN454 service replacement, used on some MKIV crate engines, 118cc chamber10045427..rect.Pontiac/Chevy Aluminum, 91cc chamber Large Port, race10049875..rect.Pontiac/Chevy Aluminum Small port, race10051128..rect.Bowtie, Aluminum 72cc chambers Symmetrical ports10051129..rect.Bowtie, Aluminum "raw" casting, Symmetrical ports10052902..ovalOPENMkIV, 427T1010114091-upoval..CLOSED..Gen.V 366T, 427T1011415691-upovalOPENGen.V & VI 454, 118cc chamber1014127996-upoval..CLOSED.."Vortec 7400", 100cc chambers1048705277-90ovalOPEN366T1236339196-upovalOPENBowtie, Aluminum, Signature Series, fits MKIV, Gen.V, Gen.VI, 110cc chamber1236340196-uprectOPENBowtie, Aluminum, Signature Series, fits MKIV, Gen.V, Gen.VI, 118cc chamber1255816201-upoval..CLOSED..Gen.VII,"Vortec 8100", 8.1L, 496, truck1256024198-upoval..CLOSED.."Vortec 7400", 100cc chambers1256293291-95ovalOPENGen.V, truck crate motor, 118cc chambers1256293391-95ovalOPENGen.V, 118cc chambers1256293400-uprectOPENGen.VI 502 Marine1401107769-uprectOPENAluminum, fits MKIV, "C-port" 118cc chamber, also sold as a "solid" head1404486184-96rect.Bowtie, Aluminum, MkIV, "raised runners", 1st design, 105cc chamber1404486196-uprect.Bowtie, Aluminum, Signature Series, fits MKIV, Gen.V, Gen.VI "raised runners", 2nd design, 115cc chamber1404486184-96rect.Bowtie, Aluminum, MkIV "raw" casting of "861" MKIV 1st design1408104578-87ovalOPEN4541408105285-87ovalOPEN366T, 427T, 454 Truck, Marked "HiPerf"1409235986-90ovalOPEN366T, 427T, Marked "HiPerf"1409236086-90ovalOPEN454 Truck, "peanut" round ports1409618870-71rectOPEN454 service replacement, also used on later Mark IV LS-6, LS-7 and 454 HO crate motors, 116cc chamber1409708891-uprectOPENGen.V 454/502 HO, 118cc chamber2450258597rect.Olds/Chevy, DRCE 2, Pro Stock aluminum, for blocks w/4.900" bore spacing2553440404rect.Olds/Chevy, DRCE 3, Pro Stock, aluminum, for blocks with 4.900" bore spacing, Oval includes both "peanut" (also called "round") ports and large oval ports, Copyright EngineRepairShop.com 2011-2023 Privacy Policy Disclaimer. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. motor could have casting number 10112391 or 10112391S that is the service replacement. Sept. 2019 Drag-Week Winner - N.Y. Legal Streeter - 1956 Chevy Bel-Air, http://www.msnusers.com/Chrisjunque/shoebox.msnw?action=ShowPhoto&PhotoID=2. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Analog system. On this cam card, you will see the LSA is 112 degrees. It is typically located in the center of the cam between the lobes. With over 35 years of experience in automotive machining, you will not find a more trustworthy and reliable source of parts. 2. It's for a 99-04 truck. There are at least 6 different versions as of 11/99. Also can i safely run the Xtreme Energy, XR294HR on my 383 Vortec 906 heads and screw studs ? * 54-55 all 6 cyl except PG, 58 D-D 2 nd design,59 series 3, 60-62 series 10-30,60-61 fleetmaster exc. 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. Crankshaft Identification Use these casting numbers to identify the crankshaft you have. The specs you have listed above for that 115835 part number is correct, the L/S is 109* instead of 110*. They include: Identifying with your eye. I hope it helps you identify the Chevrolet engine parts you are working on. 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. We have it in internal combustion engines and some electric motor speed controllers. They minimize friction, which ensures the camshaft contains more power. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. 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