gm camshaft identification numbers

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The easiest way to get the best is to check the numbers in between the lobes or boxes. (Yes or No). The GM tube has the ID number as 3863151 which correlates to a L79 Cam however the stamping at the end is 920883. Good Day: Quick View. I have a cam trying to set startup timeing hr112 intake hyd .555 ext .576 duration .006 valve tapping lift 287 in 293 ex valve timing .050 open int 10 close btdc46 abdc exh :57 BBdc 5 ATC. 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. p/n 12560967, .466/.457, 191/190, 114 LSA. The next two numbers are the valve lift of . I have a new cam was told it was a comp cam # 1136 230780 any ideas on cam specks. There following are ways you can tell a difference: As the name implies, these sets of numbers reveal the model of the camshaft. How Long Does it Take Transmission Fluid to Circulate? journal3.00" stroke3951130.327.forged..medium journal3.25" stroke3951529.400.cast.large journal.3.75" stroke, 10168568265.cast.medium journal3.00" stroke12552215364.cast.medium journal3.62" stroke, Gen. III, 6.0L12552216325,350,364.cast.medium journal3.62" stroke, Gen. III 5.7L LS1, 5.3L, 6.0L12553312293.cast.medium journal, 3.27" stroke, Gen. III, 4.8L12553482293.cast.medium journal, 3.27" stroke, Gen. III, 4.8L14088526305,350cast.medium journal3.48" stroke14088532350.forged..medium journal3.48" stroke14088535305,350cast.medium journal3.48" stroke14088552350.forged..medium journal3.48" strokeZR1, "LT5", 350 DOHC, 10106122350.forged..large 2.76" journal3.66"stroke, BBC TWO PIECE REAR MAIN OIL SEALS 3.76" STROKE used on '65-'90 Mark IV 366T, 396, 402, 427 or 427T, 6223.396,402,427forged, 1053 steel 7115.396,402,427forged, nitrided, cross-drilled, 5140 steel3804816.396,402,427cast3856223.396forged3863114.4023863144.396,4023874874.396,4023879621.427forged3882841.396forged, cross drilled, nitrided3882842.427forged, cross drilled, nitrided3882847.3882848.3882849.427forged3887114.396forged, nitrided, 5140 steel3904815.396,402cast, nodular iron3941180.3942411.3965746.semi finished, forged3993804.raw, 5140 steel, BBC ONE PIECE REAR MAIN OIL SEAL 3.76" STROKE used on '91-up Gen.V and Gen. VI 366T, 427T, 10114186427Tforged, 1053 steel10114187366Tcast10114189427Tcast, TWO PIECE REAR MAIN OIL SEALS 4.00" STROKE used on '70-90 Mark IV 454 or Mark IV 502, 3520.454forged, cross-drilled, 1053 steel3521.454, 502forged, cross-drilled, 5140 steel3524.454forged7416.454, 502forged, cross-drilled, 1053 steel7463.454forged336782..454cast353039..454cast353638..454359730..4543962523.454forged3963523.4543963524.454forged3967416.454forged3967463.454forged3975945.4543963521.454forged, cross drilled, 5140 steel3965753.semi finished, forged, 5140 steel3975495.4543993878.454forged10051169454forged raw casting, ONE PIECE REAR MAIN OIL SEAL 4.00" STROKE used on '91-up Gen.V and VI 454 or 502, 10114188454cast14097044454,502..forged, 1053 steel, 3732692348forged3.25" stroke3733223348forged3.25" stroke3733226348forged3.25" stroke3741640348forged3.25" stroke3741642348forged3.25" stroke3788072409forged3.50" stroke3795589409forged3.50" stroke3824553348forged3.25" stroke3829027409forged3.50" stroke, 3837466409,427 "Z11"forged3.65" stroke3838416409forged3.50" stroke, CASTING#..SIZEYEARMAIN CAP BOLTS.NOTES, 140029..35080-842330817..40072-802355909..262..75.2355909..30576-792360851..26275-762Monza V-8361979..30577-792 or 4, some Canadian assembled heavy duty blocks have 4-bolt main caps, 366245..35078-794Bowtie366286.4Bowtie, siamesed, straight nodular iron main caps, 2-piece seal, 4.00-4.150" bores, 2.45" main journals. i have a 383 chev engine ibought and would like to know what cam is in it. GM was looking for a more powerful engine for the CTS-V and ZL1 Camaros. Stamped numbers are 529506 and 031531. For as simple as this product appears, it is actually a very complicated piece of engineering if you study it closely. cam 5054 i am still searching for "Three Rules of Work: Out of clutter find simplicity; From discord find harmony; In the middle of . 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. Now he serves as a regular contributor to OnAllCylinders. The LS engine is designated 54 and this number is generally the first two numbers that define the actual cam part number. Re: camshaft identification. Used on RPO: L86 (1980-1991). This an original 1966 283 camshaft casting number is 3732798, hydraulic lifters. I purchased a used hydraulic roller camshaft from a friend that was originally used in an LS1 engine. The easiest way to tell the difference is to check the 8th digit of the Vehicle Identification Number (VIN) on the original vehicle. You need the best camshaft that works well with your vehicle. CWC is the casting ID for CWC Textron. How to Get a California Drivers License with an Out of State License, Can You Register a Car Online in Florida? GEN III vs GEN IV. Can a Bad Battery Cause a Check Engine Light to Come On? His work has appeared in the "New Haven Register," Medford's "Mail-Tribune" and the "Ashland Daily Tidings." Now turn the engine clockwise and stop at 0.050 on the opening side of max lift and record the degree wheel reading. Hey Keith, we did some quick sleuthing and your cam MAY be for a BBC Marine (boat) motor application thats been discontinued. I suspect 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. 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. It's a used cam and it has this barcode on it. How to Catch Someone Putting Nails in Your Tires (5 Best Ways), Method 2: You can Identify with Stamp Numbers, what to do after replacing your camshaft sensor in your car. With over 35 years of experience in automotive machining, you will not find a more trustworthy and reliable source of parts. Thank you in advance, Gday mate trying to decipher this comp cam to no avail, # 2-018b 1295 3106-rb 046987 any help on duration and lift lobe centre and rev range would be greatly appreciated. So why did this cam not have a lope to it in the 283, from everything I am reading long . Terms of Service. Add the two numbers together and divide by 2. Small Block Casting numbers Use these casting numbers to identify the exhaust manifolds you have. After working as a reporter in Oregon, he is now based back home in New Haven. Small Block Chevy Factory Camshafts . There are at least 6 different versions as of 11/99. 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. A stamp is not a functioning part of a camshaft. I have Comp Cams camshaft. My buddy says its a mild cam thats bigger than a stock LS6 version, but he didnt have any more information. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. diameter CAM 6930 1967 CAMSHAFT ID. The prefix consists of five digits and explains the date and the location of the Chevy's manufacture. Car AC Compressor Not Turning On (Causes and Quick Fix). News Chevrolet Performance Releases The Impressive L8T As A Crate Engine . Learn how your comment data is processed. For instance, the number for a Toyota 3SGE would be CS 3SGE. Below is some reference data for cylinder head casting numbers with valve sizes, years used, etc. Hey. Anyone have any idea what make and specs are of this cam? Looks to have stock cast iron heads and exhaust. 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. To obtain specifications on a Crower cam please enter the part number (00242, 15210, etc) or custom work order number (E23456, A7890, etc) located on the end of the camshaft. (Yes or No). Thank you ,This has been very helpful. 1995 Chevrolet C1500 5.7L - obd1 - service engine code 32 - replaced map sensor and cleared codes but continues to throw code that map sensor has low voltage. 1991 and later Gen.V, VI and VII production BBC motors have one-piece rear main crank seals. Displacing 2.4 liters in an inline-four configuration, the LEA is part of the Ecotec engine. The Fora platform includes forum software by XenForo. can you help me to decode this cam . All of these applications had the same specs as the initial 1967 application. 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. 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. (Advanced five degrees; use spring P/N 3970627.) Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! By visual inspection. My 1968 Camaro Site. They provide average torque to the valves. A roller camshaft has its wheel attached to the bottom of the lifters body. 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. Trying to find the specs on this camshaft. The car has all orig drive train, Except for fuel injection and headers. COMP Cams 12-600-4 Thumpr Cam, Small Block Chevy, 2000-5800 RPM. Small Block Crankshaft Casting Numbers Lookup Type your crankshaft casting number in the SEARCH BOX below. If you have ever heard that the new style 235 gets better compression numbers with an "848" Head, look for the last three numbers of that Casting Number. Thanks, Mike. We would like to thank everyone that has contributed to the data provided on this site. The cam is in very good used condition and will likely be reused. GM is recalling seven. A SOHC allows at least 2 to 3 valves per cylinder configuration, with more manufacturer prowess. 4009f/4024f 68553-06. How does this compare to the 69 dz 30/30/ cam? by Greenlight Mon Nov 10, 2014 6:56 pm. Could someone help me identify these cam numbers ? They appear to be a rock arms with a small diameter. There are 3 different ways to select your camshaft tightly. Indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. (See below.) How Long Does it Take to Replace a Catalytic Converter? These numbers only describe the functions or tell the specifics of each product. This hydraulic flat tappet "454" is a good street high-performance and marine cam used in the Gen V 454 H.O. Chevy V8 SBC Block and Head Casting Numbers. side, aluminum1017439091-95350.LT5, ZR1, DOHC, 32-valve, pass. 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. Reading a Cam Card: Advance Thanks, Gary in N.Y. P.S. Can I Drive my Mercedes With Check Engine Light On? Part Number: Type: DUR @ .050" Lift: C/R: LSA: Usage: 14093643: Hyd. no idea) and only pulls about 10psi vac at idle. Drake studied journalism at Southern Connecticut State University. Now zero the indicator and turn the engine backward until the dial indicator reads roughly 0.100-inch. Some enthusiasts just compare the opening and closing points of the intake with the cam card but this isnt as reliable as the intake centerline method. The Chevy part number for that cam is 3896929. I dont have any numbers. That number is actually the casting number of the camshaft, not the part number. In 1975, it was the cam for the 350/145hp, 155hp, 165hp; and 400/175hp. Thank you, if you can help, send me an e mail and I will send you a picture. For a better experience, please enable JavaScript in your browser before proceeding. You can basically find it in the center of the cam between the lobes. The recall affects several models of heavy duty Chevrolet Silverados and GMC Sierras with optional engine block heaters. Chevy V8 "W" Motor 348-409 Casting Numbers. Step 2 Find the profile or grind number. Also there is a Blue dot just under the distributor drive gear. For the intake centerline method, once the cam is installed and TDC is established on the degree wheel, then roll the cam around until the dial indicator signals maximum lift. I have gone though the list of things to look for on the CC cam that came with a motor I picked up, but have not had much luck, so Im asking Jeff to have a look. It means the valve is open at 255 degrees. The suffix provides the. Despite the differences, however, an 8.1L camshaft will drop right into a 454 like it belongs there - but it will only run four cylinders. For instance, if you have numbers like 266H04, the last two digits are the numbers used to show the measurement of the lobes. Stock GM LS engine cams feature LSA anywhere from 116 to 121 degrees because GM is concerned with creating a very smooth idle. The only thing we dont know from these number is the cams intake centerline. My grandfather was one of their 1st employees when they started out as Cambell, Wyant, and Cannon back in the early 1900s. They include: Identifying with your eye. On the home page, we looked for the Information tab and then clicked on Catalogs. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. exhaust valves. Hope weve helped you with a little more camshaft knowledge. Every engine needs a timing device that can control the opening and closing of the intake and exhaust valves. A good camshaft cannot be underrated, so you need it to make your engine function well. The car came with the two cams you identified above, Stored in cardboard tubes, With the #5054 & date 1971 stamped on tubes. Which cam are you refering to that helped your son achieve 11.80? Thank, Ray. i have removed camshaft welsh plug to see numberbut cant identify numbers help would be appricated.i nee to see what size converter i would need. COMPCams uses two-number designations for all its engine families. However, remember what to do after replacing your camshaft sensor in your car to avoid another frustration. Any advice? When referring to LSAs, the larger the number, the more degrees of separation between the intake and exhaust lobes. 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. Only thing is the idle mixture screws have little effect (oh no timing pointer either on order) so cant really tell timing. JavaScript is disabled. i have a hr8ty 3050s/305is y7379 cc 212203 2811 out of a 1999 360 dodge magnum i cannot get any info on lift duration or center line also has cc letters asume comp cam ? * 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. DOHC is a production to improve the volumetric of the internal combustion engine in which it has more power than a simple overhead cam. These markings will usually be in the center of the camshaft, obviously in between the valve lobes. Can I Sell a Car if the Title is not in my Name? i have a 383 chev engine ibought and would like to know what cam is in it. There are other camshafts that can be viewed in this category, they include: SOHC means simple overhead cam. however, depending on how you want to look at it. The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for. To avoid spinning, roller lifters are lifted together. Each number has a meaning and an interpretation. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. View (5) $203.95 More Info. In this case: 108 + 116 = 224 degrees / 2 = 112 degrees. Switching to Synthetic Oil After 100k Miles: Pros and Cons. 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. This figure is derived by adding the intake center line plus the exhaust center line and dividing by two. A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. It doesn't indicate a different cam or an earlier or later version. 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 2011-2023 Privacy Policy Disclaimer. Thanks, Your email address will not be published. Knowing the measurement of a lobe separation angle is another special way of telling the difference between camshafts.

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