I bought a 34 Ford pickup with a 302 installed. i have a 383 chev engine ibought and would like to know what cam is in it. Does OnStar Keep Location History? Indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. I have more than 4 Camaro's am I Addicted? We found it under the heading of Xtreme RPM for LS1 lobes, Hi Lift. Add the two numbers together and divide by 2. Chevrolet LS7 Camshaft. Thank you, if you can help, send me an e mail and I will send you a picture. GM 6930 , 6964 and 5054. Contact. A native of New Haven, Conn., Floyd Drake III began writing in 1984. They appear to be a rock arms with a small diameter. The numbers are just figures a manufacturer uses to identify their products and to track them sometimes. Small Block Casting numbers Use these casting numbers to identify the exhaust manifolds you have. We have it in internal combustion engines and some electric motor speed controllers. * 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. 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. The GM tube has the ID number as 3863151 which correlates to a L79 Cam however the stamping at the end is 920883. Switching to Synthetic Oil After 100k Miles: Pros and Cons. In 1975, it was the cam for the 350/145hp, 155hp, 165hp; and 400/175hp. Show More Show Less. GM Casting Numbers - Deves Technet.com Crane makes Blueprint camshafts for almost, if not, every GM, Ford, Mopar engine from the sixties and seventies. In 1971 he installed a 1965 Corvette fuel injection system. 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). Crower's cam specifications and printable cam card finder We investigated a couple of our Comp off-the-shelf LS cams and found they were ground with 5 degrees of advance, but that is no guarantee that your camshaft is ground that way. Now he serves as a regular contributor to OnAllCylinders. the 4.3L LT1 was also referred to as the L99 (not to be confused with the LS variant bearing the same name) Now turn the engine clockwise and stop at 0.050 on the opening side of max lift and record the degree wheel reading. And there is a CR inscribed as well off the lower left Below is some reference data for cylinder head casting numbers with valve sizes, years used, etc. by Greenlight Mon Nov 10, 2014 6:56 pm. A call to Comp at 1-800-999-0853 will probably give you some more details. Chevy Intake Manifolds They provide average torque to the valves. ZL-1, 2nd version, Mark IV3955270.427.692 or 4 bolt3955272.396.692 or 4 bolt3955274.366T68-854-bolt3955276.427T68-734-bolt3963512.427.692 or 4 bolt3963512.454.70-762 or 4 bolt3969852.366T68-844-bolt3969854.396.692 or 4 bolt3969854.402.70-722 or 4 bolt3969858.427T68-844-bolt3999289.454.71-792 or 4 bolt, some "CE" replacement blocks had four bolt main caps3999290.396.68-692 or 4 bolt, Truck3999290.402.70-722 or 4 bolt, Truck3999290.402.722 or 4 bolt, Passenger3999293.366T68-904-bolt3999294.427T68-844-bolt100511074544-bolt, Bowtie, MkIV, 9.8" deck, siamesed bores, 4.25" semi-finished bores, can be bored to 4.50"10069282366T90-914-bolt, Mark IV, Tall deck10069284427T..4-bolt, Mark IV, Tall deck10069286454.90-914-bolt, Mark IV, Short deck10114182454.91-up4-bolt, Gen.V10114183366T91-up4-bolt, Gen.V10114184427T91-up4-bolt, Gen.V10134366454T..4-bolt, Bowtie, Gen.V, Tall deck101850504544-bolt, Bowtie, Gen.V, Short deck10237297454.96-up4-bolt, Vortec 7400", "L-29" Gen.VI10237299427T96-up4-bolt, Gen.VI, 7.0L, truck10237300502.96-up4-bolt, Gen.VI, 4.466" bore12550312427T96-up4-bolt, Gen.VI, 4.250" bore, fuel pump boss, clutch linkage pivot boss12550313454.91-up4-bolt, Gen.V crate motor, Gen. VI 4.25" bare block, fuel pump boss12556110496.01-up4-bolt, Gen.VII 8.1L, "Vortec 8100", Truck12561357454.96-up4-bolt, Gen.VI125613585024-bolt, Gen. VI14015443454.87-902 or 4-bolt, Mark IV, Truck, Motorhome14015445454.78-902 or 4 bolt14044807454T..4-bolt, Bowtie, MkIV, CNC prep, Tall deck, 4.25" bore or 4.495" bores, 191659554541996-2001 L29140968595024-bolt, Gen.V, HO245025044544-bolt, Bowtie, Gen.V, Race prep, 9.8 "short" deck height24502506454T..4-bolt, Bowtie, Gen.V, Race prep, 10.2 "tall" deck height245025724-bolt, 4.5" bore Olds DRCE 2, 9.5" deck height255344024-bolt, 4.590" bore Olds DRCE 3, 9.25" deck height. Show entries Search: Showing 1 to 10 of 46 entries Previous Next Big Block Crankshaft Casting Numbers Lookup 4. Each code will be represented by the SES light flashing, pausing Required fields are marked *. At one time they supplied 85% of the blanks in the world. 4485B 4391B HR112+4 R (with a line under the R ) then CC and at the bottom G1979-14. In 1971, it was the cam for the 307/200hp; 350/245hp, 270hp; and 400/255hp. (Yes or No). **Due to the COVID-19 pandemic a large number of products are on backorder and shipping times are longer then usual. The 3709 lobe is listed as 265 degrees of advertised duration with 212 degrees at 0.050 and 0.328-inch lobe lift. JAMSI is a trusted source of automotive engine parts. The markings on end of cam is 300C6 and X6733. Do not enter the -2 on dual cams part numbers or the (I) that indicates intake or (E) for exhaust. The "2182" Casting number identifies this camshaft as GM part number 3972182. Technical Articles - SBC Block Casting Numbers - Bzerob.com 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. 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 ? 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. GM used a forged crankshaft, oil-spray cooled Hypereutectic pistons, and a hydraulic roller camshaft made to handle boost. The 7661-11 is a serial number specific to that camshaft only. Only show this user. The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for. Camshaft Identification help | NastyZ28.com In 1975, it was the cam for the 350/145hp, 155hp, 165hp; and 400/175hp. Analog system. . The 8th digit of the VIN. Camshaft Guide for Small-Block Chevys: How-To, Tips & Techniques VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. GEN III vs GEN IV. In 1971, it was the cam for the 307/200hp; 350/245hp, 270hp; and 400/255hp. 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. No smoke, but I have not checked compression yet. On other cams Ive looked at, they just list the part number which is easy to look up, but this cam has a bunch of numbers I dont recognize. A good understanding of these factors will assist you in making a wise decision. Oct 8, 2010 #2 Z z28rod Veteran Member Apr 30, 2009 4,472 hopewell junction,ny Small Block Factory Cams PG,63 4WD 1st series. Locate the ID number on the camshaft. They include: Identifying with your eye. Can You Register a Car in a Different Name than on the Title? The EP1 (not EPI) indicates that it was cast for Engine Power Components. The car has all orig drive train, Except for fuel injection and headers. It models the airflow for the computer to calculate fuel. Quick View. Each number has a meaning and an interpretation. Answer (1 of 4): Most common specs for an engine would be for example. 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. It's real easy to spot if the heads are off because of the small 3.74" bore. diameter Also there is a Blue dot just under the distributor drive gear. These markings will usually be in the center of the camshaft, obviously in between the valve lobes. This is the number of crankshaft degrees of separation between the intake and exhaust lobe center lines. Cam Identification? | LS1LT1 Forum Camshaft Specifications and Terminology - Speedway Motors They are widely used and they perform well, which is more affordable than a roller cam. But this comes at the cost of reduced torque in the middle of the rpm band. Camshafts: GM Performance Motor 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. PERFORMANCE PARTS | My great WordPress blog. 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. The Chevy part number for that cam is 3896929. I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too. Discussion in 'The Hokey Ass Message Board' started by indestructableforce, Nov 13, 2012. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. (396 BBC), Is this enough information to get the specs on this cam? It helps you know the compatibility of the camshaft to the supposed vehicle you want to use it for. The LS . Hope weve helped you with a little more camshaft knowledge. The Fora platform includes forum software by XenForo. 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. CHEVY BIG BLOCK V-8 Crankshaft Casting Numbers BBC TWO PIECE REAR MAIN OIL SEALS 3.76" STROKE used on '65-'90 Mark IV 366T, 396, 402, 427 or 427T 6223396,402,427.forged, 1053 steel 7115396,402,427.forged, nitrided, cross-drilled, 5140 steel 3804816..396,402,427.cast 3856223..396.forged 3863114..402. On the shaft the #'s 1539 are stamped in one spot, and CWC is stamped in another spot. If we didnt already know this was an LS cam, the first thing we would want to do is determine the engine family. (See below.) Camshaft Identification - LS1TECH - Camaro and Firebird Forum Discussion SBC Block Casting Numbers. Differences and Applications of GM ECMs (GEN III, IV, & V) One of the primary differences between the GM GEN 3 and 4 ECMs are how they estimate airflow using VE Tables. Quick View. The 4 digit ID on the camshaft core is 1529, which if correct I believe is for a 327 engine. There are other camshafts that can be viewed in this category, they include: SOHC means simple overhead cam. This hydraulic flat tappet "454" is a good street high-performance and marine cam used in the Gen V 454 H.O. Your email address will not be published. side, aluminum1023990296-up350.Gen.II LT4, aluminum, reverse flow cooling, 195cc port, 54.4cc chamber, angle plug1023990696-up350."Vortec 5700", "L31", 64cc chamber, 170cc intake port, 1.94"/1.5" valves1236771299-up."Fast Burn", aluminum, 210cc intake,port, 2.00/1.55 valves, 62cc chamber1236771399-up."Fast Burn" used on ZZ430 crate motor, aluminum, 210cc intake port, 2.00/1.55 valves, 62cc chamber124800052000..LS1 "GTZ", aluminum, 38cc, 2.125"/1.625" valves, angle plug1248001197-up.Bowtie "SB2.2", aluminum, 2nd version of "SB2", 48cc chambers, "mirror ports", revised valve angles & plug location1250645087-953501250985987-943051251685287-953501252974295-96265.Gen.II, "L99", cast iron1255156196350.Gen.II, "LT1", aluminum1255252097-up305.Vortec, truck1255429094-96350.Gen.II, "LT1", cast iron version, used on "9C1" Police package, Impala SS, Cadillac Fleetwood, Buick Roadmaster reverse flow cooling1255429195-96265.Gen.II, "L99", cast iron1255569096350.Gen.II, "LT4", aluminum1255674399325.Gen.III, 5.3L, aluminum, truck, van1255805997305.Vortec, truck, 1.84"/1.5" valves1255806298350.L31 Vortec, truck, 64cc chambers, 1.94/1.5, 170cc intake port1255880697-98350.Gen.III, "LS1", aluminum, 68cc1255985399-up350.Gen.III, "LS1", aluminum, 68cc1255986299-00.Gen.III, aluminum 4.8/5.3L1255989500-up325.Gen.III, aluminum, Vortec 5.3L1256170601-04.Gen.III, 5.3L, aluminum1256187399-01364.Gen.III, 71cc, iron1256231701-04364.Gen.III, 71cc, aluminum1256424100-up350.Gen.III, "LS1", aluminum, 68cc1256424301-up350/364Gen.III, "LS6", "LS2", aluminum1257203501-04364.Gen.III, 6.0L, aluminum, 71cc1400885679-812671401020182-8530514011034Bowtie, cast iron, 64cc chambers, 184cc port volume, angle plug, "Phase II" head14011049Bowtie, aluminum, 55cc chambers, angle plug, 180cc ports, "Phase 6"1401108355-86350.Crate motor for years indicated. Can You Register a Car with a Bill of Sale and No Title? 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. Knowing the measurement of a lobe separation angle is another special way of telling the difference between camshafts. Inc. Lee's Summit MO. I only put the numbers here that I can prove, so this is a short list. It means the valve is open at 255 degrees. Part Number: Type: DUR @ .050" Lift: C/R: LSA: Usage: 14093643: Hyd. 1991 and later Gen.V, VI and VII production BBC motors have one-piece rear main crank seals. I did a search as well, google and on here. Camshafts are stamped by the manufacturers as a means of identification. I have verified this information with a degree wheel and a dial indicator, 300 degrees @ 0.006 lift, 250 degrees @ 0.050 lift, lift is 0.266 or 0.399 at valve, and LSA of 11.5. Understanding Cam Design. Information is premium and can save you from errors and spending excessively. To decipher these codes, we accessed COMPs website at compcams.com. In this case: 108 + 116 = 224 degrees / 2 = 112 degrees. 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 . 2. Camshafts are identified by (usually) the last 4 digits of the part number and a casting symbol. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. Then do the same process with the lobe at 0.050 on the closing side. For online resources, check out NastyZ28.com, Kendrick-Auto.com or Chevy-Camaro.com which have detailed listings, or contact a Chevrolet parts department to identify the camshaft. All of these applications had the same specs as the initial 1967 application. Example: 63402A-2 enter 63402A The only stamped markings on the front are 951758. cam 5054 i am still searching for "Three Rules of Work: Out of clutter find simplicity; From discord find harmony; In the middle of . Stamped on end is Z099, also has three pink dots above that stamping. Crane Cams' Muscle Car Camshaft Guide - EngineLabs 1954-1955 235 Engine 3835913; 1956-1962 235 Engine 3836848; 1956-1962 261 Engine 3836850 COMP Cams 12-600-4 Thumpr Cam, Small Block Chevy, 2000-5800 RPM. That gives us our first clue where to look for the rest of the numbers. 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. Check this castingcarefully to determine which features it may have. I hope it helps you identify the Chevrolet engine parts you are working on. *54-55 passenger W/PG, 56-58 passenger. The easiest way to get the best is to check the numbers in between the lobes or boxes. If the number was 110 degrees, this would increase the amount of overlap. Their outer look tells the difference. 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. They minimize friction, which ensures the camshaft contains more power. On this cam card, you will see the LSA is 112 degrees. How to Identify an LS Engine - OnAllCylinders In 1969, it was the cam for the 307/200hp; 327/210hp, 235hp; and 350/250hp, 255hp, 300hp. 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 camshaft identification help???? | Pirate 4x4 Why are Volkswagen Oil Changes so Expensive? no idea) and only pulls about 10psi vac at idle. The grind number is the ever noted number, far and more recognized than the model number. 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. While these engines were based on the GM Family II engine, the architecture was substantially re-engineered for the new Ecotec application produced since 2000. For instance, the number for a Toyota 3SGE would be CS 3SGE. There are 3 different ways to select your camshaft tightly. Looks to have stock cast iron heads and exhaust. E.g. Ford Au part no ! In the catalog, you will see the cams listed by configuration starting with flat tappet hydraulics and then hydraulic rollerswhich is what we want. I dont have any numbers. Casting numbers used on factory 366ci tall deck engines (some used on multiple engines): *ending 328: 1980 through 1991. 285/300hp, 64cc chambers, 1.94"/1.5" valves1401441580-85267/3051401441680-86305.1.84"/1.5" valves, 58cc chambers1401444080305.1.84"/1.5" valves1401982180-863501401992479-812671401992680-863501401051680-86350140205178035014020555813051402055681350140220568535014022206803501402230180-863051402260180-86267/3051.72"/1.5" or 1.84"/1.5" valves, 53cc chambers1402280180-8630514024816..350.76cc chambers, 1.94/1.5 valves, Gen.I crate motors1403480678-822671403480778-863051403480880-863501403480896-up350.76cc chambers, 1.94"/1.5" valves, Gen.I Goodwrench crate motors1403481080-86350.Truck1403481180-86350.Truck1403912181-86305.Truck1403912281-86305.Truck1407111480-863501407538180-86350.Truck14079261863501408584480-86350.Truck140859638635014088526..350.Gen.II, LT1, aluminum1408911986-883501409409386-883501409621780-96350.Crate motor, 285hp/300hp, 64cc chambers, 72' or 90' center intake manifold bolt angles1410108187-953051410108387-up350.Gen.I, also used on crate motors, 285 or 300 hp, 64cc chambers, 72' center manifold bolt angles1410112886-87350.Aluminum, 58cc, angle plug1410218787-91305.1.84"/1.5" valves1410219187-up3501410219387-up350.1.94"/1.5" valves22542525Dart/Olds/Chevy aluminum, 14'or 17' race head.2450255996-97.Bowtie, "SB2", 1st version, "mirror ports", aluminum, 196cc port, CNC version 280cc port, 38cc chamber25500141Buick/Chevy aluminum, 10' race head, 42cc chambers, symmetrical ports, 235cc intake port volumes, 2.1"/1.625" valves25534351C..04-up.Gen.I Bowtie, cast iron Vortec head, 175/65cc ports, 2.00/1.55 valves, "small port head"25534371C..04-up.Gen.I Bowtie, cast iron Vortec head, 206/77cc ports, 2.00/1.55 valves, "large port head"3341736990-up350.Gen.I Goodwrench crate motor,"Hecho en Mexico", 76cc, 0-3267114-bolt, Alum., CanAm, 4.44" bores, steel cylinder liners340220..427T68-854-bolt345014..454.70-86346236..454.75-762-bolt359070..454.70-90361959..454.73-902 or 4 bolt364776..427T68-854-bolt364779..366T68-904-bolt399204..509.70-714-bolt, Alum., CanAm, 4.5" bores, steel Cylinder liners399293..366T77-784-bolt473478..427T77-904-bolt495102..4-bolt, Alum., CanAm, 4.5" bores3782870.427T68-764-bolt3824553.366T66-674-bolt3855961.396.65-662 or 4 bolt3855961.427.662-bolt3855962.396.65-664-bolt3855977.366T66-734-bolt3869942.427.66-672 or 4 bolt3902406.396.672 or 4 bolt3904351.427.672 or 4 bolt3904354.366T66-764-bolt3916319.366T684-bolt3916321.427.682 or 4 bolt3916323.396.682 or 4 bolt3925521.427T68-854-bolt3935439.427.68-692 or 4 bolt3935440.396.68-692 or 4 bolt3937724.366T68-854-bolt3937726.427T68-844-bolt3946052.427.694-bolt, Alum. This method requires you to do a few tasks like measuring some diameters and comparing them to the database. They are not flat, and they are recognized with a slight crown on the face. Canadian made ERTEL brand. It doesnt add to the function of the camshaft, nor does it play an important role. There are two easy ways: 1. That particular cam put my son's pump-gas 406" SB Chevelle to an 11.80 E.T. Getting a camshaft can be a burden on many car owners; it works well when you have the right one. 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. Can you guys help me pick a cam and fix my combo? Is there any way anyone could hp me out? engine P/N 10185058. Small Block Chevy Factory Camshafts . The recall affects several models of heavy duty Chevrolet Silverados and GMC Sierras with optional engine block heaters. 4009f/4024f 68553-06. . That number is actually the casting number of the camshaft, not the part number. Stamp numbers are engraved by the manufacturers to monitor production and distribution. It has a taper inside the lobe which ensures the lifter can spin. I have a fessler roller cam trying to identify the grind specs. For instance, if you have numbers like 266H04, the last two digits are the numbers used to show the measurement of the lobes. The identification number consists of a seven-to-eight digit code. Personally, I would trash the cam and go buy a new cam and lifter set that you know what the grind is.
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