There following are ways you can tell a difference: As the name implies, these sets of numbers reveal the model of the camshaft. Other examples include small block Chevys -12, big block Chevys -11, and 5.0L small block Fords -35. Crankshaft Identification Use these casting numbers to identify the crankshaft you have. In 1974, it was the cam for the 350/145hp, 185hp, 195hp; and 400/150hp, 180hp. Does Your License and Registration Address Have to Match? Any info helps, or where I can find. 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. 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. We found it under the heading of Xtreme RPM for LS1 lobes, Hi Lift. 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 it is an original GM part, these numbers will be there. A good understanding of these factors will assist you in making a wise decision. Small Block Crankshaft Casting Numbers Lookup Type your crankshaft casting number in the SEARCH BOX below. 139536 93B2B, I have a solid roller cam has cc 950 k5462 r6 292-5 296-6 stamped on front help with specs, I am just trying to decode the cam out of my 400m. The markings on end of cam is 300C6 and X6733. To avoid spinning, roller lifters are lifted together. Can you guys help me pick a cam and fix my combo? Only show this user. They include: Identifying with your eye. I have a Pontiac camshaft with 960938 number on the backside. Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. 4485B 4391B HR112+4 R (with a line under the R ) then CC and at the bottom G1979-14. 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. Now he serves as a regular contributor to OnAllCylinders. In 1971, it was the cam for the 307/200hp; 350/245hp, 270hp; and 400/255hp. The Vehicle's Service Parts Identification Label Will Have The VIN Digit and Engine RPO Code (Circled) To Confirm Engine Application Gen III LS Engine Car Applications 1997 to 2004 Corvette, 1998 to 2002 Camaro & Firebird, 2004 GTO: 5.7L LS1 2001-2004 Corvette, 2004-2005 Cadillac CTS-V: 5.7L LS6 Gen III LS Engine Truck Applications: Getting a camshaft can be a burden on many car owners; it works well when you have the right one. The 3709 lobe is listed as 265 degrees of advertised duration with 212 degrees at 0.050 and .328-inch lobe lift. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. 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. A Guide To Ford V8 Engine Block Casting Numbers, 1952-1996. I did a search as well, google and on here. Are you a newbie in dealing with cars and you seem not to know how useful a camshaft is and what is used for? Indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. Step 3 Match the number to a Chevrolet camshaft part number listing. 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. To be sincere, flat tappet just owns the name flat. A call to Comp at 1-800-999-0853 will probably give you some more details. You can basically find it in the center of the cam between the lobes. I was given a can that has the #s Cam is in used shape but with little to no wear. The 3709 lobe is listed as 265 degrees of advertised duration with 212 degrees at 0.050 and 0.328-inch lobe lift. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. A stamp is not a functioning part of a camshaft. Can You Register a Car with a Bill of Sale and No Title? We have a hint because if a camshaft if ground with no added advance, the intake lobe centerline will be the same number as the LSA114 degrees After Top Dead Center (ATDC). (See below.) 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. One of these cams looks unused and the other at best slightly used. Step 2 Find the profile or grind number. . Chevrolet "Stock" LS Camshaft. It's a 10168588 casting that had the numbers "4.3" cast on the side, too. Information is premium and can save you from errors and spending excessively. Step 1 Find the model prefix. But this comes at the cost of reduced torque in the middle of the rpm band. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Apr 13, 2014 Yeah, it has CR 760 stamped on the back, and then a date under it. Chevy V8 "W" Motor 348-409 Casting Numbers. Small Block Chevy Factory Camshafts . item 7 1957-1963 Corvette Camshaft GM 3736098 Solid Lifter 283 Sp Hi Perf 327/340 360hp 1957-1963 Corvette Camshaft GM 3736098 Solid Lifter 283 Sp Hi Perf 327/340 360hp. Only thing is the idle mixture screws have little effect (oh no timing pointer either on order) so cant really tell timing. [] Ask Away! CWC is the casting ID for CWC Textron. This is the number of crankshaft degrees of separation between the intake and exhaust lobe center lines. The duration at lash point in degrees (intake/exhaust) is 328/324; duration at .050" tappet lift (intake/exhaust) is 220/220; and . Chevy Intake Manifolds In 1975, it was the cam for the 350/145hp, 155hp, 165hp; and 400/175hp. To decipher these codes, we accessed COMPs website at compcams.com. Why are Volkswagen Oil Changes so Expensive? Then do the same process with the lobe at 0.050 on the closing side. i have a 383 chev engine ibought and would like to know what cam is in it. 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). They dont own the name flat, but the lobes of roller camshafts are perfectly flat. 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. ZL-1, Mark IV3946053.427.97-up4-bolt, Alum. In 1970, it was the cam for the 307/200hp; 350/250hp, 300hp; and 400/265hp. Camshafts come in a wide array of variations, and Chevrolet has a range of camshafts for different applications, engine sizes and performance specs. The next information engraved on the cam was HR 114. The engine also had smaller 1-1/8? 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. 2. 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. I have 3.55 geArs and a 3600 stall. They make castings for CMC (Camshaft Machine Corp.) and EPC (Engine Power Components) and others. SBC Block Casting Numbers. A SOHC allows at least 2 to 3 valves per cylinder configuration, with more manufacturer prowess. Any help much appreciated. Identifiers: Letter R, CWC, EP1, C4 and E8. The specs on that cam are: (read int lift, ehx lift, int duration, exh duration, rocker ratio). This is a job for professionals and the mechanically-inclined. In this case, we dont know what the opening and closing points are although you could compare the intake lobe points to an off-the-shelf XFI RPM Hi-Lift cam and probably be pretty close. With this intake lobe: 0.328 x 1.7 = 0.5576-inch, which COMProunds off to 0.558-inch. The engine needs to function by opening the valve with the help of the camshaft. the 4.3L LT1 was also referred to as the L99 (not to be confused with the LS variant bearing the same name) Stamped numbers are 529506 and 031531. 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. Match the number to a Chevrolet camshaft part number listing. This method requires you to do a few tasks like measuring some diameters and comparing them to the database. 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. 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. How Long Does it Take to Replace a Catalytic Converter? 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 . Any advice? side, aluminum1017439091-95350.LT5, ZR1, DOHC, 32-valve, pass. I can't help you in regards to who actually did the final grinding. journal.3.00" stroke3849847.283.forged..small journal.3.00" stroke3876764.283.forged or cast..sm. In 1970, it was the cam for the 307/200hp; 350/250hp, 300hp; and 400/265hp. exhaust valves. This was one of the best selling/most popular cams through the years past! The easiest way to tell the difference is to check the 8th digit of the Vehicle Identification Number (VIN) on the original vehicle. The LEA is an engine produced by General Motors for a wide variety of compact and midsize vehicles. Analog system. GM was looking for a more powerful engine for the CTS-V and ZL1 Camaros. 586 FM13 216 00L 1991 Z28 Engine: '94 355 LT1, GM hot cam, 1.6 RR's, Ported Heads, Dyno Don's headers, #30 SVO injectors, stock internals with skirted pistons. The Fora platform includes forum software by XenForo. Because the camshaft orchestrates the entire valve system, your Chevy won't run properly without it. A pushrod is a metal tube constructed to transfer the valve motion of a lifter riding on the camshaft directly to the value. Chevy Cam Part Number Location Chevrolet Big Block Camshaft Types Chevrolet installed Three different types of Camshafts on the Big Block Engines. I have this small block chevy the guy says is a 418 strocker a lifter lifted off at the track but now im looking at the cam and all it has on it is a S then another set of numbers is CH2 ..its a roller set up lifter ar comp cams and so is the rockers but i have no cam spec with car when i got it so im lost . The radiator, hoses, timing assembly, belts and fan will need to be removed to access the camshaft. It has a taper inside the lobe which ensures the lifter can spin. Thank you ,This has been very helpful. In 1973, it was the cam for the 307/115hp; 350/145hp, 175hp, 190hp; and 400/150hp. My 1968 Camaro Site. They appear to be a rock arms with a small diameter. side, aluminum1022512295350.LT5, ZR1, DOHC, 32-valve, pass. You need the measurement of the diameter to compare with the database or any online store IDs. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. Thanks, Mike. COMP Cams 12-600-4 Thumpr Cam, Small Block Chevy, 2000-5800 RPM. by Greenlight Mon Nov 10, 2014 6:56 pm. With your cam it might come out to somewhere between 114 to 110 degrees depending on if the cam was machined with advance. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. The numbers are just figures a manufacturer uses to identify their products and to track them sometimes. E Is there any way anyone could hp me out? At one time they supplied 85% of the blanks in the world. 366298.4Bowtie, Aluminum, billet main caps, 3.398" bore with sleeves, two piece rear main seal. The only thing we dont know from these number is the cams intake centerline. Your camshaft is important; your engine isnt meaningful without the contribution of the Camshaft. Step 2 Locate the ID number on the camshaft. It models the airflow for the computer to calculate fuel. (Advanced five degrees; use spring P/N 3970627.) Show More Show Less. 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. Understanding Cam Design. 4226 what kind of camshaft is it. Could someone help me identify these cam numbers ? 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. I'll post up a pic as well. 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. Thanks, Gary in N.Y. P.S. Carb number is stamped in this location as well as on an identification tag held on with one of the air . Chevy V8 Crankshaft Casting Numbers. 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.
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