gm camshaft identification numbers

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. The 3709 lobe is listed as 265 degrees of advertised duration with 212 degrees at 0.050 and .328-inch lobe lift. cam 5054 i am still searching for "Three Rules of Work: Out of clutter find simplicity; From discord find harmony; In the middle of . Other examples include small block Chevys -12, big block Chevys -11, and 5.0L small block Fords -35. I suspect you have . the 4.3L LT1 was also referred to as the L99 (not to be confused with the LS variant bearing the same name) There are 3 different ways to select your camshaft tightly. Its got a great loping idle (big cam?? On the home page, we looked for the Information tab and then clicked on Catalogs. The specs on that cam are: (read int lift, ehx lift, int duration, exh duration, rocker ratio). I have Comp Cams camshaft. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. The Chevy part number for that cam is 3896929. Below is some reference data for cylinder head casting numbers with valve sizes, years used, etc. Drake studied journalism at Southern Connecticut State University. 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. Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! Camshafts are identified by (usually) the last 4 digits of the part number and a casting symbol. The end of the cam is stamped 3709/3711 HR 114 followed by CC and 7661-11. In 1998, head c/n 24575507 arrived with a heart-shaped combustion chamber against a D shape. They minimize friction, which ensures the camshaft contains more power. 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. I just rebuilt the carb as it was pretty dirty and leaked at the accel pump. I tried searching & googling these markings with no luck. Only thing is the idle mixture screws have little effect (oh no timing pointer either on order) so cant really tell timing. As each engine model comes with a specific camshaft, proper identification is key to finding the right one. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. This will give you the intake centerline. If you notice any mistakes or have any additions, use my contact me form and let me know so I can update the list. On this cam card, you will see the LSA is 112 degrees. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. The pushrods cam stays above the cylinder, which is always above the combustion chamber. 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. Remove the camshaft from the engine if necessary. How Long Does it Take Transmission Fluid to Circulate? A stamp is not a functioning part of a camshaft. The 3709/3711 numbers are references to lobe designs. 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. To avoid spinning, roller lifters are lifted together. In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. Can Jumpstarting a Car Damage the Alternator? 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. For instance, if you have numbers like 266H04, the last two digits are the numbers used to show the measurement of the lobes. It's a 10168588 casting that had the numbers "4.3" cast on the side, too. Retired GM employee, John Hinckley, an NCRS Master Judge, explains the one number . My 1968 Camaro Site. (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. The markings on end of cam is 300C6 and X6733. The specs you have listed above for that 115835 part number is correct, the L/S is 109* instead of 110*. *54-55 passenger W/PG, 56-58 passenger. The first three-digit number shows the average duration time of the lobes. That gives us our first clue where to look for the rest of the numbers. DOHC is a production to improve the volumetric of the internal combustion engine in which it has more power than a simple overhead cam. Stamped numbers are 529506 and 031531. These markings will usually be in the center of the camshaft, obviously in between the valve lobes. i have a 383 chev engine ibought and would like to know what cam is in it. So why did this cam not have a lope to it in the 283, from everything I am reading long . Identifiers: Letter R, CWC, EP1, C4 and E8. How Long to Drive After Reset Computer to Pass Emission Test? Different chamber volumes, port volumes, port locations, valve sizes, etc. I have no idea whats on the inside. Drivetrain: '95 T56, pro 5.0 shifter, hayes clutch, Stock 10 bolt with 3.42's In the catalog, you will see the cams listed by configuration starting with flat tappet hydraulics and then hydraulic rollerswhich is what we want. The easiest way to tell the difference is to check the 8th digit of the Vehicle Identification Number (VIN) on the original vehicle. (Yes or No). Each number has a meaning and an interpretation. 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. I'll post up a pic as well. Inc. Lee's Summit MO. Crankshaft Identification Use these casting numbers to identify the crankshaft you have. They provide average torque to the valves. 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: If you happen to misplace your card, most cam companies now list all off-the-shelf cam cards on their website that you can easily print out. Any help much appreciated. 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. Camshafts are stamped by the manufacturers as a means of identification. Can a Wheel Speed Sensor Cause Limp Mode? The GM tube has the ID number as 3863151 which correlates to a L79 Cam however the stamping at the end is 920883. Ford Au part no ! Speed isnt a problem with a dual camshaft and it increases the engines power. 4226 what kind of camshaft is it. Looks to have stock cast iron heads and exhaust. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. The cam is in very good used condition and will likely be reused. This will help you get the full details directly from the manufacturing, which requires the model and other factors that need attention. COMP Cams 12-600-4 Thumpr Cam, Small Block Chevy, 2000-5800 RPM. 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 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. I have a new cam was told it was a comp cam # 1136 230780 any ideas on cam specks. Add the two numbers together and divide by 2. order on 8.1L big block engines is different than a normal big block. 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. 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. The next information engraved on the cam was HR 114. Thanks, Mike. They are widely used and they perform well, which is more affordable than a roller cam. JAMSI is a trusted source of automotive engine parts. (Advanced five degrees; use spring P/N 3970627.) Part Number: Type: DUR @ .050" Lift: C/R: LSA: Usage: 14093643: Hyd. Installing a Timing Belt on Ford Ranger chevrolet image by Eduard Shelesnjak from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media. I have a 1969 z28 I bought a few years back from a friend who was orig owner. 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. They dont add to the function of the camshaft itself. GM is recalling seven. . Stamp numbers are engraved by the manufacturers to monitor production and distribution. They are not so much of the speeding type. (You must log in or sign up to reply here. Check this castingcarefully to determine which features it may have. $426.78. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It's for a 99-04 truck. How does this compare to the 69 dz 30/30/ cam? Thanks, Gary in N.Y. P.S. Four or six-cylinder can be attached to the valves. Privacy Policy. The easiest way to get the best is to check the numbers in between the lobes or boxes. These spec are for cam install @108 intake ctr line duration @.050 intake 236 ext 242 lobe lift .3470in .3600 ext lobe selection 112.0 where do I set my timeing for first start ? The engine needs to function by opening the valve with the help of the camshaft. 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. This is the number of crankshaft degrees of separation between the intake and exhaust lobe center lines. The 8th digit of the VIN. Required fields are marked *. It doesnt add to the function of the camshaft, nor does it play an important role. To decipher these codes, we accessed COMPs website at compcams.com. Can you tell me the specs on this cam from these numbers? They appear to be a rock arms with a small diameter. Any time you are making this kind of important decision about your engine, it's . The Fora platform includes forum software by XenForo. Personally, I would trash the cam and go buy a new cam and lifter set that you know what the grind is. many years ago! In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. 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. Im looking into a cam to suit small block ford. 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. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more! ). Chevy Intake Manifolds For a better experience, please enable JavaScript in your browser before proceeding. .390 .410 310 320 1.50 In 1968, it was the cam for the 307/200hp; 327/210hp, 250hp, 275hp, 300hp; and 350/295hp. Does Your License and Registration Address Have to Match? 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. All of these applications had the same specs as the initial 1967 application. The next two numbers are the valve lift of . 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. The Chevy part number for that cam is 3896929. CAM 6964 1969 CAMSHAFT ID. What Happens When the Turbo Goes on a Diesel? 330545..73350.76cc chamber, 2.02/1.60333881..74-75350.76cc chamber, 2.02/1.60333882..74-80350/40076cc chambers340292..70's.Over the counter, angle plug, 64cc chamber354434..75-79262/267/30560cc chambers358741..76-79305376445..77-85350.76cc chamber, small valves376450..75-81262/267/305..6 or 7 exhaust bolt holes, 60cc chamber462614..77-79305.60cc chamber462624..75-86350/40076cc chamber, 1.72/1.5, 1.94/1.5 or 2.02/1.6 valves458642..75-84350.350468642..76-up350/400471513..79267/350517513..79267/3501816887.63283.Made in "Canada", GMC HD truck3636839.552653703523.552653713358.55-562653713569.55-562653725306.562653731539.57283.283 HP FI3731544.57-612833731554.57-622833731556.57283.Truck, Made in Canada3731762.56265.Vette, 2x4 carbs3737775.62-67283/3273740997.57283.1x4, 2x4 & FI (exc.-283hp)3743056.582833743096.62-67327.GMC Truck3747363.57-612833747460.59-67283/32770cc chambers3748770.582833748772.58-612833755537.57-622833755549.57-622833755550.592833755585.62-67327.GMC Truck3767460.59-602833767462.62-673273767465.59-612833767754.59-61283.60cc chambers3767792.60-642833774682.60-64283/32770cc chambers3774684.62-64327.75cc chambers3774692.58-64283.60cc chambers3782461.64-66327Camel hump,no accessory holes,160/62cc port volumes,62cc chamber3782461X60-63283/327..Camel hump,no accessory holes,larger 172/64cc port volumes, 62cc chamber3795896.63-6528360cc chamber3795896.62-6432760cc chamber3798996.63-673273814480.60-67283/327..70cc chambers, 1.72/1.5 valves3814482.62-67283/327/350..75cc chambers3817680.63-67283/3273817681.62-673273817682.61-622833836839.552653836842.57-67283/3273837064.56-62265/2833837065.55-56265.Truck3848720.57-582833876775.60-67283/32775cc chamber3884520.60-67283.Some marked "Made in Canada", 60cc chamber, also used by Studebaker3884520.62-67327.Some marked "Made in Canada", 60cc chamber, also used by Studebaker3890462.66-67302/327/350..Camel hump,no accessory holes,64cc chamber3901068.87-up350.Crate motor, 285hp, 64cc chamber3911032.68307/32770cc chamber3912264.58-622833912265.63-642833912311.65-673273912313.65-673273917290.67-68307/3273917291.67-68302/327/350..Camel hump,no accessory holes,64cc chamber3917292.68327/350Camel hump,64cc chamber3917293.67-68307/32775cc chambers3927185.69-76307/327/350..70cc chambers3927186.69-70302/350Camel hump,64cc chambers,accessory holes3927187.69-70350.Camel hump,64cc chambers,accessory holes3927188.69327.74cc chambers3927188.70307.74cc chambers3931633.68-733073931635.68-763503931638.68327.Truck3932441.69-70350.76cc chambers3932441X69-70350/40080cc chambers3932454.69-733073932454.69-79350.Truck3946812.693503946813.69-79350.Truck3947040.68327."Right angle" casting identifier, 64cc chambers, good HP head,used in trucks, no accessory holes3947041.69-70302/350"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head3947041X69-70302/350"Right angle" casting identifier, 64cc chamber, 165cc intake port, accessory holes, good HP head3951598.70400.76cc chambers39642863503965742.70350.over the counter, angle plug3970126.67-71327/3503973370.69-70350.over the counter in US, Canadian 350/300hp production use in Pontiac, 64cc, straight or angle plug3973414.70350.LT1-350/370hp, Camel hump, 64cc chamber3973487.71-72350.1.94/1.5 or 2.02/1.6 valves, was also used on '71 350/330hp LT1, 75cc chamber3973487X71-72350.1.94/1.5 or 2.02/1.6 valves, 75cc chamber3973493.71-72400.76cc chamber3986316.71350.76cc chamber3986336.71350.76cc chamber3986336X71350.76cc chamber3986339.71307/35074cc chamber3986339X71307/35074cc chamber3986388.68-76307/3503991492.70350.LT1,Camel hump,accessory holes,64cc, straight plug3991492.70-up.over the counter,Camel hump,64cc, straight or angle plug3998916.72350.also used w/'72 350 LT1, big valves, screw in studs, 76cc chambers3998920.72-733503998991.72-73307/35075cc chambers3998993.72-73307/35075cc chambers3998993.current..350Goodwrench crate motors,"Hecho en Mexico", 75cc chambers3998997.72-73350/40076cc chambers3998997.78-84305/35076cc chambers4079261.7535010033867Aluminum,over the counterPontiac 23' head,62cc,angle plug, 196cc intake port10045434Over the counter Pontiac 15' head 55cc, angle plug, raised runner aluminum, "roll over" head10051101Bowtie, aluminum, 55cc, angle plug raised runner, 196cc intake port1006520287-95350.Truck1006520387-95350.Truck1006520487-953501006520587-953051006520687-953501006520787-953051008811388-up350.Aluminum, 58cc, angle plug, raised "D" port exhaust, 1.94"/1.5" valves10093328Over the counter, Pontiac 15' head aluminum,224cc ports, 61cc chambers "roll over" head1010617890350.LT5, ZR1, DOHC, 32-valve, pass.

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