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The prefix consists of five digits and explains the date and the location of the Chevy's manufacture. Different chamber volumes, port volumes, port locations, valve sizes, etc. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The car has all orig drive train, Except for fuel injection and headers. ). They make castings for CMC (Camshaft Machine Corp.) and EPC (Engine Power Components) and others. View (5) $203.95 More Info. For instance, if you have numbers like 266H04, the last two digits are the numbers used to show the measurement of the lobes. Can Jumpstarting a Car Damage the Alternator? 0967 is the last four digits of the GM part number. Also there is a Blue dot just under the distributor drive gear. ZL-1, Mark IV3946053.427.97-up4-bolt, Alum. 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 . How to Turn off Daytime Running Lights (Explained), How to Turn Off Headlights While Car is Running. It has a taper inside the lobe which ensures the lifter can spin. 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 . It helps you know the compatibility of the camshaft to the supposed vehicle you want to use it for. I only put the numbers here that I can prove, so this is a short list. 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. the 4.3L LT1 was also referred to as the L99 (not to be confused with the LS variant bearing the same name) My buddy says its a mild cam thats bigger than a stock LS6 version, but he didnt have any more information. My grandfather was one of their 1st employees when they started out as Cambell, Wyant, and Cannon back in the early 1900s. Looks to have stock cast iron heads and exhaust. For instance, the number for a Toyota 3SGE would be CS 3SGE. 14088552 Leave a comment at the end of this post if you cannot find the information you want. This was one of the best selling/most popular cams through the years past! I actually went through several lists and made some corrections before making this list. CAST3736098. journal.3.00" stroke3849847.283.forged..small journal.3.00" stroke3876764.283.forged or cast..sm. 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. They dont add to the function of the camshaft itself. I have a new cam was told it was a comp cam # 1136 230780 any ideas on cam specks. All of these applications had the same specs as the initial 1967 application. Your camshaft is important; your engine isnt meaningful without the contribution of the Camshaft. They are widely used and they perform well, which is more affordable than a roller cam. How to Get a California Drivers License with an Out of State License, Can You Register a Car Online in Florida? Chevy V8 SBC Block and Head Casting Numbers. This same pattern was followed throughout the 1997 production cycle. You need the measurement of the diameter to compare with the database or any online store IDs. 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. If I rotate the camshaft the other side has markings of AO, D14. It is a mode of identification used by manufacturers. Does OnStar Keep Location History? The markings on end of cam is 300C6 and X6733. 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 cam is in very good used condition and will likely be reused. 366298.4Bowtie, Aluminum, billet main caps, 3.398" bore with sleeves, two piece rear main seal. Stamped numbers are 529506 and 031531. indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. This card reveals the basic information you need to identify, properly install, and degree the camshaft in the engine. Which cam are you refering to that helped your son achieve 11.80? 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: On the shaft the #'s 1539 are stamped in one spot, and CWC is stamped in another spot. Chevrolet "Stock" LS Camshaft. Their outer look tells the difference. Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! Stock GM LS engine cams feature LSA anywhere from 116 to 121 degrees because GM is concerned with creating a very smooth idle. In 1969, it was the cam for the 307/200hp; 327/210hp, 235hp; and 350/250hp, 255hp, 300hp. Any advice? Why are Volkswagen Oil Changes so Expensive? 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. They appear to be a rock arms with a small diameter. No smoke, but I have not checked compression yet. many years ago! What Happens When the Turbo Goes on a Diesel? Thanks, Your email address will not be published. A DOHC is known as a dual overhead cam. I have no idea whats on the inside. GM 6930 , 6964 and 5054. Below is some reference data for cylinder head casting numbers with valve sizes, years used, etc. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. Other examples include small block Chevys -12, big block Chevys -11, and 5.0L small block Fords -35. Camshafts Melling offers a full line of OE replacement camshafts for cars, light duty, medium duty and heavy duty trucks. 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 ? Are you a newbie in dealing with cars and you seem not to know how useful a camshaft is and what is used for? Less overlap generally produces a more stable idle while more overlap makes the idle lumpier. I have a Pontiac camshaft with 960938 number on the backside. The specs you have listed above for that 115835 part number is correct, the L/S is 109* instead of 110*. How Long Does it Take for Oil to Drain Back into the Pan? Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Locate the ID number on the camshaft. Speed isnt a problem with a dual camshaft and it increases the engines power. This hydraulic flat tappet "454" is a good street high-performance and marine cam used in the Gen V 454 H.O. We have it in internal combustion engines and some electric motor speed controllers. 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. Carb number is stamped in this location as well as on an identification tag held on with one of the air . CAM 6930 1967 CAMSHAFT ID. This advances the intake centerline by that number of degrees. The exhaust number also comes through some time, maybe if you see digits like 266/288; the second shows the exhaust number. can you help me to decode this cam . The Chevrolet small-block engine is a series of gasoline-powered, V-8 automobile engines, produced by the Chevrolet division of General Motors between 1954 and 2003, using the same basic engine block.Referred to as a "small-block" for its size relative to the physically much larger Chevrolet big-block engines, the small block family spanned from 262 cu in (4.3 L) to 400 cu in (6.6 L) in . exhaust valves. 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. .390 .410 310 320 1.50 In 1968, it was the cam for the 307/200hp; 327/210hp, 250hp, 275hp, 300hp; and 350/295hp. Visit www.jamsionline.com to shop today. You can make a sure bet by just selecting randomly but your engine life will be in big problem. Ford Au part no ! It models the airflow for the computer to calculate fuel. 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. Once we found the hydraulic roller section, the first column lists each lobe by number. no idea) and only pulls about 10psi vac at idle. 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. If you are confused as to which cam you should buy for your beast, Crane has you covered. 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. The 3709 lobe is listed as 265 degrees of advertised duration with 212 degrees at 0.050 and .328-inch lobe lift. 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. PG,63 4WD 1st series. This is what is on the cam, it would not let me past a picture here. 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. GEN III vs GEN IV. I was pretty careful with the float settings etc and it fired right up when put back on! i have a 383 chev engine ibought and would like to know what cam is in it. 4009f/4024f 68553-06. motor could have casting number 10112391 or 10112391S that is the service replacement. In 1973, it was the cam for the 307/115hp; 350/145hp, 175hp, 190hp; and 400/150hp. While a simple call to the COMP Cams CAM HELP tech line (1-800-999-0853) and short discussion with one of the highly informed tech line personnel will always get you the right answers, having a little personal knowledge on the topic is always a good idea. This is a COMP Cams timing card. There following are ways you can tell a difference: As the name implies, these sets of numbers reveal the model of the camshaft. A roller camshaft has its wheel attached to the bottom of the lifters body. JavaScript is disabled. * 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. Now zero the indicator and turn the engine backward until the dial indicator reads roughly 0.100-inch. 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. COMPCams uses two-number designations for all its engine families. (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. 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. This an original 1966 283 camshaft casting number is 3732798, hydraulic lifters. 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. CWC is the foundry that cast the cam blank. They include: 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. You can also use an analog system to identify unknown camshafts. The identification number consists of a seven-to-eight digit code. Good Day: The best way to identify an unknown camshaft is by identifying it with your eye or using stamped numbers engraved on the camshaft to identify it. The only stamped markings on the front are 951758. It means the valve is open at 255 degrees. In 1974, it was the cam for the 350/145hp, 185hp, 195hp; and 400/150hp, 180hp. It doesnt add to the function of the camshaft, nor does it play an important role. If you don't have the VIN, you can still identify the engine by visual inspection if you know what to look for. Chevy V8 Casting Number Locations. Add the two numbers together and divide by 2. GM used a forged crankshaft, oil-spray cooled Hypereutectic pistons, and a hydraulic roller camshaft made to handle boost. I'll post up a pic as well. On the outside there is a Carter AFB 9637 (625CFM) sitting on an Edelbrock manifold. Learn more about: Cookie Policy, Will a 50 Inch TV Fit in my Car? 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.numbers on cam end are z102 and also 14p. They minimize friction, which ensures the camshaft contains more power. Its got a great loping idle (big cam?? With over 35 years of experience in automotive machining, you will not find a more trustworthy and reliable source of parts. News Chevrolet Performance Releases The Impressive L8T As A Crate Engine . Thank, Ray. The next two numbers are the valve lift of . That gives us our first clue where to look for the rest of the numbers. I purchased a used hydraulic roller camshaft from a friend that was originally used in an LS1 engine. Is there any way anyone could hp me out? Step 2 Find the profile or grind number. In 1969, it was the cam for the 307/200hp; 327/210hp, 235hp; and 350/250hp, 255hp, 300hp. The only thing we dont know from these number is the cams intake centerline. In 1971, it was the cam for the 307/200hp; 350/245hp, 270hp; and 400/255hp. 10186060 Hydraulic Flat Tappet "454". Trying to find the specs on this camshaft. Required fields are marked *. Analog system. 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. Can you tell me the specs on this cam from these numbers? When referring to LSAs, the larger the number, the more degrees of separation between the intake and exhaust lobes. With your cam it might come out to somewhere between 114 to 110 degrees depending on if the cam was machined with advance. 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. Camshafts are stamped by the manufacturers as a means of identification. 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. Thanks, Gary in N.Y. P.S. Personally, I would trash the cam and go buy a new cam and lifter set that you know what the grind is. Apr 13, 2014 Yeah, it has CR 760 stamped on the back, and then a date under it. . Each family of cam lobes has its own numerical designation with the same basic configuration, usually encompassing multiple individual durations that also might include changes in lobe lift. My 1968 Camaro Site. by Greenlight Mon Nov 10, 2014 6:56 pm. 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. All you have to do to determine valve lift is multiply the lobe lift times the rocker ratio. By visual inspection. 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. The numbers engraved in the body part of the camshaft are called the Stamped number or casting number. 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 hope it helps you identify the Chevrolet engine parts you are working on. 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. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. Chevy V8 BBC Block and Head Casting Numbers. There are 3 different ways to select your camshaft tightly. 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. Step 1 Find the model prefix. It is 8 figured random numbers and sometimes 9 figures with the last 4 numbers identifying the specific function of the Cam Shaft. These numbers only describe the functions or tell the specifics of each product. p/n 12560967, .466/.457, 191/190, 114 LSA. 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 ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. The numbers on it are, 3734R/3377R, HR13, I 3996-06. $799.00 +$36.00 shipping. They are the flat tappet and roller camshaft. Stamp numbers are engraved by the manufacturers to monitor production and distribution. The 8th digit of the VIN. Show entries Search: Showing 1 to 10 of 46 entries Previous Next Big Block Crankshaft Casting Numbers Lookup Vortec truck, Gen.I crate motors and ZZ4, roller cam, one piece rear seal: 12550592 : 97-up : 350 : crossbolted block, Gen.III, LS1, aluminum: The LEA is an engine produced by General Motors for a wide variety of compact and midsize vehicles. I dont have any numbers. Jeff Smith: First of all, the CC refers to COMP Cams. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. Looking for 4311-4314-r106 Q 7388-04 CAN ANYONE TELL ME WHERE I CAN LOOK THE SPECS UP! This is an involved process, requiring the removal of the engine's front end. 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. There are at least 6 different versions as of 11/99. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 1014789895-98350.Gen.I crate motor1015955087-953501015955187-953051015955287-953501015955387-953051017438991-94350.LT5, ZR1, DOHC, 32-valve, drvs. This is a job for professionals and the mechanically-inclined. Thank you, if you can help, send me an e mail and I will send you a picture. The first three-digit number shows the average duration time of the lobes. DOHC is a production to improve the volumetric of the internal combustion engine in which it has more power than a simple overhead cam. They dont own the name flat, but the lobes of roller camshafts are perfectly flat. 1954-1955 235 Engine 3835913; 1956-1962 235 Engine 3836848; 1956-1962 261 Engine 3836850 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. Any time you are making this kind of important decision about your engine, it's . In 1971, it was the cam for the 307/200hp; 350/245hp, 270hp; and 400/255hp.