It helps you know the compatibility of the camshaft to the supposed vehicle you want to use it for. Discussion in 'The Hokey Ass Message Board' started by indestructableforce, Nov 13, 2012. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Displacing 2.4 liters in an inline-four configuration, the LEA is part of the Ecotec engine. A SOHC allows at least 2 to 3 valves per cylinder configuration, with more manufacturer prowess. Chevy V8 BBC Block and Head Casting Numbers. The numbers on it are, 3734R/3377R, HR13, I 3996-06. Also a great fitting cam for the earlier 302 or 327 Solid lifter Hi-Po motors used by Corvette, Nova or Camaro. 25-12. Also can i safely run the Xtreme Energy, XR294HR on my 383 Vortec 906 heads and screw studs ? Small Block Crankshaft Casting Numbers Lookup Type your crankshaft casting number in the SEARCH BOX below. Analog system. The numbers engraved in the body part of the camshaft are called the Stamped number or casting number. however, depending on how you want to look at it. One of these cams looks unused and the other at best slightly used. Cam is in used shape but with little to no wear. It is typically located in the center of the cam between the lobes. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. One of the primary differences between the GM GEN 3 and 4 ECMs are how they estimate airflow using VE Tables. To decipher these codes, we accessed COMPs website at compcams.com. The suffix provides the. In 1971, it was the cam for the 307/200hp; 350/245hp, 270hp; and 400/255hp. How to Start a Car with a Blown Head Gasket (Explained). 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. 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. 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. Looks to have stock cast iron heads and exhaust. Each number has a meaning and an interpretation. 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. . In 1967, it was the cam for the 283/195hp; 327/210hp, 275hp, 300hp; and 350/295hp. The markings on end of cam is 300C6 and X6733. The LS engine is designated 54 and this number is generally the first two numbers that define the actual cam part number. side, aluminum10185040Bowtie, aluminum, 45cc chambers, 1st version, symmetrical ports, 263cc intake ports, splayed valves10185040Bowtie, aluminum, 45cc chambers, 2nd version, symmetrical ports, 240cc intake ports, splayed valves1020524593350.Gen.II LT1, aluminum, reverse flow cooling, 175/68cc port volumes1020764394-96350.Gen.II LT1, aluminum, reverse flow cooling, 175/68cc port volumes1020889094-96265.Gen.II, L99, 4.3 Liter V-8, cast iron, reverse flow1021533997350.Gen.III, LS1, aluminum, 68cc1022512194-95350.LT5, ZR1, DOHC, 32-valve, drvs. I have more than 4 Camaro's am I Addicted? eBay Product ID (ePID) 2320190292. 1970 Mustang Mach I "Synergy Green Pearl"351 Cleveland - Fuel Injection "The Rattle Shaker" Complete nut and bolt rotisserie restoration LESS than 500 miles by C.A.R.S. Required fields are marked *. Can a Wheel Speed Sensor Cause Limp Mode? 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 ? Any info helps, or where I can find. I have a Street Performance comp cam that was purchased in 2007. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more! 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. 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. It is a mode of identification used by manufacturers. Chevy V8 Crankshaft Casting Numbers. Identifiers: Letter R, CWC, EP1, C4 and E8. Hey Keith, we did some quick sleuthing and your cam MAY be for a BBC Marine (boat) motor application thats been discontinued. Terms of Service. 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. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! 1 BTC 42 ABC 223 30 BTC 80 ABC 290 .298 .447 114 1.5 HYD EXH. A camshaft is a rotating object in a vehicle with pointed cams in which its rotations produce reciprocal motion. Step 2 Locate the ID number on the camshaft. The chevy part number for that cam is 3896929. 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 . 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. Specs @ 0.50 Cam Lift Opens Closes Duration SAE Specs@ (0.06/Rocker Arm Ratio) Cam Lift Opens Closes Duration Cam Lift Gross Valve Lift Center Line C/L Rocker Arm Ratio Valve Lash Clearance C-400-P INT. I bought a 34 Ford pickup with a 302 installed. 49 BBC -6 ATC 223 78 BBC 32 ATC 290 .298 .447 . 10186060 Hydraulic Flat Tappet "454". The specs you have listed above for that 115835 part number is correct, the L/S is 109* instead of 110*. Below is some reference data for cylinder head casting numbers with valve sizes, years used, etc. It is an eight or nine-digit number. With this intake lobe: 0.328 x 1.7 = 0.5576-inch, which COMProunds off to 0.558-inch. Visit www.jamsionline.com to shop today. Any time you are making this kind of important decision about your engine, it's . We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. This is what is on the cam, it would not let me past a picture here. This requires a little more time but COMP does not charge extra, which is a great service if you are into tweaking the cam a bit to do something special. 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. This is a COMP Cams timing card. Jeff Smith: First of all, the CC refers to COMP Cams. Apr 13, 2014 Yeah, it has CR 760 stamped on the back, and then a date under it. 1954-1955 235 Engine 3835913; 1956-1962 235 Engine 3836848; 1956-1962 261 Engine 3836850 Compare Related Articles. 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. In 1974, it was the cam for the 350/145hp, 185hp, 195hp; and 400/150hp, 180hp. How to Get a California Drivers License with an Out of State License, Can You Register a Car Online in Florida? 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. Indestructableforce - 6930 is the last four digits of the cam's casting number, 3896930, which also has a horizontal diamond for the casting symbol. 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. The car has all orig drive train, Except for fuel injection and headers. If you notice any mistakes or have any additions, use my contact me form and let me know so I can update the list. 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. Remove the camshaft from the engine if necessary. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Small Block Casting numbers Big Block Crankshaft Cylinder Head ID Use these casting numbers to identify the heads you have. $799.00 +$36.00 shipping. You need the best camshaft that works well with your vehicle. As each engine model comes with a specific camshaft, proper identification is key to finding the right one. with Jeff Smith: How to Decode a COMP Cams http://www.onallcylinders.com/Jeff Smith: First of all, the CC refers to COMP Cams. To avoid spinning, roller lifters are lifted together. In 1969, it was the cam for the 307/200hp; 327/210hp, 235hp; and 350/250hp, 255hp, 300hp. It's a 10168588 casting that had the numbers "4.3" cast on the side, too. Oct 8, 2010 #2 Z z28rod Veteran Member Apr 30, 2009 4,472 hopewell junction,ny Personally, I would trash the cam and go buy a new cam and lifter set that you know what the grind is. Step 3 Match the number to a Chevrolet camshaft part number listing. JavaScript is disabled. The 8th digit of the VIN. Step 1 Find the model prefix. For a better experience, please enable JavaScript in your browser before proceeding. The radiator, hoses, timing assembly, belts and fan will need to be removed to access the camshaft. Also there is a Blue dot just under the distributor drive gear. Drake studied journalism at Southern Connecticut State University. CWC is the foundry that cast the cam blank. side, aluminum1011081091-up350.Gen. 1, 65cc chambers1012092887-953501012532094-96350.Gen.II LT1, cast iron version, used on "9C1" Police package, Impala SS, Cadillac Fleetwood, Buick Roadmaster reverse flow cooling 1012837492-up350.Gen.II LT1, 53cc, angle plug, aluminum, reverse flow cooling, 175/68cc ports10134352Bowtie, 45cc, angle plug, "low" port, 223cc intake port,aluminum, 18' race head10134363NOTE: This casting # has been used in many different versions of this aluminum 18' and 15' Bowtie race head. E.g. $850.12. The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for. 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. side, aluminum1010617990350.LT5, ZR1, DOHC, 32-valve, drvs. There are two easy ways: 1. It's real easy to spot if the heads are off because of the small 3.74" bore. I have a new cam was told it was a comp cam # 1136 230780 any ideas on cam specks. We continued down the list until we found the 3709 number, which because it is listed first on the camshaft, is the intake lobe. . However, most cams intended for street use are ground with several degrees of advance. Stock GM LS engine cams feature LSA anywhere from 116 to 121 degrees because GM is concerned with creating a very smooth idle. I purchased a used hydraulic roller camshaft from a friend that was originally used in an LS1 engine. At one time they supplied 85% of the blanks in the world. In 1972, it was the cam for the 307/130hp; and an optional cam for the 350/165hp, 175hp, 200hp; and 400/170hp. Privacy Policy. The end of the cam is stamped 3709/3711 HR 114 followed by CC and 7661-11. .390 .410 310 320 1.50 in 1968, it was the cam for the 307/200hp; 327/210hp, 250hp, 275hp, 300hp; and 350/295hp. Stamped numbers are 529506 and 031531. 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. In 1974, it was the cam for the 350/145hp, 185hp, 195hp; and 400/150hp, 180hp. Dec 31, 2009. It is 8 figured random numbers and sometimes 9 figures with the last 4 numbers identifying the specific function of the Cam Shaft. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. News Chevrolet Performance Releases The Impressive L8T As A Crate Engine . (Yes or No), Will Hub Centric Rings Stop Vibration? Understanding Cam Design. The 3709/3711 numbers are references to lobe designs. They include: Identifying with your eye. The cam is in very good used condition and will likely be reused. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Ford Au part no ! These numbers only describe the functions or tell the specifics of each product. Melling listings include OEM applications to match the engine requirements desired including horsepower, economy and needed engine torque. 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. The ID number will consist of either eight or nine digits; the last four numbers identify the cam and its specific application. 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. Grind numbers are HR 224/339. A pushrod is a metal tube constructed to transfer the valve motion of a lifter riding on the camshaft directly to the value. Hey. It means the valve is open at 255 degrees. 1014789895-98350.Gen.I crate motor1015955087-953501015955187-953051015955287-953501015955387-953051017438991-94350.LT5, ZR1, DOHC, 32-valve, drvs. GM 6930 , 6964 and 5054. We have it in internal combustion engines and some electric motor speed controllers. Reading a Cam Card: Advance 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. The recall affects several models of heavy duty Chevrolet Silverados and GMC Sierras with optional engine block heaters. A call to Comp at 1-800-999-0853 will probably give you some more details. These markings will usually be in the center of the camshaft, obviously in between the valve lobes. intake and 1.72 in. If you don't have the VIN, you can still identify the engine by visual inspection if you know what to look for. This is an involved process, requiring the removal of the engine's front end. They are not so much of the speeding type. 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.

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