They dont own the name flat, but the lobes of roller camshafts are perfectly flat. The car came with the two cams you identified above, Stored in cardboard tubes, With the #5054 & date 1971 stamped on tubes. Analog system. I am partially colorblind so they may be sort of tanish as well. This is what is on the cam, it would not let me past a picture here. Under that heading toward the bottom we found a tab for the Cam Lobe Master Catalog. Show entries Search: Showing 1 to 10 of 46 entries Previous Next Big Block Crankshaft Casting Numbers Lookup eBay Product ID (ePID) 2320190292. Compare Related Articles. exhaust valves. Locate the ID number on the camshaft. Thank, Ray. Thanks, Gary in N.Y. P.S. Learn how your comment data is processed. It's real easy to spot if the heads are off because of the small 3.74" bore. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. In this case: 108 + 116 = 224 degrees / 2 = 112 degrees. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. In 1969, it was the cam for the 307/200hp; 327/210hp, 235hp; and 350/250hp, 255hp, 300hp. Quick View. I have a cam trying to set startup timeing hr112 intake hyd .555 ext .576 duration .006 valve tapping lift 287 in 293 ex valve timing .050 open int 10 close btdc46 abdc exh :57 BBdc 5 ATC. In 1970, it was the cam for the 307/200hp; 350/250hp, 300hp; and 400/265hp. GM 6930 , 6964 and 5054. 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 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. This is the COMPCams equivalent of the Rosetta stone for cam lobes. Could someone help me identify these cam numbers ? Why are Volkswagen Oil Changes so Expensive? They are widely used and they perform well, which is more affordable than a roller cam. Speed isnt a problem with a dual camshaft and it increases the engines power. All you have to do to determine valve lift is multiply the lobe lift times the rocker ratio. This is a COMP Cams timing card. 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. Any info helps, or where I can find. But this comes at the cost of reduced torque in the middle of the rpm band. Switching to Synthetic Oil After 100k Miles: Pros and Cons. The LS . Stock GM LS engine cams feature LSA anywhere from 116 to 121 degrees because GM is concerned with creating a very smooth idle. By visual inspection. If you are confused as to which cam you should buy for your beast, Crane has you covered. The prefix consists of five digits and explains the date and the location of the Chevy's manufacture. The 3709/3711 numbers are references to lobe designs. I have more than 4 Camaro's am I Addicted? This hydraulic flat tappet "454" is a good street high-performance and marine cam used in the Gen V 454 H.O. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The greater number of degrees means there is less overlap between the intake and exhaust lobes. 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. 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. I just rebuilt the carb as it was pretty dirty and leaked at the accel pump. 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 ? Small Block Casting numbers Big Block Crankshaft Cylinder Head ID Use these casting numbers to identify the heads you have. A pushrod is a metal tube constructed to transfer the valve motion of a lifter riding on the camshaft directly to the value. Manufacturer Part Number. The model prefix is the first part of the camshaft number, and it describes the vehicle that the camshaft is meant for. however, depending on how you want to look at it. 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: I'll post up a pic as well. (Yes or No), Will Hub Centric Rings Stop Vibration? Hope weve helped you with a little more camshaft knowledge. The only thing we dont know from these number is the cams intake centerline. Can You Register a Car in a Different Name than on the Title? Every engine needs a timing device that can control the opening and closing of the intake and exhaust valves. The "2182" Casting number identifies this camshaft as GM part number 3972182. His work has appeared in the "New Haven Register," Medford's "Mail-Tribune" and the "Ashland Daily Tidings." Is there any way anyone could hp me out? Oct 8, 2010 #2 Z z28rod Veteran Member Apr 30, 2009 4,472 hopewell junction,ny We found it under the heading of Xtreme RPM for LS1 lobes, Hi Lift. CWC is the foundry that cast the cam blank. SMALL-BLOCK CAMSHAFTS AND COMPONENTS 3896962 Hydraulic flat tappet Duration @ .050" Lift (deg): I: 222 / E: 222 Maximum Lift (in) w/1.5 rocker*: I: .450 / E: .460 Lobe Centerline (deg): 114 Used in 350-/290-HP crate engine 24502476 Hydraulic flat tappet Duration @ .050" Lift (deg): I: 212 / E: 222 Maximum Lift (in) w/1.5 rocker*: I: .435 / E: .460 That gives us our first clue where to look for the rest of the numbers. .390 .410 310 320 1.50 in 1968, it was the cam for the 307/200hp; 327/210hp, 250hp, 275hp, 300hp; and 350/295hp. Inc. Lee's Summit MO. Camshafts come in a wide array of variations, and Chevrolet has a range of camshafts for different applications, engine sizes and performance specs. Small Block Crankshaft Casting Numbers Lookup Type your crankshaft casting number in the SEARCH BOX below. Which cam are you refering to that helped your son achieve 11.80? This will give you the intake centerline. 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. **Due to the COVID-19 pandemic a large number of products are on backorder and shipping times are longer then usual. For instance, the number for a Toyota 3SGE would be CS 3SGE. Roller: 202/206 .403"/.415" Can you guys help me pick a cam and fix my combo? journal.3.00" stroke3849847.283.forged..small journal.3.00" stroke3876764.283.forged or cast..sm. Show More Show Less. Hey Keith, we did some quick sleuthing and your cam MAY be for a BBC Marine (boat) motor application thats been discontinued. The engine also had smaller 1-1/8? How Long Does it Take for Oil to Drain Back into the Pan? The 3709 lobe is listed as 265 degrees of advertised duration with 212 degrees at 0.050 and 0.328-inch lobe lift. The numbers on it are, 3734R/3377R, HR13, I 3996-06. Add the two numbers together and divide by 2. COMPCams uses two-number designations for all its engine families. On the shaft the #'s 1539 are stamped in one spot, and CWC is stamped in another spot. JavaScript is disabled. The next two numbers are the valve lift of . They make castings for CMC (Camshaft Machine Corp.) and EPC (Engine Power Components) and others. The radiator, hoses, timing assembly, belts and fan will need to be removed to access the camshaft. However, most cams intended for street use are ground with several degrees of advance. Step 1 Find the model prefix. The identification number consists of a seven-to-eight digit code. All of these applications had the same specs as the initial 1967 application. We found it under the heading of Xtreme RPM for LS1 lobes, Hi Lift. I have a Pontiac camshaft with 960938 number on the backside. In 1974, it was the cam for the 350/145hp, 185hp, 195hp; and 400/150hp, 180hp. Quick View. Stamped on end is Z099, also has three pink dots above that stamping. That gives us our first clue where to look for the rest of the numbers. 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. JAMSI is a trusted source of automotive engine parts. One of these cams looks unused and the other at best slightly used. 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. 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. PG,63 4WD 1st series. I have no idea whats on the inside. A good understanding of these factors will assist you in making a wise decision. The numbers engraved in the body part of the camshaft are called the Stamped number or casting number. They are not flat, and they are recognized with a slight crown on the face. Retired GM employee, John Hinckley, an NCRS Master Judge, explains the one number . Thanks, Your email address will not be published. You can also use an analog system to identify unknown camshafts. 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 . The specs on that cam are: (read int lift, ehx lift, int duration, exh duration, rocker ratio). CAST3736098. i have a 383 chev engine ibought and would like to know what cam is in it. The markings on end of cam is 300C6 and X6733. This will help you get the full details directly from the manufacturing, which requires the model and other factors that need attention. You need the measurement of the diameter to compare with the database or any online store IDs. Chevy V8 SBC Block and Head Casting Numbers. At one time they supplied 85% of the blanks in the world. Step 2 Find the profile or grind number. Also a great fitting cam for the earlier 302 or 327 Solid lifter Hi-Po motors used by Corvette, Nova or Camaro. Dec 31, 2009. A good camshaft cannot be underrated, so you need it to make your engine function well. If you don't have the VIN, you can still identify the engine by visual inspection if you know what to look for. Less overlap generally produces a more stable idle while more overlap makes the idle lumpier. (Yes or No). The LEA is an engine produced by General Motors for a wide variety of compact and midsize vehicles. 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. I have a new cam was told it was a comp cam # 1136 230780 any ideas on cam specks. Reading a Cam Card: Advance 1014789895-98350.Gen.I crate motor1015955087-953501015955187-953051015955287-953501015955387-953051017438991-94350.LT5, ZR1, DOHC, 32-valve, drvs. Ford Au part no ! If it is an aftermarket service replacement cam, it may not have the same last 3 digits of the casting number cast between the lobes. Their outer look tells the difference. In 1972, it was the cam for the 307/130hp; and an optional cam for the 350/165hp, 175hp, 200hp; and 400/170hp. Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! with Jeff Smith: How to Decode a COMP Cams http://www.onallcylinders.com/Jeff Smith: First of all, the CC refers to COMP Cams. Quick View. These numbers only describe the functions or tell the specifics of each product. GM is recalling seven. The pushrods cam stays above the cylinder, which is always above the combustion chamber. To Develop Good Eye Habits While Driving You Should? Now turn the engine clockwise and stop at 0.050 on the opening side of max lift and record the degree wheel reading. i have some stamps on the cam that i can see EP236 and CWC can these be used to idetify the cam. I bought a 34 Ford pickup with a 302 installed. Lift of tested lobe could be .300" before wear. $799.00 +$36.00 shipping. I was given a can that has the #s Your email address will not be published. I tried searching & googling these markings with no luck. 4485B 4391B HR112+4 R (with a line under the R ) then CC and at the bottom G1979-14. This same pattern was followed throughout the 1997 production cycle. For instance, the Duntov cam has a GM part number 3736097 but cast into the camshaft is the number 3736098. 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. 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 Displacing 2.4 liters in an inline-four configuration, the LEA is part of the Ecotec engine. The recall affects several models of heavy duty Chevrolet Silverados and GMC Sierras with optional engine block heaters. (Yes or No). side, aluminum1017439091-95350.LT5, ZR1, DOHC, 32-valve, pass. CAMSHAFT SPECIFICATIONS Part No. I can quote you the numbers from the 1964 "Parts and Accessories Catalog" but, be aware that earlier numbers may exist and be superseded by the ones listed in this catalog. It means the valve is open at 255 degrees. 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. For as simple as this product appears, it is actually a very complicated piece of engineering if you study it closely. In 1975, it was the cam for the 350/145hp, 155hp, 165hp; and 400/175hp. Camshafts are stamped by the manufacturers as a means of identification. Camshafts are identified by (usually) the last 4 digits of the part number and a casting symbol. Chevrolet LS7 Camshaft. I have Comp Cams camshaft. You can make a sure bet by just selecting randomly but your engine life will be in big problem. The specs on that cam are: (read int lift, ehx lift, int duration, exh duration, rocker ratio). 52.01.07 Any help much appreciated. I have a 1969 z28 I bought a few years back from a friend who was orig owner. Getting a camshaft can be a burden on many car owners; it works well when you have the right one. We have it in internal combustion engines and some electric motor speed controllers. Any advice? On the outside there is a Carter AFB 9637 (625CFM) sitting on an Edelbrock manifold. Anyone know whos cam this is. There are other camshafts that can be viewed in this category, they include: SOHC means simple overhead cam. Once we found the hydraulic roller section, the first column lists each lobe by number. ZL-1, Mark IV3946053.427.97-up4-bolt, Alum. I actually went through several lists and made some corrections before making this list. Looking for 4311-4314-r106 Q 7388-04 CAN ANYONE TELL ME WHERE I CAN LOOK THE SPECS UP! COMP Cams 12-600-4 Thumpr Cam, Small Block Chevy, 2000-5800 RPM. 4270 H11 then letters CC vertically, then CB6554 can you tell me the specs on this cam? My buddy says its a mild cam thats bigger than a stock LS6 version, but he didnt have any more information. Can You Register a Car with a Bill of Sale and No Title? A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. GM was looking for a more powerful engine for the CTS-V and ZL1 Camaros. 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. Chevy V8 Casting Number Locations. Step 2 Locate the ID number on the camshaft. They dont add to the function of the camshaft itself. 1954-1955 235 Engine 3835913; 1956-1962 235 Engine 3836848; 1956-1962 261 Engine 3836850 (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 second lobe number 3711 refers to the same family of lobesthis one specd at 269 degrees advertised with 216 degrees at 0.050-inch tappet lift with a lobe lift of 0.330 and a theoretical valve lift of 0.561-inch. They appear to be a rock arms with a small diameter. How to Catch Someone Putting Nails in Your Tires (5 Best Ways), Method 2: You can Identify with Stamp Numbers, what to do after replacing your camshaft sensor in your car. i have a 383 chev engine ibought and would like to know what cam is in it. Small Block Chevy Factory Camshafts . Canadian made ERTEL brand. 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. 366299.4Bowtie, Aluminum, nodular iron splayed caps, wet sump, 4.00" bore389257..302..67.2393288..28365-672460703..350..78.4460776..30578-792460777..30578-792460778..30578-792 or 4, some Canadian assembled heavy duty truck blocks have 4-bolt main caps471511..26779-8223556519.28358-6123703524.265..55.2No oil filter3720991.26556-5723731548.265572No side motor mounts3731548.283572No side motor mounts3737739.28358-6423756519.28358-6223782870.32762-6723789817.28362-6423789817.32762-6723789935.28361-6423790721.28362-642Chevy II recessed oil filter boss3790721.32765-662Chevy II recessed oil filter boss3791362.32762-672Chevy II recessed oil filter boss3792563.327..65.23792582.28364-6523794226.28358-6323794460.32762-6423830944.327..63.23834810.28364-6623834812.28362-6323837739.28358-6223849852.28357-6623849935.28365-6723858174.32764-6723858180.32764-6723858618.35068-7623862194.28365-672Chevy II recessed oil filter boss3862812.28362-6423892657.302..67.2Z-28 Camaro3892657.327..67.23892657.350..67.2Camaro3896944.28366-6723896948.28366-6723903352.327..67.23914636.307..68.23914638.307..68.23914653.30768-7323914660.327..68.23914678.302..68.2Z-28 Camaro3914678.327..68.23914678.350..68.23931174.307..68.2Truck3932371.30769-7323932373.30768-7323932386.302..69.4Z-28 Camaro3932386.327..69.23932386.350..69.2 or 43932388.327..69.23932388.350..69.2 or 43933180.32768-6923951509.40070-7143951509.40074-8023951511.40070-734Some replacement blocks had 2-bolt main caps3956618.302..69.4Z-28 Camaro3956618.32768-6923956618.350..69.2 or 43956632.307..69.23959512.32762-672Was also used for some "CE" replacement blocks3959532.283642Used for some "CE" replacement blocks3959538.327..2Chevy II recessed oil filter boss, Used for some Chevy II "CE" replacement blocks3970010.302..69.4Z-28 Camaro3970010.327..69.2Trucks and industrial3970010.35069-802 or 43970014.35070-762 or 43970020.30769-7323970024.30769-7324715111.305..80.26259425.35069-762, 95509..400.762 bolt have only seen one10036033350..4Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico"10046164305..86.210049804..4Aluminum, Pontiac Super Duty version of Gen.I SBC, 4.00" bore, 350 mains, 2-piece rear seal, splayed caps, GTP race block10051182..2 or 4Bowtie, 3.75"-4.30" bores, 1 or 2-piece rear seal10051184..4Bowtie, 4.00"-4.155" bores, 1 or 2-piece rear seal1005472735086-up2 or 4one piece rear seal, some "Made in Canada"10066036350..2 or 4Target Master/Goodwrench crate motor, 2-piece rear, seal, "Hecho en Mexico"10066038350..92.4Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico"10090511350..90.2LT-5, ZR1 Vette, 375hp1012532735092-up2 or 4Gen.II LT-1, reverse flow cooling1012532735096-up2 or 4Gen.II LT-4, reverse flow cooling10134398..4Bowtie, Aluminum, 4.125" bore, 2.65" main journals10134996..4Bowtie, Aluminum, 4.125" bore 2.65" main journals1015355835091-924LT-5, ZR1 Vette, 375hp1016858826594-962L99, Gen.II, 4.3 Liter V-8, Caprice, reverse flow cooling1019900135093-954LT-5, ZR1 Vette, 405hp1024387830596-982Vortec truck, roller cam, one-piece rear seal1024388035095-002 or 4Vortec truck, Gen.I crate motors and "ZZ4", roller cam, one piece rear seal1255059235097-upcrossbolted block, Gen.III, "LS1", aluminum1255135899-upGen.III, 4.8L or 5.3L, cast iron, truck1255136436498-04crossbolted cast iron Gen. III, 6.0L, truck1255937835099-upcrossbolted block, Gen.III, "LS1", aluminum1255984635098-upcrossbolted block, Gen.III, "LS1", aluminum1256062135098-upcrossbolted block, Gen.III, "LS1", aluminum1256062635099-upcrossbolted block, Gen.III, "LS1", aluminum1256062935099crossbolted block, Gen.III, "LS1", aluminum1256116835001-upcrossbolted block, Gen.III, "LS1", aluminum1256217435098-upcrossbolted block, Gen.III, "LS1", aluminum1256895236405-upcrossbolted block, Gen.III, 6.0L, aluminum, LS21256691032504-upcrossbolted block, Gen.III, 5.3L, aluminum, SSR truck1257104832504-upcrossbolted block, Gen.III, 5.3L1257358136498-04crossbolted cast iron, Gen.III, 6.0L, truck1257718436498-04crossbolted cast iron, Gen.III, 6.0L, truck1257739602-upGen.III, 4.8L or 5.3L, cast iron, truck1401020130580-8521401020230580-8521401020330580-8521401020735080-852 or 41401020935080-852 or 41401028026779-822140110643508341401114835087-89.Roller cam, one-piece rear seal1401637626779-8221401637935077-792 or 41401638130580-8421401638230579-8421401638330580-852Truck1407928735086-90.Truck1408852635087-89.Roller cam, one-piece rear seal1408854835086-882 or 41408855130586-872one-piece rear main seal1409362730587-942Roller or flat tappet cam, one-piece rear seal1409363835087-952 or 4Roller or flat tappet cam, one-piece rear seal1409476630586-up2One-piece rear seal1410114730585-up21410114835086-904One-piece rear seal1410205830587-912Roller cam, one-piece rear seal22551656..4Chevy/Olds Rocket block, 4.00"-4.190" bores, 2.45" main journal sizes, splayed caps, dry sump, 2-piece rear seal, 9.025" deck22551660..4Chevy/Olds Rocket block, 4.00"-4.190" bores, 400 mains journal sizes, splayed steel caps, wet sump, raised cam 2-piece rear seal, 9.300" deck.

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