Amc 360 casting numbers. Find the numbers and we can tell you what you have.

Amc 360 casting numbers Are there any serial numbers on the block to determine the year, or perhaps casting numbers on Intake or Cylinder heads that would indicate what year engine I have? Thanks. I used a 304 flywheel. Typically casting numbers were used for several years, so no issue there. Report Post I need help identifying a crank. All 67-up AMC V8 blocks were Head casting numbers will let you identify what kind/where a head came from. Stud Type or Bolt Down Rocker Cyl. 5 3. If there are nos signs that "401" has been ground off the side then it's a Service Replacement block. 790" center to center length. The boneyard heads I've been running recently have exhaust valves at 1. and the engine vibrated. 12 cc, which was standard after about 74. AMC kept the same part number for say, a 4 bbl head down through the years. I'd like to make these numbers with-in the 1500-6500 rpm range. I have a 401 that is this way. I am pretty sure it came from a Wagoneer but I don't know the year. No matter who casted it, what casting mould was used, or what year. Jump to Latest Impala SS and found many invaluable answers to questions. The service block had the bore of a 360 with cylinder walls thick enough to be bored out to 401 dimensions. My 73 360 and 74 401 crankflange will not fit in countersunk area on back of flywheel. 1970-early 71 304 heads use a different casting number (3199517) but are essentially the same as the 360/390/401 Does anybody on here have solid, reliable information on casting numbers, combustion chamber size, etc. it has egr, motorcraft carb and tall oil filler tube in front. Trans Am Javelin Paint. Same casting number. Yep. 25 to 1 on those, and the factory spec on the head volume is 60. The shifter is more in the middle of the T176 and the â The casting number on the head of my AMC 360 is 3233344-2. Forsale Complete from the fan to the bell housing , AMC 360 engine Casting number 3195528runs great jimclo2002@yahoo. Like the title says, I need some help/assistance in dialing in my AMC 360 Build. There are casting numbers on the block and a Identification Tag on the driver's side rocker arm cover. AMC 360 head casting diffrences. These are the early style cylinder heads that require the individual rocker arms not the later bridge style rockers setup they switched to in 1974. the casting number is 3233344 its listed from 70- 80somethin these will be going on a 1990 block. 030 over bore) Looking at a budget 325 to 350 HP build and will be using original cast connecting rods, which I've done many times before for others with no issues on 360's. 68/69 390 heads will not fit because the ports are square rather than the 1970+ dog leg ports. After all, we use both ourselves at every wrecking yard, swap meet and garage sale we visit. Trans might be date coded, I'm not up on that. 08 bore (360 bore), like the red painted block shown in this posting. Casting number is 3214725 which would indicate a 401. 01 to all for . Was told, This head casting was used on the Rebel Machines with the highest horsepower engines AMC made. The casting numbers on the T176 should be 264203 and will have the Ford “butterfly†bolt pattern at the bell housing as the T176 is really a Ford transmission. Heads from a 1971 360 should have a casting number of 3196291 and measure 51cc. The main difference is in the bowl area where the small valve heads have more material added to be able to seat the smaller valves. Must Have Head Cast # 3195528 3196291 3220502 3231475 3216090 Found the casting number, driver's side of block. Heads. (Compiled by Clark Rempel; as It is pretty well documented that casting number 3195528 was used a bunch of different years for both 360s and 401s. 0:1 pistons. The port opening and the cross sectional area through most of the length of the port is the same. The head bolt size helps a little, but not much. 6 cc heads = 10. AMC Paint Charts. There are umbrella seals on the valves, soft and pliable. 70 390 and 71 401 rods are part number 319 7049 and have a 5. 60. 2 points of compression, but even if you're gonna get the engine machined, put on the smaller chamber heads, and if you got higher compression pistons it's still only gonna come up to AMC 360, carburetor and adapter Question. The only post I could find on it was form the AMC forum where one user claims those castings to be from 88-91. My 304 came new with a 2bbl manifold. 3195528 is a 360 casting number, but was used from 71-91. i have one just like it. 6, Max 275CFM Prepping AMC V-8 Heads For Performance Use. valve cover tag begins with an 811. 325 and 360 hp: 3872702: 427: 1966: 96: 390 hp: 3873702: 396: 1966: 96: 325 and 350 hp: 3873858: 396: 1965-66: I'm having some oil pressure issues with my AMC 360 in my 79 CJ 5. I would like to know if anyone knows where the casting numbers are on the block to confirm what I have. I In my little AMC book I have 3198951 listed as a 71-78 401 casting number. Find the numbers and we can tell you what you have. 360 had a TF on it originally. 650 (approx. 75 H Check Head Casting on Complete 205500A 205510A* 3195527 3214724 3233324 30127A 1978-72 304 5. What would a person look for at first glance to identify a 343, 360, so the casting numbers sometime will not help you. Date Codes. C. The AMC 360 will bolt to your stock 1982 bell housing so you may have a stock transmission, either a T176 or a T-4. There is also the number 71 cast into the head. They are listed as 5. Visually, everything is exactly the same, except the 4 seperate "barrels" in the carb base are cut into two long ovals on the Rebel Machine piece, like on My list of casting numbers may not be complete or 100% accurate, but that's the best info I have for that number. Description: AMC ENGINE W/ROCKER BOLTS: Manufacturer: AMC\JEEP\EAGLE: Cylinders: V8: Cams: OHV: Years: 73 - 91: Engines: 5. The same digit or 2 might be cast into the lifter valley. With part number at 12:OO, counterweight is at 4:30. This is one thing AMC really screwed up on! When You are looking at ANY American Motors Vehicle while the casting number is important, more important is the engine size cast on the side of the block. 80 cu in (5,896. you must have the 360 harmonic Well trying to figure this out, and looking at this casting number in different lighting. 08 V-8 Spec. But in different light from what I can read are the numbers 21472, or maybe AMC Fan Joined: Nov/12/2020 Location: Lewis berry, PA Status: Offline Points: 3 Post Options. With the number of cracked 360/401 cylinder heads that I have been finding lately, I thought I would try to use 304 heads with bigger valves in them for the full size Jeep 360's that I build. its a 360. 1969 and earlier AMC V8s used square exhaust port heads and those heads pretty much suck. This is information widely available on the internet and not of my own research. AMC 'Small Block' V8 Engines Head Reconditioning. Other stamps or I’m not sure this is the place to post this, but I have a question about my AMC 360 engine. 1 cc). One quick note: The P-code engines used a special one-year Re: AMC 360 casting numbers help Post by Ken_Parkman » Thu Dec 01, 2011 3:47 am The stock compression ratio is 8. These ranged in displacement from 290, to 343, to the ultimate 390 cid V8. I went through this with a 360. I wish to purchase two new NOS "unmarked" AMC 360 bare "service" blocks with casting number 3198951, standard 4. Neither give a precise year Went ot Eddie Stake's site to look up casting numbers, and it looks like the closest is a 3198951, 71-78 401. 625" instead of 1. 2 kenneldave . Here's my question: Do the 1978-72 360 5. 68-70 AMX Dash Plaque Serial Numbers. one side The AMC 360 has a displacement of 359. 5:1 compression ratio. I have a decoding book that tells what the numbers are, but do not Still have the 304. The reason the year is important to me is that I need a flywheel for my 176 transmission. 680" exhaust valves - casting number 321 3948, which are 58 cc heads, resulting in an 8. No one has exactly figured out the complete system but , so far it seems fairly straight forward. However, the casting number on the back of the block, 3195528, states Are bridge type & pivot ball rocker arms interchangable on a '73 AMC 360? Forum Home > The Garage > AMC V8 Engine Repair and Modifications 7/16"if it had studs. Casting number is perpendicular to the length of the head right in the middle, about #4 cylinder rockers. The 1990 (1991 until completely phased out) 4 barrel had 9. FYI, in 1970+ motors the 360 and 1978-72 360 5. That casting # for the block was used for many Can anyone out there give me a quick lesson on where to look for,and how to interperate AMC casting date codes for AMC V8's (66-74). It does have the TF flange on the crank though so either someone used parts to build an engine or AMC used up Can anyone tell me the easiest way to identify a AMC V8 engine at first glance in a car? or tools to get under each car to see the engine size. Report Post Thanks(0) Known to be out of a dead stock 1970 360 4-speed car. 5L) AMC/Jeep four cylinder engines have this number stamped on a machined pad on the right side of the block near where head and block come together between #3 and #4 cylinder, similar to the 199-258 six (no photo). 1961, 1970, 1979, 1983, 1993) casting numbers may have to be consulted if the Engine date is important, such as for a AMC Addicted Joined: Nov/03/2010 Location: Yukon Status: Offline Points: 3565 Post Options. If you need a better year range get the block casting number and the head casting number. 80-86 also use a plastic valve cover, but many of those have been changed out to The 68-71 Borg Warners have a tag attached to the case of the transmission above the pan which carries the vendor number and the AMC Part Number for the application. 2 barrels had 8. AMC sent there dealers a plain block so they could make it whatever size they needed the block for. The other set came on the nice 360 core we bought from amxmachine a couple years ago. The block deck was also thicker so it could be machined down to 66-69 block deck height. A dealer could stock one or two blocks to use for warranty replacement. Version #3: #3197219 Does not have the "-C" after the casting number, but does have "E-25" (or other letter/number combo) cast in just above the counterweight. crank had the hole for pilot bushing. Ok, I guess that translates into February 4, 1973, I can accept that. Members Hi Bob, I am not sure if the number in your e-mail is a part number or a casting number. The 993 heads are 72 or 73 with Chevy style screw in studs, very desirable. 0 3. Sessler's "Ultimate American V-8 Engine book" 1949 to 1974 has what few casting numbers are known. I replaced the 360 with a 401 short block from AMC many years ago. 875 L-4 Eagle Premier, OHV, Fuel Injected AMC 1970-78 360 5. We also all know that 401s had thicker bearing webbing in the block. SC/360 Hornet Scoop Any 360 block from 1971 to 1975 should have a casting number of 3195528. In 74 they went to the bridged style heads. 60" valves in the 304 cylinder heads and hope that we can get the flow numbers to come close to a stock 360/401 head. . Assuming it has the heads as installed by the factory the two numbers will get you closer in range of years. IF YOU ARE UNSURE PLEASE CALL US AT 1-888-920-0052 . I My friend down at work is currently restoring his 1978 Jeep Cherokee and after we tore the engine down we found all the head and casting for the engine but we can't find any 3195528 block, no original valve cover so I used the head casting number to determine a late 71 360. The dog leg Edelbrock heads no valve size change ported Intake 2. which is supposedy a 70-84 on one website and 70-91 on another. I do have a list of the crank casting numbers . 858" center to center length. But it has an “X” after the casting number (3195528X). Here is a good used set of 1972-73 AMC V8 58cc combustion chamber cylinder heads for your 360-401 engine. So there is some "fudge factor" there. So real question is are we talking about a casting number or part # Dan Curtis-Owner and CEO AZ AMC The casting number of those heads ends with 291-C and they are one year only for the 1970 390. ghinmi . The numbers in the 401 rocker valley is 243. The only difference is the resulting compression ratio. 100 70 60 55 . Send Private Message. I paid a machine shop to balance this 360. i have what is marked in crayon as a 76 AMC 360 four barrel intake. Those casting numbers are 3210160 and 3231417 and I think they were on a Jeep. But the 360 is a transplant as the Jeep came original with a 304. from 1974-1977 Used in AMC 360 and Just can't remember. From 1970–1978, AMC used it in a number of vehicles Casting numbers on 360 heads for 304. AMC Cylinder Head Reconditioning Aftermarket Heads. [20] This is a 401 casting (same casting number) without the displacement cast into the side and with a 360 bore and thicker deck. Once you determine an approximate build date, you need block/head casting numbers in that range. Bob. 02, Exhaust 1. They didnt balance it correctly. Hurst SC/Rambler Paint. Curt Reinhardt. 5/32" larger than the above two versions) Counterweight position: 9:30 The numerical sequence of the casting number corresponds to when the engine was built and engine size has a specific casting number during the years they were built. I can add pics if I have to. 08 W/O Crankshaft Centering Ring 204500 204510* 3195528 RD51261 4487237 3195292 3196291 30123 1979 304 5. Casting # Unknown: 304: 3220515: 360: 3220503: 1977: 232/258: 3217259: 304: 3220515: 360: 3220503: 1978: Casting numbers not received from AMC: 1979: 232/258: 3227258: 304: 3233324: I cannot attest to the lists complete accuracy--it appears to be a fairly comprehensive list submitted to the NHRA by AMC for Super Stock tech The 5. This is probably asking for a bit much but below is what I am planning to do with this motor 150 (2. So AMC Addicted Joined: Nov/04/2008 Location: So. These rods are 5. 04 compression ratio (add roughly . The six cylinder and smaller V8s (290/304) use the light duty aluminum case transmission, while the 343, 360, 390 and 401 use the cast iron case transmission. The set on the 360 in my 72 Commando have the same casting number. I heard you can mill the heads to get about . 5/32" larger than the above two versions) Counterweight position: 9:30 Mean71 wrote: I'm no expert on the matter, but I believe the early '71 heads are about 8-10 cc's smaller than the later '71+ heads. Or at least they are supposed to be original, they were supposed to have come off a car that started a conversion to a comp style car, but never got finished. on a 1983 360. Part # 3196291-C cylinder heads with dogleg exhaust ports. the Rear flange has the small hole for early transmissions. We feel it is extremely accurate and is as exact as we can make it. AMC V8 Cylinder Heads It's worth mentioning that the '72-and-later 401 crank had aTorqueFlite 727 flange, so look for the casting number 812-0510 or youwill have to modify the flange to get it to work with a Ya know, you may just have 290 heads and valve cover on a 360 block. However the stroke is 3. Minor port work on heads just cleaning up some casting flaws and a little bowl work, round of some sharp edges. Peter C. 9 4. pdf. The 390 and 401 cranks are only forged and one of the reason they have the Ford dollar sign may be on them is my understanding is Ford made the forged 390 and 401 cranks for AMC. 11/32 stem, back cut valves 54ccs Average flow intake 236. Learn all about the AMC 360 engine including specs, reliability, top mods, & more. If they were 7/16" studs, you can use small block Chevy studs and go with adjustable roller rockers. Casting numbers will tell. An AMC V-8 from 19661/2 up (290, 304, 343, 360. 199: 232: 258: 290: 304: 343: 360: 390: 70-390: 401: Production years: 1965-1970: 1964-1979: 1971-1990 The casting number will be the same as a 71 401. Find Members Posts. These were used on AMC 360, 390 and 401 engines. -Steve-ADAM12MATADOR . AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5563 '70 390: #3196925 (same part number as a '70 360 but balanced differently at engine assembly) '71 401: #3211454 3-bolt(this is according to old info. Two of the four engine plants were in Mexico, Saltillo and Toluca. Engine, Head Casting Numbers & ID'ing Block. The number on the plate on the valve cover goes to a 304 from my search. ther are a set of rebuilt heads on e-bay {sorry if posted in wrong spot} casting numbers is 3212993-1 Forum Home > The Garage > AMC V8 Engine Repair and Modifications New Posts AMC Addicted Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1727 Post Options. 0 AMC 401 casting number? Jump to Latest 1. and featured a brand new block with thin-wall casting to reduce weight. 70 360 with 18 cc pistons and 291C 50. 69 AMX 74 Javelin AMX 67 Rogue If you Can anbody enlighten me concerning the following AMC V8 head casting numbers. This is one thing AMC really screwed up on! No number on the block will indicate year made, just the valve cover tag. 9L casting is bugging me though. The number will be ###L## (three numbers, letter, two according to the list of casting numbers i have its for a 70-71 360. But thats a manual that has a smaller size input shaft than the TF727 or later model AMC Th400 converter snouts. At a guess urs will be a 304/360. I have read that there are different flywheels depending on the year of the motor. This is the first time I've come across casting 352 connecting rods from an 86 360. back by the bellhousing engine casting number is 3195528. AMC Engine Specifications Head Swap information. Also says Made in Mexico (in espanol) on the block. 5K views 2 replies 1 participant last post by **DONOTDELETE** Nov 6, 2000 Last night I looked in my Performance American Style book ,published in 1972 by AMC and it shows the same casting number on the manifold of a "1970 Rebel Machine" intake. There is basically one casting number for 71-91, only one that I have recorded anyway AMC Addicted Joined: Oct/23/2008 Location: TUG HILL NY Status: Offline Points: 1988 1977 CJ 7 360 T18 D300 DANA 60 1986 CJ 7 360 AUTO 1970 AMX ex-SCCA car 1972 GREMLN CURRENT PROJECT Can anyone tell me the casting number for a 70 390 block? I realize the 68-69 had 7/16 head bolts but many people enlarge them so I wanted to know the The question is do I indeed have the 401 Crankshaft in my 360, and if so should I be using a 401 flexplate? And if you cant determine from these pictures is it reasonable that when I replace the oil pan gasket to measure the That is a 6 cylinder flywheel. If anyone has any other identifying notes please let me know. They look exactly like what you have pictured,non smog. 02" / 1. 680. 5302006-360, which is correct for a 5. 9 LTR /360 ci: Casting Numbers: 3220502 3231475 3233344 Here are our personal big-block head and block casting number lists. Ross K. Post Reply. 360 is stamped underneath the engine brackets. I would strongly recommend you to get a aluminum aftermarket intake ( Edelbrock Performer or Performer RPM ) The 360 IMHO is the BEST engine that AMC built. Send The seller says he has 2 AMC V8 cranks. Port size is almost the same between the 290-304 heads and the 343-360-390-401 heads. 390, 401) can AMC V8 Casting Numbers. Seems like a pain on this forum to add pics. Counterweight is 1"x1"x1" . I am aware that 3195528 is a casting for the 360, and it has 360 stamped on the side. Members Profile. Crankshaft flange recess measurement: 4. The valve cover tag can be reproduced if lost, or just leave aftermarket cover on. For the 360 the block casting number doesn't help much. The only other numbers that ID the block are the casting number and the displacement, which is cast into the side under the motor mount plates. the numbers on that one are3224347-1 with a J underneath. Unless you want to pull a head and measure bore and stroke . The last digit or 2 of the year will be cast into the heads in the same place as the casting number on the opposite end. From the lift specs Type 1 appears to be the 304/360 cam and Type 2 the 401 cam although the 71 TSM 3195528 is a 360 casting number, but was used from 71-91. Quote THE MENACE. I also Information about AMC engines and their specifications. It can run with less trouble then the larger 390-401 without paying a AMC Apprentice Joined: Sep/07/2013 Location: United States Status: Offline Points: 130 Thanks for the info! I found a website that states the head casting numbers (3216086) for both '73/'74 which was more confusing about why the parts were labeled 74-up. PLEASE CHECK YOUR CASTING NUMBER TO MAKE SURE THAT YOU ORDER THE CORRECT HEAD. This block has thicker main bearing webbing like 390/401 AMC blocks. 72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4. The 1970 to early-71 heads with 51cc chambers (casting number 319-6291), and the mid-70 to mid-73 58cc heads (casting numbers 321-2993 and 321-3948). Lift / AMC 502 / Chev 370 / Dodge 'J' Intake . 9 magnum. Have the head here as well. Casting number is directly below counterweight. The valve cover tag will tell what year the engine was built -- assuming it has the original valve covers on it. 025" intakes and 1. Check number cast under motor mount plate (feel for it) and block casting number. So, I assume this flywheel is a Borg Warner style. 68-69 Production Build Dates. thinks that is all that will work. The idea is to use the chevy 2. California Status: Offline Points: 4514 Post Options. 08 N/P W/Crankshaft Centering Ring 205700A 205710A* 3195528 3214724 3213754 3231475 3220502 30127A 1971-70 360 5. Jump to Latest You want casting numbers. Yes, I knew that the casting numbers were not the same, but they supposedly had very few miles on a fresh valve job, and the price was reasonable. Lee 1971 SC360 Hornet 4 speed 1970 Javelin 390 4 speed "Base Model" 1967 Rambler 220 X code 343 4 speed AMC did things to make it work and keep production flowing. Add to Buddy List. The only part number changes were for the exhaust crossover that I know of, and I've got a pretty good source. 9" was in the block casting location instead of 360. 875 L-4 Eagle Premier, OHV, Fuel Injected They are essentially a Ultimate guide to the 1970-1991 AMC 360 V8 engine. 875 L-4 Eagle, 7/16" 3239448 3244893 3239611 AMC 1988-71 150 2. AMC Forum Members. My goal for this motor is to have a respectable dyno of 430hp and near 400ft-lbs of torque. 574 indicating 390. Head hold down are bolts, head casting number is - 3212993-1. I recently acquired a '70 Javelin that is supposed to have a 360 in it. There are 2 desirable subtypes of AMC V8 heads. 70 AMX 360 4-speed (since 1981) 304-dude . Both heads have the superior dogleg exhaust port and studded rocker arm mounts. ok i just got a set of rebuilt heads and written in shop paint is "1969" now they could be 1969 heads. HEAD CASTING NUMBER CRANK CASTING NUMBER AMC 1983-88 150 2. Trader . As noted by Ken Parkman, the SR block was a 401 casting with a Known to be out of a dead stock 1970 360 4-speed car. 3195527= 304, 3179063= 343, 3195528= 360, 3190806=390, 3219851= 401. Quote matty 401. AMC ENGINES Head Specs. It wasn't long before I upgrade to a 4bbl carb and bought a 4bbl manifold out of a wrecking yard that I took off a 1970 390 AMX. "5. The heads for a 1972 401 (or 360) have 2. And when AMC started putting 6 cylinder flywheels on 79 304s, and someone asks for There were only three points inside/out that showed any kind of wear at all, the first was the cast in half ring above the timing cover seal has a very small chunk worn down from the original timing chain (engine had 165k miles), the other was end play wear (slight scarring in the casting but very minor) from my oil pump gears which were to my I have an AMC 360, 4 bbl engine that came out of a boat. If you need specific part numbers for the AMC parts, you are probably wasting time. However, my 304, those numbers can't be correct if the decoding of casting date is correct. Boris Badanov . Where would the Forum Home > The Garage > AMC V8 Engine Repair and Modifications New Posts Casting numbers are typically on the edge of the first counter weight section. 526 posts · Joined 2006 Add to quote; Only show this user 360, 401 on the side. 08 W/O Crankshaft Centering Ring The "319" heads use 50. for 1970 360 and 390 but 2 separate numbers for cross referencing 360 + 390 is 290 and also listed separately 390 is 325*??? The casting number on one of the heads is 3220502-1 and the other is a 3233344-1. came in a "lot" from a garage, not from a known vehicle. You can build any size Gen2 or Gen3 AMC V-8 EXCEPT the 290 and 304 with the service block and HEAD CASTING NUMBER CRANK CASTING NUMBER AMC 1983-88 150 2. 5:1 pistons. Well, I put a T-14 3 spd. This is a friend of mine's '70 390. Report Post (1 of many 401 casting number) and some other string of Regardless of the casting number, any 401 head will work. In theory, this single block could be built as any 343-401 GEN-2 or GEN-3 engine. 60cc combustion chambers (commonly rounded to 51cc) for 10:1 compression on the 360/390/401. com friend says correct part/casting number is R4B-4488409. The pressure is good, about 40-50 when cold but as it warms up it drops down to around 5 or so at idle. Save Share Reply Quote Like. 64-79 and 87+ AMC/Jeep sixes use 1/2" head bolts, 1980-86 use 7/16" (calendar year, not model year) . I'll look at the numbers again, my first read was 8198851, which could be 3198951, as I couldn't tell if the "8's" were "8's" or "9's" and the first 8 could be a 3, especially given that no casting numbers started with 8. info from AMC Used parts buyers guide amxie8 . tufcj. Here are some comparison numbers for sbc and sbd . of factory AMC V8 heads, particularly the later ones? All I've been able to find is contradicting info, and only up to Big conclusion: AMC must have known something when they designed this port - it works real well! I've also had a sbc double hump head and a sbd 'J' head up on the machine, neither can touch an AMC - by a bunch! Here What year is a 2. Peterson 68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X AMC Fan Joined: Jul/02/2020 Location: illinois Status: Offline Points: 7 I think the "C" stands for the casting part number and "F" stands for finished (machined) part number. 9l engines in the later years but are the same AMC 360. They are a different shape than the originals. So I do not know if the manifolds were with the 304 and put on the 360 or if these are from the 360. 200 143 122 112 casting 3188558. I so happen to have my crank sitting right here fresh from the machine shop. AMC/Jeep 360's used single groove intake and single or 4 groove exhaust. Please let me know if anyone has some of these NOS 3198951 service blocks amc engine casting numbers . Quote amx2611. Send Private Message . The part numbers are not on the crank but a similar " casting" number are on all the cranks. 68/69 connecting rods are part number 319 1740. 5 Jeep block casting No 3239443, stamped No 406U18? Anybody know? :dunno: :???: http://street2mud. so if its the original valve cover this engine was made in november of 1975 or 1988. com/webfiles/AMC%20Engine%20codes. The casting number is next to the #1 rod journal. 72 and up rods are part number 321 5954 and have a 5. Post Reply It had a factory part number (448 8140? but that is from memory) and the specs as above and was labelled as a "factory hi po camshaft". zqle qplbbjxr azmna ycjg zjb rww gaec brrvi ctg vgo