Casting number is 641087-L-W11A-N1-CR-N2. I was hoping someone could tell me what this engine came from and the approximate date that it was built. The engine number is MD 88547. I know the serial number on my L134 engine in my 1948 truck matches the VIN on the firewall plate and the title. Willys L134 Engine Serial Numbers Lookup References [edit] Willys L134 Parts ^ a b 'Engine Specs - Jeep Engines - Hurricane F-Head 134 I4'. “Selling a circa 1949 Willys Jeep L134 engine. The later (Dec51/MAR52) style rear block flange on the M38 641087 casting was exactly the same as the later (Dec51/MAR52) CJ3A 641087 casting. Thanks for the info. It's also a horrible investment of money. Casting number is 641087-L-W11A-N1-CR-N2. settle for a bastardized one. Thanx. There were at least 4 versions of the engine in your time frame. Engine turns … The remaining five (5) digits on earlier models, or six (6) digits on post 1972 models, indicate the Sequential Serial Number. I'm in Templeton MA. See Details, 4-134 L Engine illustration shown for reference - click here to shop for these parts by interactive diagram, Need engine parts for your vintage Willys or Jeep? IDENTIFICATION PLATES – 1945 - 1962 WILLYS-OVERLAND AND WILLYS MOTORS VEHICLES SERIAL NUMBER TAGS, WILLYS & JEEP BRANDED VEHICLES The scope of the KFOCI HANDBOOK will include various Willys and Jeep-branded vehicles built between the 1945 and 1962 model years. But the previous owner(s) did a lot of work to make it quite roadworthy. And since the Willys four-cylinder flathead is the heart of the Jeep, it only makes sense to make new blocks available. Furthermore the color code may also be of little help in identification of a heads compression ratio. The first group of digits identify Chassis Code, Body Style, Special Model Code, Drive Code and Engines. The casting is good and no cracks are visible, and will clean up well. Truth be told, old flathead Jeep engines are getting hard to find. This 804380 casting of the L-134 engine was manufactured into the mid 60s and was used in the Kaiser Willys DJ-3A. I suspect this is where your engine began its life. Clean the area well then lightly sand … This came out of a 1949 CJ-3A so has the proper front plate with the mounting flange bent forward on the drivers side (to accommodate the fuel pump). Serial number starts with 3J but can be used in other Jeeps. Someone did coat the cylinder bores with grease when they packed it away. It was also used in the Willys 473 and 475 pickups, wagons, and sedan deliveries. JavaScript seems to be disabled in your browser. This video shows the assembly of the Piston Skirts, Connecting Rods, And Bearings for the G503 Willys MB And Ford GPW L134 Flat Head Engine. The engine number was located at the front of the engine block on the water pump boss. Someone did coat the cylinder bores with grease when they packed it away. Has casting flaw or hairline crack under distributor. ... More important than the engine identification is the JEEP model and vintage. Therefore a distributor from a 1942 Willys MB can be installed in a 1968 CJ-5 and the waterproof distributor from an M38A1 can be installed in a 1946 Jeepster and so on. There is a Pre WWII Willys car called a 441. Willys 641087 M38/MC Block. I have an Alleged CJ2A but its so cobbled together from other vehicles (even a fiberglass tub) I am not sure what it really is, but it runs and drives. Mike, thanks for the greeting. Need engine parts for your vintage Willys or Jeep? These blocks (other than having "CJ2A-" instead of "MB-") are identical to the MB blocks. Retrieved 21 August 2014. Thus, Jeep owners must turn to the engine's seven-digit casting, or engine, numbers to find out what kind of engine they have. When these outside concerns wanted engines, Willys sold them from existing inventory. Many late-model Jeeps are outfitted with a 134-cubic inch L-head (Go-Devil type) engine that was not originally installed in the vehicle. Thanks. There is old OD Green paint on the manifold. Since you originally asked about date, you should be able to find an assembly date (when the block was first made into an engine) stamped (not cast) on the bottom face of the block. Any help is appreciated. Identification Serial numbers are located on the left front of the frame and on the back of the bumper. Casting numbers of 638632 (MB mold) and the 641087 casting. The serial number is stamped on the right of the block, and the timing is gear driven. Let's take a look at the Willys Jeep engine that changed the world. Archived from the original on 16 November 2011. kaiser L134 engine/heads were sold as replacements for willys L134 thru sears etc ... # 641087 is the block casting part number only. The Willys engine serial numbers do NOT match the jeep's data plate serial numbers, nor the frame serial numbers, even if it is the original factory installed engine that is still in the vehicle. Baeta.org. Factory compression ratios ranged from 5.7 to 1 for the Model 48 (pre 1939 pattern) through to 6.48 & 6.81 & 7 to 1 on the improved 1939 and later L134 (L Head, 134 cu inch) engines peaking with 7.4 to 1 on the F134 (F Head, Overhead Inlet, Side Exhaust, 134 cu inch) engine. The Willys F4-134 Hurricane was an inline-4 piston engine and powered the famous Jeep CJ in the CJ-3B, CJ-5, and CJ-6 models. Sorry Bruce but I am afraid those Willys part numbers may be of little use in identification of the head. Hello All. The casting numbers on an engine or block can be used to help determine what engine your … This is because Willys engines were taken out of the production line as needed and put into portable power generators, searchlight units, and welders. These numbers, not to be mistaken for the engine's serial numbers that are stamped onto the metal, are part of the engine casting. These distributors are driven by the engine oil pump by a key at the lower end of the distributor drive shaft. I got two heads marked Willy's and jeep. Unless I am seeing something wrong that is an Early Gear drive engine so a late 1946 The head is from an earlier engine most likely a MB It would have had serial numbers stamped on the pad behind the water pump. Wikipedia says the 1948 truck should get the L134, which would make it something of … Makes me want to get off at exit 17 and run up to the Piggly Wiggly... Why I keep coming back... there appears no end to what the folks here collectively know :). Anyway, wanted to say welcome...where in MA, if you don't mind me asking? You can only see this when the oil pan is removed, of course. And the casting number on both was 641087. DECODING THE VEHICLE IDENTIFICATION NUMBER The Vehicle Serial Number consists of two groups of digits. All parts have been sitting in a wooden box inside an old house for many years. 1971 And Prior FREE SHIPPING ON ONLINE ORDERS OVER $98.00 ENGINE SPECS: Type: L-Head: Number of Cylinders: 4: Bore: 3 1/8" Stroke: 4 3/8" Piston Displacement: Other three holes have serviceable threads. I will go through the parts and see if is rebuildable or not. Willys 641087 CJ3A Block. Drive Train Engine This shaft is identical on every 4-134 engine distributor. Well, the engine rebuild came to a screeching halt. The M38 engine bolted to the bell housing in 1950 the same way the CJ3A and CJ2A engine bolted to the bell housing. An Americar. I am new to these engines, and I don't have a jeep to put it in yet, but I couldn't let it go for scrap. The motor I have is a WWII MB engine! It has an F134 engine in it that I have been told is a military engine. All parts have been sitting in a wooden box inside an old house for many years. Get the best deals for l 134 willys engine at eBay.com. The block casting number is 807895. ( 349368 ) Cylinder Head Stud for Willys Jeep L-134 CI Flathead 4 Cylinder Engine, 1941-1961 Models by Crown Automotive $3.95 ( 948137K ) Timing Chain Gear Kit for 1946-1971 Willys Jeep L-134 or F-134 4 Cylinder Engines by Crown Automotive New 4 Cylinder Engine Bare Block Fits 41-53 Jeep & Willys with 4-134 L engine Item # 641145 $1,699.00 Call for details Spark Plug Wire Clip Set (4-piece) Fits 50 … What numbers and letter are cast on the driver's side down low near the rear? Willy 804380 M38/MC Block. I have never found any stampings on the heads that are useful for identification of a specific compression ratio. I got two heads marked Willy's and jeep. The Vintage Jeep Barn: CJ-5 Description The CJ-5 was produced from 1955 through 1983. CJ-3B Serial Number and Engine Number List The list of Jeeps on this page includes Willys Jeeps with serial numbers in the normal series (with prefixes 453GB2, 453GC2, 454GB2, OB54, 57348 or 8105). There was a L6-148, L6-161 and F6-161 Willys engine but I believe the L6-161 was only used in Willys passenger cars and perhaps the 2WD Station Wagon (maybe not domestically?). We have a great online selection at the lowest prices with Fast & Free shipping on many items! (notthat couldn't have been swapped). Serial number on block looks like 3J31507. “Willys Jeep CJ3A engine as pictured. Engine serials numbers for the CJ-2A started out being stamped on the side on the block like the MB. At some point this changed. You must have JavaScript enabled in your browser to utilize the functionality of this website. Search Engine parts by Category or by Diagram, * Learn more about the 4-134 L engine from the Service Manual for 41-45 MB, GPW, © 2021 KaiserWillys Auto Supply LLC All Rights Reserved, FREE SHIPPING ON ONLINE ORDERS OVER $98.00, click here to shop for these parts by interactive diagram, Diameter (near bottom of skirt; right angle to pin). Could be used in other models by swapping out the front plate (or making an adapter). I am new to this forum and new to jeeps. ^ a b Brown, Arch … I don't have much data on 4SW prefix engines but I'd say it is a 1949 engine, or perhaps a 1950 model year. Willys Jeep Truck 1947–1964 - Similar to the Willys Jeep Wagon, Wheel base is 118", Engines L4-134 Go-Devil, F4-134 Hurricane, 6-226 Super Hurricane I6, 1950-64 V-Shaped Front Grille. I am new to these engines, and I don't have a jeep to put it in yet, but I couldn't let it go for scrap. Fits 4 cylinder Willys Industrial L134 cu in engines … Is there a link to all this serial number and block casting number info? I'm just looking for a way to date the later engines, like the one in my 1950- 53 pickup with a 5 bar grill and 6 226 engine. Mine is located on the right side of the main seal (at the back).