Pontiac engine casting codes. The letter is the month of manufacture- A=Jan.

Pontiac engine casting codes. The date code by this number is F278 which equates to June 27th of 1968. I found a list of serial numbers that indicates Wilmington DE assembly, 1960. For an example: all the pertinent info you have is the X7 code. Please advise breaking down code and what information is represented and to be found here. Aug 17, 2015 · the gm block casting # 481988 was used on 400 engines from '67 -'78. What engine do I have? Do I have big valve heads? Pontiac made it easy to know what is sitting between the fenders of your Pontiac or on the ground at the local salvage yard. Carb code should 7042062. Comprehensive guide to identifying Pontiac block numbers and casting codes for accurate restoration and performance tuning. Search for Pontiac Engine Codes As You Go Thru Life DO A WHEELIE !!! You Searched For: 1045 Matches Found (displaying 1 to 25) Sep 23, 2006 · Ron's Pontiac Page: 1964 Engine Codes I have a Pontiac engine (in a car) with Edelbrock heads on it. Casting #9790071 1968 (late) and all of 1969, drilled and tapped for 4 bolt mains (but some only had 2-bolt caps) Sep 23, 2006 · Ron's Pontiac Page: 1970 Engine Codes Sep 23, 2006 · Ron's Pontiac Page: 1966 Engine Codes Oct 2, 2015 · PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 68-69 GTO Tempest & LeMans TECH > Engine block decoding- where is the date stamp? This code will tell you the year it was to be used. The partial VIN will only show the last few digits of the VIN of the car which On the Olds 403, on the drivers side of the block just below the heads located behind the power steering pump is the VIN number, and on the top of the engine behind the oil filler tube is the engine casting code. See Chart Below for actual codes. In 1973 Pontiac shows over 70 engine letter codes, they show 25 of those were used on the Lemans and GTO, the letter code YC is listed as one of the codes used on a GTO. Whatever your situation, this is a great time to build a Pontiac engine. All the PONTIAC engines codes from 1955 to 1981 To answer to visitors questions, here you can find all the pontiac engines codes, all car, all years, not only firebirds. My understanding is that the engine foundry usually started casting for the next model year around the June time frame. First is the date code, on top rear center, next to the distributor hole. Ton of info here at this website: Codes ?- First Generation Firebird (1967, 1968, 1969) Aug 29, 2024 · Casting #9786133 1967, 2 bolt mains, even used on some Ram Air engines. Feb 27, 2006 · To identify a pontiac engine: 1. Followed by a 1 or 2 digit number for the day of the Comprehensive guide to identifying Pontiac cylinder head ID numbers and decoding their applications. e. Often it isn't visible at first sight either because it may be hidden by rust, paint or air conditioning compressor support. To find where the Engine code/id can be found. The first question is the ability to distinguish between the two types of heads. Casting number is 9792968, which can be a '69 428 Nov 11, 2015 · The Block Casting number should be 481990 for 1972 YR block. The block casting number, 9790071, is for a 1968-1969 400 engine. Nov 5, 2009 · The engine casting code is 9790079. This code will tell you the year it was to be used. Engine Search Pontiac used the same codes on different year blocks. After 1967 the heads were open chamber heads. It'll probably be 7 numeric digits starting with "97". Starting in 1965 Pontiac began using a 2 digit Over the years Pontiac v8 Cylinder heads came in many specifications. . Jan 12, 2021 · Hi. Codes are entered, or rather "hit" on the front right of the cylinder block (passenger side), close to the cylinder head gasket plane. RA3 or Not? Correct? So, I believe what I need to be looking for is either: A. 11 Misc: Pontiac used the same codes on different year blocks. I have a strange block. The last digit will be the year. Casting #9790071 1968 (late) and all of 1969, drilled and tapped for 4 bolt mains (but some only had 2-bolt caps) Apr 20, 2018 · Also, your block casting date codes will be found there - a letter and 3 digits. Pontiac Casting Numbers Please see the attachments below for cylinder block and head casting numbers used on Pontiac engines. There is two Jun 30, 2015 · Google up various combinations of "Pontiac Engine Codes" and you should be able to find several sites that show you how to decode everything, along with graphics/photos of where to find the codes in various years. A=January B=February C=March, etc. The date code, L017, breaks down as follows: December 01, 1967. 2. Thanks, Charlie Explore GTO head casting codes and their applications for various models. May want to check by the #8 cylinder. The letter is the month, next 2 digits are the day and the last digit is the year. The casting code will help determine what the block is. Pontiac V8 Engine Factory Casting Number And Code Guide - 1955-1981 These guides will give you information regarding casting numbers, what suffix number goes with the head casting number, what exhaust manifold numbers go with these castings and so on. In. The car is an automatic so that makes sense. The 455 letter codes for 1974 were; Jan 19, 2017 · The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. The date code is a 3 or 4 digit code. The engine VIN matches the car's VIN. Well the engine casting number is 9778789 which equates to a 65 or 66 389. Learning how to identify and decode Pontiac engine blocks can save you a ton of money, time, and headaches. FULL 1968 YH 428 375 1968 WJ 428 390 1968 YK 428 390 1969 ZF 250 175 1969 ZC 250 175 1969 ZL 250 215 1969 ZH 250 230 1969 WC 350 265 1969 WP 350 265 1969 WM 350 265 Exhaust Manifolds Similarly to the intake manifolds, Pontiac exhaust manifolds also have codes cast in to them. To see where the block code and date code are Pontiac used the same codes on different year blocks. These numbers are crucial for identifying specific engine configurations and verifying whether the engine is original to the vehicle. The date code will show when it Aug 19, 2022 · How to interpret the date code (valid for date codes on cylinder heads also) Important note: The engine foundry would begin casting parts for the next model year in "about" mid-year (the exact month/day varied slightly from year to year), so for example a date code of J018 would indicate a block for model year 1969. However the block number is 9790071 which, according to wowmusclecars. Assume heads have already been identified and the date codes? The number you see is the Engine Unit Number and not related to the VIN. Hope this helps. Although it's a little puzzling for a date code that late in the year (August) to still be model year 1971. Perhaps your car came without an engine altogether. Casting number 9790071, with no engine code or VIN stamp on it. Before we get into further explanations of Casting Numbers, if you are trying to decipher the VIN plate on the Trucks Drivers Side Door Jamb, you can get that information on our History Page Here. com Pontiac Engine Specs Pontiac Engine Torque Specs Pontiac Cars (Body Types) Pontiac Blocks Cu. Next to the distributor hole there is a casting number that has a letter with 2 or 3 numbers. Sep 23, 2006 · This Page Last Updated on: Saturday, September 23, 2006 11:14 PMspan> Engine Codes & Production Figures Find here some figures that I found over the years, taken from different sources, I found they are pretty accurate. Oct 19, 2024 · The second engine casting code didn't show up, so it may be a later casting. Find info on Pontiac heads casting number and more. Aug 17, 2019 · A few days ago, I received an email from Chris Courter of Charlotte, North Carolina. Apr 1, 2010 · Quote: Pontiac engines have block code. Few centimeters below, near the timing cover, is a code The Pontiac Engine Pontiac Firing Order Pontiac V8 265, 301, 307*, 326, 350, 389, 400, 421, 428, 455 Firing Order These graphics courtesy of Boxwrench. Above the 2 digit code will be the motor unit number, which is either 6 or 7 digits. He was asking for help identifying a code-ZE 455 block that recently came into his possession. Check this site out for various locations of codes. Casting #9790071 1968 (early), 2 bolt mains. The time now is 06:08 AM. Pontiac made closed chambered heads until 1967. 02 2. Date code D088. Casting number "9790079" Engine code "694880 YJ" Date Mar 21, 2023 · I'm looking to buy a 1969 GTO and I'm checking the engine if its numbers matching. Together with the casting code and casting date you can determine where what the engine is. Jan 5, 2012 · You need three sets of codes for a positive id. 7H1 would be the correct Heads. Those are only in California engines which this engine is. Together with the casting code and cating date you can determine where what the engine is. It has '62' heads sitting on it. You can plug in the info you have and it will narrow your search. Below is a picture of the Edelbrock Round Port Jan 14, 2010 · Hank, The WU block is a 400 and was used on pontiac's b-bodies from late 67 thru 71 and was offered during those years with both the 2bbl and 4bbl. Thanks for all the help as this project moves forward. The block code was used to ID what application the engine was to be used for. Starting in 1965 Pontiac Apr 16, 2015 · The engine currently in your GTO may or may not be the original engine that was installed at the fac­tory. Pontiac Engine Codes What's the 2 letter engine code on the front of the motor? Sep 21, 2017 · Hello Friends, my father in law has asked me to try and sell a Pontiac 350 motor (turbo 350). In 1967 Pontiac made some open chamber heads (i. The first digit will be a letter. Dec 14, 2010 · The 0282800 number is the engine serial number. Intake Manifolds have casting codes on them as well and with the date code you can determine what engine it came on. original specs: 160/175 HP 8. Where to find the Casting Code: Casting codes for 1955 to 1963 are Pontiac Blocks Casting Information 1955-1963 Blocks up to 1963 have side of block casting numbers Up to 1963 have stud oiled heads Year CU IN Casting # 1955 287 518037 1956 316 521560 1957 347 523293 1958 370 528456 1959 389 532000 1960 389 536387 19 BACK For a more complete and up to date engine codes and other information, try my search page. B=Feb,etc. Taking into account that there is INDEED much disinformation as there is information, the quickest ID would have been the block casting "350" found on the block while disregarding the engine code which only added to Jun 30, 2017 · Below is a link to Wallace Racings engine code list, it's 99% complete & correct. Search for Pontiac Engine Unit Numbers (Pontiac Engine Serial Numbers) As You Go Thru Life DO A WHEELIE !!! Home EUN Input Form To see all the entries, just click on the Submit button with all the inputs blank. It's possible it might be a '76. Feb 13, 2009 · Reading some threads I decided to check out the numbers on my engine to ensure it is a 400cid, like I was told. Oct 3, 2024 · Can anyone confirm the year of this engine by the stamp shown in the photo? The characters appear to be: 460W 3750. Oct 24, 2024 · Pontiac engine identification numbers, including engine codes, block casting numbers, and date codes, help determine an engine’s originality, displacement, and production year. Casting numbers for pontiac are 6 or 7 digits. To differentiate them it will have to be determined what year the block is. A '66 engine with XE block code (this is a CA car), 9778789 casting code and a casting date of Jan to Feb 66 Is this correct? Jun 5, 2024 · Casting codes for 1968–81 appear on the ledge at the rear of the block behind cylinder eight. Selecting the right block for your 400 build can I have a pontiac motor, blk vin#29r120578,casting code block code#0264300 YH, 428 IS EMBOSSED ON THE SIDE OF THE BLOCK Aug 23, 2008 · The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. The other numbers you listed won't really help ID your engine, much. Thanks. You must find the date code at the back LH side of the block first. However, these codes were used over from year to year. Starting in 1965 Pontiac began using a 2 digit letter code. HOME If you know the code number, try my new Engine search These codes below may not be as accurate as my Engine Code Search page in link above. 94 1. you gotta have the the 2 letter code up front n casting date to ID a Pontiac engine. The 5 hole blocks will fit the pre 70 chassis. 061). Sep 23, 2006 · Ron's Pontiac Page: Stock Pontiac Head Specs Jul 28, 2008 · The casting number 485428 is for a 1973 455, the letter code YC shows it was a 4 bbl, 250 hp engine used with an automatic transmission. A list of block casting numbers is located < click here> PONTIAC BLOCK CODES '64-'79 Year CID HORSEPOWER Code 1964 326 280 HP 94x,970 389 230 HP 04L,05L,08R,09R 389 235 HP 22B 389 267 HP 11H,12H 389 283 HP 10A 389 303 HP 25K,26K,27P,28P 389 306 23B,29N 389 325 78X,79J 389 330 32B,34N,33-6 389 348 76X,77J 421 320 35B,38S,43N 421 350 44B,47S,49N 1965 326 250 WP,ZN 326 285 WR,YP 389 256 WA,WB,YA,YB 389 Feb 25, 2025 · In essence, the Pontiac head casting numbers are a code that helps enthusiasts, restorers, and mechanics understand the exact makeup of an engine’s cylinder head. The number stamped into the front (passenger side) of the block is 296736 YN. In 1959-60, as each engine was completed at the Pontiac assembly plant, a 1 or 2 character code was stamped on the block to identify the application for the engine. Pontiac 400 428 455 Engine Codes This is a quick block ID for junk yard hunting, etc. This casting number is usually on the RH side of the rear portion of the block - where the transmission bolts up. This photo shows where the block casting number and date code are located. Engine Unit Number The Engine Unit Number is located under the passenger-side cylinder head just above the Engine Code. Nov 13, 2020 · PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 70-73 Firebird & TA TECH > Casting 9799914 YS Block. They are located on usually on the number 1 intake runner by the thermostat. It'll be one alpha character followed by 3 numeric characters. One of the best is the Wallace site. There are no casting numbers close to yours for YR block. Oct 12, 2023 · Casting Codes All engine blocks have a casting code. Followed by a 1 or 2 digit number for the day of the month. Wallace Racing - Engine Code Charts Aug 19, 2022 · Hi all, I have located a 1970 400 long block and I’m trying to go through and decode the numbers, and one has me confused/concerned… can anyone provide some feedback, below is a photo of the number. Those 66 heads have the larger valves, and . You will find a set of a pair of letters designating Pontiac 400 428 455 Engine Casting NumbersService Replacement (SR) blocks do not always have a code stamped on the front of the engine. 5 all together. Muscle Car Parts-GM Auto Parts-Camaro Z28- Pontiac Judge GTO In 1959-60, as each engine was completed at the Pontiac assembly plant, a 1 or 2 character code was stamped on the block to identify the application for the engine. Last is the engine code Engine Code Chart. The engines were coded with many numbers and letters. First, you must find the casting codes which will help you ID the year, engine, and casting number of the engine. Pontiac Cylinder Head Search Interface Year: Engine: Select 301 326 350 389 400 421 428 455 Hp: Code: Valve: Select 1. Here they are: The matrix on the right is the Engine Casting Numbers and should prove to get you the ID, Make and Year of your Engine. SCROLL DOWN ! Feb 16, 2011 · I have been researching my 400 engine block as follows: Stamped Block code: WW Stamped Production code: 0719693 Casting # 9790071 Date Code: D309 Stamped VIN code 29X155150 Please correct me if I'm wrong on any of these, but WW is the 1969 RAIV 400 cid 370hp, built April 30 1969. The Casting codes for 1955 to 1963 will be found found on the passengers side of the block. Look on the back of the block behind the #8 cylinder for the casting number which should be 9790071. The casting codes for 1964 to 1967 will be found Sep 23, 2006 · Comprehensive guide to Pontiac engine production casting numbers for enthusiasts and restorers. Front of the engine has a YF May 27, 2012 · Pontiac 400 - Casting Number 500557 Pontiac - StreetAll times are GMT -4. For the classic muscle car enthusiasts among you, it could help with repairs or restoration work when you know the block casting code. They do, however, usually have a casting number. This is an original 1966 389 4 barrel car. The number 0577369 is probably the engine VIN. Andy's Auto Sport Learning Center Vehicle Specs GTO Engine Codes Jun 14, 2013 · The YH is the engine code that, along with the block casting number and the casting date, identifies the block as a 1970 Model Year high-compression 455 for full-size cars. Head Codes Pontiac heads have their casting codes cast on to the center exhaust ports. They can be quite confusing. Why? Because you can benefit from a level of after­market support for the Pontiac V-8 engine that is truly 67-69 ENGINES CODES THE BLOCK Identify an engine block is very simple. ( Z code) I see lots of Grand Prix’s, Tempest, and Catalina’s with that casting # and 2bolt mains. Also, 68 and May 12, 2009 · The k116 is Nov. Block Casting Number Pontiac Block Casting Number Aug 19, 2022 · How to interpret the date code (valid for date codes on cylinder heads also) Important note: The engine foundry would begin casting parts for the next model year in "about" mid-year (the exact month/day varied slightly from year to year), so for example a date code of J018 would indicate a block for model year 1969. It is 6 or 7 digits long and represents the sequential production number of the engine. There are many questions regarding the types of Edelbrock Aluminum Pontiac Heads. The info on this how-to page will attempt to show you the way to correctly determine what that engine in your garage, or in the junkyard, actually is. a '65 engine with YS block code, 9778789 casting code and a casting date of Sep to Dec '65 or B. It should match the last Sep 4, 2007 · PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 67-69 Firebird TECH > Ram Air III - what code/casting for the Firebird?? Apr 17, 2009 · The letter code YC was used in 1973 on the 455 and in 1974 on the 350, the casting number 485428 was the 455 casting number for 71, 72, 73 and 74. I see a couple RAIII engines in Firebird and GTO with that casting # and 4 bolt main caps. com, is a 1968 GTO HO. This casting all 1968 Ram Air. The "X" in Pontiac Engine Code, Block Casting Code, & Head Code Locations F-Bodys Anonymous 340 subscribers Subscribe This photo shows where the block casting number and date code are located. The casting number will ID the year of the block. Apr 20, 2018 · Also, your block casting date codes will be found there - a letter and 3 digits. Here at Butler Performance we try and give you the knowledge to distinguish the head types and assist you in selecting the correct head for your application. 3. Mar 19, 2025 · In this guide, we’ll walk you through how you too can find, decode, verify, and do a lookup on GM (General Motors) engine serial numbers for Chevy, Pontiac, Buick, Oldsmobile, Cadillac, and LS engines, among many others. Chart Pontiac Block Casting Information Nov 11, 2015 · The engine codes can be the most confusing form of ID as Pontiac used the same engine codes on different blocks over the years. 68 and 69 used the YS letter code and the same casting number. However, these codes were used for more than one year and could have different machining or even different main caps. Once you locate the casting code, you can find your block through a number of searchable databases. May 9, 2024 · Engine Codes Engine Block Codes Pontiac engines have block code. Here are 2examples: A249 code "XE" A = January - 24 is the 24th day - and 9 is 1969 The block is a 69 428. Without removing the heads, I'm trying to figure out what block this is Block casting date code is I108 (September 10th, 1968, which makes it a block for a 1969 production car). 1968/69 blocks carry this casting code (I found it on the passenger side of the block next to the #8 cylinder). 11, 1966. Feb 1, 2019 · After going through the Pontiac casting # book, 9799914 is a 1970 casting. 0 compression ratio 2 bbl carb Automatic cars only Cam # 555 Towards the bottom of the block below the Engine Code and Casting Code, you should see a partial VIN. The date code is located on the distributor pad. He described it as a typical number-485428 casting with 4-bolt main caps, an Engine Serial Number (or ESN) of 515897, a VIN stamp from a 1973 Firebird, and a cast date of June 14, 1972. Late in 1977 Pontiac produce 400 Jul 6, 2009 · Pontiac used the same two letter codes for various years, different displacements, and for different platforms. Starting in 1965 they were a two or three digit code. All blocks produced after 1970 have 3 holes plus the early 2 bolt set up. Search for Pontiac Engine Unit Numbers As You Go Thru Life DO A WHEELIE !!! You Searched For: 2243 Matches Found (displaying 1 to 25) everythings about PONTIAC firebird formula trans am. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. I surfed the Pontiac Hunters link you put up & noticed quite a few errors. Casting #9792506 1967 (May or later) and 1968, 4 bolt mains. May 27, 2012 · Pontiac 400 - Casting Number 500557 Pontiac - StreetAll times are GMT -4. The casting number is located on the back of the block on a ledge behind the #8 cylinder. 96 2. Together with the casting code and casting date you can determine what the engine is. Next is the block casting code. Jul 8, 2022 · According to the Wallace Racing site, 483677 + YC with #66 heads is a 71 325 HP 455 out of an automatic transmission car. I have not been able to find anything on these codes: On the back next to the date code is a D->N, and below it a 10 (see pic) - what is that D->N 10 Jan 16, 2013 · To correctly identify a Pontiac you need: Engine code (2 digits, alpha-numeric, stamped on the front of the block NEAR the partial VIN); date code (by the distributor) and block casting number (on bellhousing flange), both CAST "in". Note that these are the high performance manifolds only. Casting Codes Reply Quote Like 1971LemansWisc 337 posts · Joined 2021 #4 ·Oct 19, 2024 Wallace Racing - Engine Code Charts Both list as 1971 350 from Firebird (FB) 250 HP - one Manual one Automatic Reply Quote Like F FROGENGINE 10 posts · Joined 2024 #8 ·Dec 5 May 26, 2010 · Engine is now being worked & I've attached pictures of build codes found near distributor hole. May 7, 2015 · Now there are lots of online sites that will help to identify a Pontiac engine. The difference in the blocks are 68 had the 8 bolt water pump and 69 used the 11 bolt WP. The Pontiac Hunters list also does not list the cyl head (s) originally used on said engines by cyl head code. The letter is the month of manufacture- A=Jan. #9773155 block with a date code of J23=October 2, 1963 #9782611 block with a date code of F126=June 12, 1966 #485428 block with a date code of D083=April 8, 1973 All pre 1970 blocks have 2 motor mount bolt holts on each side. A list of block casting numbers is located < click here> 70-81 ENGINES CODES Identify a PONTIAC engine block is very simple, the code is entered, or rather "hit" on the front right of the cylinder block (when you're driving), close to the plane of the cylinder head gasket. Nov 18, 2020 · Engine Codes Pontiac engines have block code. Often it isn't visible at first glance either because it can be hidden by rust, paint or the air conditioning compressor support. On the rear passenger side of the block, "below" the head, next to where the transmission bolts up. The engine code is YZ. jata konov m7izh dlvn cux egvvv 3d6 z7ol fbbl piq