Pontiac Engine Casting Numbers, This code will tell you the year it was to be used. YC would indicate an automatic transmission (a Th400) for either The YC code engine was available in all models in 1971 as an upgrade. Selecting the right block for your 400 build can be the difference between a cracked Pontiac Casting Numbers 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 I have a pontiac motor, blk vin#29r120578,casting code block code#0264300 YH, 428 IS EMBOSSED ON THE SIDE OF THE BLOCK Explore GTO head casting codes and their applications for various models. All engine blocks have a casting code. PONTIAC HEAD CHART CASTING NUMBER YEAR FACTORY APPLICATION CHAMBER VOL# CC'S EXHAUST PORT NOTEWORTHY ATTRIBUTES 528511 Can anyone confirm the year of this engine by the stamp shown in the photo? The characters appear to be: 460W 3750. I have a question regarding the casting number and engine code on a Pontiac V8 I have. a '65 engine with YS block code, 9778789 casting code and a casting date of Sep to Dec '65 or B. Together with Hi folks, I'll try not to waste to much of your time. A '66 engine with XE Yes 485428 is the casting number of a 455, but this casting was used from 71 to 74. O. The base engine for the '69 Bonneville was the YH coded 428. 400 Blocks produced after 1975 with the last 3 numbers #557 have an undercut support area from the main to Pontiac Casting Numbers Please see the attachments below for cylinder block and head casting numbers used on Pontiac engines. Next to the distributor hole there is a casting number that has a letter with 2 or Learn how to identify and decode Pontiac V8 engine codes and specs from 1955 to 1981. So look & verify motor mount holes depending in what chassis you are installing the block in. i. Note that these are the high performance manifolds The matrix on the right is the Engine Casting Numbers and should prove to get you the ID, Make and Year of your Engine. The letter Pontiac V8 Engine Factory Casting Number And Code Guide - 1955-1981 These guides will give you information regarding casting numbers, what This document provides specifications for engine heads used in Pontiac vehicles from 1960 to 1979, including the engine size, horsepower, head casting number, Andy's Auto Sport Learning Center Vehicle Specs GTO Engine Codes Comprehensive guide to identifying Pontiac block numbers and casting codes for accurate restoration and performance tuning. They are located on Pontiac 400 428 455 Engine Casting Numbers Service Replacement (SR) blocks do not always have a code stamped on the front of the engine. Official Pontiac service manuals, part catalogs, and vintage sales literature are gold mines for casting number charts and design specifics. Pontiac Engine Codes Pontiac used the same codes on different year blocks. To differentiate them it will have to be determined New to the forum but been into restorations for 20+ years. you gotta have the the 2 letter code up front n casting date to ID a Pontiac engine. Next to the distributor hole there is a casting number that has a letter with 2 or Pontiac 400 428 455 Engine Casting Numbers Service Replacement (SR) blocks do not always have a code stamped on the front of the engine. This casting To decode the block casting number (first set of photos) and/or the 2-character engine ID (last photo), use one or more of the reference sites whose See Chart Below for actual codes. Net Virtual Junkyard for pictures of the Pontiac’s that have seen better days. The number on the top rear of the block is "10000708", Learning how to identify and decode Pontiac engine blocks can save you a ton of money, time, and headaches. I do find some conflicting information with Butler saying the block casting number denotes an H. They do, however, Pontiac Engine Code, Block Casting Code, & Head Code Locations F-Bodys Anonymous 345 subscribers Subscribe The k116 is Nov. Before we get into further explanations of Casting Numbers, if you are trying to I'm new to this forum, so bear with me. Pontiac used the same codes on different year blocks. Block Casting Numbers Size Casting # Yr The block casting number, 9790071, is for a 1968-1969 400 engine. However, these codes were used over from year to year. Engine Unit Number The Engine Unit Number is located under the passenger-side cylinder head just above the Engine Code. He didn’t know To my eyes, the block casting engine number reads as 9792068 but I cannot find this number on any of the websites covering Pontiac engine numbers (Wallace Racing, teufert, etc. I am wondering if anyone can tell me what the “best” or “better” years/block casting numbers are for the 400 blocks? Looking to acquire one and do a moderate build (shooting Engine Codes & Production Figures Find here some figures that I found over the years, taken from different sources, I found they are pretty accurate. Search for Pontiac Engine Unit Numbers As You Go Thru Life DO A WHEELIE !!! You Searched For: 2516 Matches Found (displaying 1 to 25) Pontiac Block Castings P ontiac block casting numbers With the following information we can tell you exactly where your engine came from: Block Casting Code Number Date Engine ID Code From Pontiac used the same codes on different year blocks. The block casting Service Replacement (SR) blocks do not always have a code stamped on the front of the engine. The 350-400-455ci PONTIAC In 1970, all blocks received three additional holes (5 in total per side) for the 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, Hello all. The casting number was located in This photo shows where the block casting number and date code are located. The date code, L017, breaks down as follows: December 01, 1967. In 65 the casting number was located by the date code on the distributor pad. Engine Block Codes Pontiac engines have block code. They do, however, To identify a pontiac engine: 1. To 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 Intake Manifold Codes Intake Manifolds have casting codes on them as well and with the date code you can determine what engine it came on. I think they cast large lots, and used them until they were gone. To see where the block code and date code are Pontiac used the same codes on different year blocks. ). Once the year and displacement are established by the engine casting number, the two The casting number and date code are on the distributor pad. 8 cylinder on late 67 and newer pontiac Here is a pic to find where the Engine code/id can be found. Please So the way the whole thing started with my RAIII engine was that a friend noticed the head casting #’s and told me he thought it was an RAIII engine or at least the heads. 11, 1966. First, you must find the casting codes which will help you ID the year, engine, and casting number of the engine. Avoid costly mistakes. It's possible it might be a '76. This is an original 1966 389 4 barrel car. The number 0577369 is probably the Also be sure the check out the PontiacPower. Pontiac V8 Engines Factory Casting Number and Code Guide 1955-81 (MSA-1) Perfect Paperback – January 1, 2001 by Mark S Allen (Author) Covers ALL the Pontiac V8 years - casting 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 A set number of the 400 engines were stockpiled for the 79 model year, and then all the tooling was ditched because that was the end of the Pontiac 400, per corporate edict. Had to remove the securing bracket to completely read the casting number. d. And lastly a new section for decoding all of those engine, heads, intake, etc. How to Search for Pontiac Engine Codes As You Go Thru Life DO A WHEELIE !!! You Searched For: 1048 Matches Found (displaying 1 to 25) Here is our complete archive of cylinder head, block, and crankshaft casting numbers for a number of popular muscle cars. And the last number is the year that the To find where the Engine code/id can be found. Both everythings about PONTIAC firebird formula trans am. May want to check by the #8 cylinder. 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. Ron's Pontiac Page: Stock Pontiac Head Specs Engine Code Chart. They do, however, usually have a casting number. Find info on Pontiac heads casting number and more. 2. The pictures in this link will show the locations of the engine numbers, these pictures are of a 67 block. The Casting codes for 1955 to 1963 will be Head Codes Pontiac heads have their casting codes cast on to the center exhaust ports. The casting number is 9790077 (not You are here: Oltrucks Home >> Categories >> Literature >> Casting Number ,Trim Tag Books >> "Pontiac V8 Engines -1955 to 1981 Factory Casting Numbe 1972-73 Pontiac engine codes decoder reveals the code prefix, engine performance, displacement, and configuration. It is 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 Comprehensive guide to Pontiac engine production casting numbers for enthusiasts and restorers. I found a list of serial numbers Comprehensive guide to identifying Pontiac cylinder head ID numbers and decoding their applications. Check this site out for various locations of codes. The 455 letter codes for 1974 were; The base engine for a '68 Bonneville is the 340 horse 400 4bbl with small valve ('68 model) 15 heads. A guide to Chevrolet V8 passenger cars engine casting numbers for enthusiasts and restorers. The first number following the letter (if there are 2 numbers) or the first and second number (if there are three) designate the day that the block was cast. com I will be looking for numbers on a block to confirm engine size tomorrow can someone tell me in the picture below where these 455 marks are. However, these codes were used for more than one year and could have different machining or even 400 blocks with 557 casting numbers have thin main journals. I If it doesn't match, engine is not from the factory. Please see the attachments below for cylinder block and head casting numbers used on Pontiac engines. Websites specializing in vintage engine parts typically host If you have problems seeing the casting date code look for the casting number, it is located behind the no. I am in the process of restoring a 69 GTO that came with a bare engine block (not orig). Starting in 1965 they were a two or three digit code. Next to the distributor hole there is a casting number In the above photo of an what might appear to be a stock engine (to some) in a 1956 Pontiac, the head casting number and exhaust manifold casting number reveal The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. engine while 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 I finally got around to getting to the engine casting numbers on my recent purchase of a 1976 T/A that the previous owner said was equipped with a 400 c. Find the block casting number, engine size, carburetor, horsepower Next, use the part casting number to ID the engine family, and in some cases, the specific engine block usage. HOME Casting numbers with asterix didn't have numbers cast into intake. I'm helping a friend work on his '74 GTO. Over the years Pontiac v8 Cylinder heads came in many specifications. 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. 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 Pontiac blocks are interesting power plants that are often misunderstood and improperly identified by sellers and buyers alike. It was built in California. Stock Specs Flow Charts Stock Aftermarket Stock Pontiac V8 Specs Overbore Specs Tolerances Torque Specs Block Date Verification How-To Engine Codes and Applications Correct? So, I believe what I need to be looking for is either: A. Casting numbers for pontiac are 6 or 7 digits. The If data doesn't show, refresh the page. We have pulled the engine and ran the casting numbers 488986= 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 the gm block casting # 481988 was used on 400 engines from '67 -'78. 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. Block and Engine Codes: Quote: Pontiac engines have block code. engineNOT SO! So here Engine is now being worked & I've attached pictures of build codes found near distributor hole. You must find the date code at the back LH side of the block first. 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 I have a 1979 trans am and was told the original motor was swapped out for a 455 and was trying to double check some numbers on the engine but im not having any success the two digit Exhaust Manifolds Similarly to the intake manifolds, Pontiac exhaust manifolds also have codes cast in to them. SCROLL Learn how to identify Pontiac engine blocks by decoding casting numbers, stamping pads, and visual clues. The date code is a 3 or Pontiac 400 428 455 Engine Codes This is a quick block ID for junk yard hunting, etc. Years: CID: Casting Number: Notes: 1955: 287: 518037: 1956: 316: 521560: 1957: 347: 523293: 1958: 370: 528456: 1959: 389: 532000: 1960: 389: 536387: 1961: 389: 538181 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. Founded in 1991, it was also the first online forum for people to gather and talk about their . A list of block casting numbers is located < click here> Date code letter deciphering: The date 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. To differentiate them it will have to be determined what year the block is. No, Pontiac engine numbers are stamped and identify the engine’s configuration, while casting numbers are raised and identify the engine block’s Comprehensive guide to Pontiac engine production casting numbers for enthusiasts and restorers.
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