pontiac 455 engine codes

We'll help you figure out what's causing this. Pontiac Cylinder Head ID Numbers Patterson Coachworks Pontiac 455 V8, Firing Order and Information - Engine Facts.com While no driveability issues should occur, you may notice these problems. Thanks alot for the help guys I appreciate it alot. The only time you would need to worry is if the leak is in the fuel tank. Pontiac 400 428 455 Engine Casting Numbers - Patterson Coachworks Torque is the main factor with these engines, as they are torque monsters and not built for high rpm use. Royal Pontiac of Royal Oak, Michigan, went further in its effort to stay ahead of its competitors by installing even more powerful 428 engines, which are found in the Bonneville/Catalina and Grand Prix models. I had a 63 Pontiac LeMans Sport 326 for a while, and I think the name goes back to 61. Though all Pontiac engines featured lowered compression to the tune of 8.5:1 or less, engineers had something up their sleeve with the 455 HO. #GirlDad #SaveTheManuals, P0455 Engine Code Explained: Causes, Symptoms & How To Fix It, You can learn everything there is to know about evaporative emission control (EVAP) systems by reading, Were here to help you simplify car care and save, so this post may contain. If youve followed the steps above and are still experiencing a lean engine condition and code P0455, please contact the FIXD Mechanic Hotline if youre a FIXD Premium subscriber or find a RepairPal certified shop near you to get the right repairs at a fair price. There even was a sporty GT package to create the GT-37, which played the dual role of cosmetic supercar (due to its standard 350 two-barrel) and Road Runner-fighter (due to the available 400). Even if you immediately get worried about the P0455 code, theres probably nothing major to be troubled about. #GirlDad #SaveTheManuals. The Pontiac engine unit number is an important identifier for your Pontiac engine. A forum community dedicated to hot rod owners and enthusiasts. Also what size are the the primary tubes on your headers. Cost Range: {{formatMoney(costEstimate.lowEstimate)}} - {{formatMoney(costEstimate.highEstimate)}}. In some rare cases, it may have nothing to do with the EVAP system. Work in Progress. In 1970, General Motors released the Pontiac 455, a large block engine. Pontiac 400 428 455 Engine Codes Patterson Coachworks This is a quick block ID for junk yard hunting, etc. Should I just keep the 400 in it and sell the 455 or keep it on the side and save me some work of swapping. Because you are so focused on the EVAP system leaking, you could miss the simple problem of having a defective gas cap. Inspect your gas cap to see if it is loose or damaged. As I stated earlier 455's are torque engines, maximum rpm's should be kept to 5500 or below. WIP: 1949 Chevrolet Styleline Special Sport Coupe. Most all the parts on the 400 one day can be installed on the 455 . We don't have data for this code for your car. P0455 Trouble Code - AutoZone Auto Parts Contact either Crower Cams or Bullet Cams (maybe misspelled could be Bullit) for a recommendation. LeMans was, like Tempest, a really old name for Pontiac. Learning how to identify and decode Pontiac engine blocks can save you a ton of money, time, and headaches. I know it had 360 HP but thats all. Tin Indian Performance GTO VIN Decoding It is important to complete the entire diagnostic process when diagnosing P0455. It is usually stamped into the metal and will have several letters and numbers. But please dont think there is a strong American bias because foreign weirdness is never far from his heart. The 455 High Output engine had improved cylinder heads as well as better intake and exhaust ports while the Super Duty, made in 1973, was able to produce 290 horsepower in spite of more strict emissions standards. The engine code provides information about the engine type, size, and manufacturing date. They do, however, usually have a casting number. to help you do just that. Classical Pontiac Engine Codes Rodders and street enthusiasts have also loved the 400 because of its size, power, and durability. Anyway, me and my pup lived out of that car-literally. In 1970, Pontiac introduced a mid-year curiosity called T-37. A list of block casting numbers is located < click here> Date code letter deciphering: The date code is 4 digits. Thanks for any information! Something like G141, which would be July 14, 1971. With that said, there are some problems, such as a defective gas tank, that would lead to more alarm. This is usually indicative of a loose, broken, or missing gas cap. Pontiac 455 YH code. This number can help you determine the year, displacement, and other features of the engine block. In alot of cases 455's don't need alot of cam to perform, and it is easy to go overboard. On blocks produced in 1970 and after, you will find 350, 400, or 455 stamped towards the left side of the front of the block. Save my name, email, and website in this browser for the next time I comment. When I left home, I traveled the west with my dog working day labor jobs, bouncing from city to city and state to state. However, it should be noted that damage to the gas cap or deterioration of its components is not always noticeable. In 1968 Oldsmobile debuted the Rocket 455, an engine that was part of a family of 3 (with 400 and 425 cubic inch engines sharing a similar architecture). P0440 Code Meaning, Symptoms, Causes (& How to Fix it), P0441 Code Meaning, Causes, Symptoms (& How To Fix), P0442 Code Meaning, Symptoms, Causes (& How to Fix it), P0446 Code Meaning, Causes, Symptoms (& How To Fix), P0449 Code Meaning, Causes, Symptoms (& How To Fix). The Pontiac 400 has a smaller bore size and therefore produces less power and torque. Bittersweet memories of my T-37. The VIN number for a 1991 Pontiac is located on the drivers side doorjamb, under the windshield, near the firewall, or in the steering column. This engine has been designed to combine modern engineering with the classic muscle of the Pontiac line. Tools/parts needed (our top picks from Amazon): Use FIXD to scan your vehicle to verify P0455 is the only code present. Magnus is the owner and main author of Mechanicbase. We'll help you figure out what's causing this. Popular Engine Codes po420 code po172 code po0171 code po128 code po300 code po456 code po430 code po442 code po455 code po113 code. Gas caps are relatively inexpensive and are often the fix for code P0455. Certified Automotive Diagnostic Technician. However, the ECM occasionally performs leak tests to ensure the evaporative emission control system is working properly when the vehicle is turned off. The stock cam is likely an 067. Engine Unit Number The letter is the month, next 2 digits are the day and the last digit is the year. Muscle Car Campy shows us a Poncho with an LS engine just not "that" one. Firebird GTO Spotlight Numbers Casting Codes Engine Codes Head Codes Exhaust Manifold Codes Intake Manifold Codes Search for: Intake Manifold Codes Home/Numbers/Intake Manifold Codes Intake Manifold CodesFred Schramm2020-06-10T22:36:43-05:00 I had what they called a chauffeurs license back then, so I had been driving a Ford F-350 based delivery van for a local thrift store. If the fuel cap didnt fix it, perform an EVAP system leak check. The GTO was the most popular of these models, as it was the most powerful and sporty of the bunch. I beat one of thouse LT1 Ram air new trans ams . It is important to have the engine code when ordering parts for the Pontiac. Inspect the purge volume control valve. The 400 in the car now has pistons with a comp. Engine Code: D = 250 1-bbl L6 110 hp M = 350 2-bbl V8 160 hp . Thanks again! Diagnose and fix your check engine light yourself See what your engine code means in plain English Get the most likely repair and cost Access our Mechanic Hotline Do . The purpose of this system is to prevent fuel vapors from escaping into the environment. P0455 Pontiac Code - OBD2-OBDII Engine Light Trouble Codes Definitions Additionally, Pontiac enthusiasts may find the unit number useful for tracking engine production numbers or for verifying the authenticity of an engine. Thanks. P0455 Engine Code Explained: Causes, Symptoms & How To - Fixd App Home More Engine Specifications 1970 - 1971 with 4 Barrel Carb Max Brake Horsepower: 325 @ 4400 rpm Restricted Duty The SD-455 was originally scheduled to be offered in several Pontiac models, including the Grand Prix and Le Mans/GTO. To end your confusion, Ive put together this handy guide revealing the meaning, symptoms, and causes of the P0455 trouble code. They throw me out of the track for all most knocking down the starting tree . Pontiac 455 YH code | Hot Rod Forum Diagnose and fix your engine check engine light yourself with FIXD! I Had one in a 1977 T/A with a 400 and a early GTO intake and Q Jet . Together with the casting code and casting date you can determine where what the engine is. Is Pontiac 455 And 400 The Same Block? Copyright 2023 Mechanic Base. Another 122 A-bodies were built with the same engine. The Fora platform includes forum software by XenForo. The engine code can be used to determine the car's make, model, and year, as well as the engine size and type. These shops can not only help you figure out whats going wrong before you waste time and money on the wrong parts, but they also offer a minimum 12-month, 12,000-mile warranty and stand behind all their estimates with guaranteed fair pricing. You may not believe this but you would benefit more if you would try to locate a pair of 6X-4 heads as these will bring your compression to around 9.5:1 and the port configuration is some of the best Pontiac ever produced. Lead Writer Diego Rosenberg is a native of Wilmington, Delaware and Princeton, New Jersey, giving him plenty of exposure to the charms of Carlisle and Englishtown. Pontiac block identification numbers are a great way to identify a Pontiac engine block. Pontiac engine codes can be invaluable to technicians when diagnosing and repairing Pontiac vehicles, and are an essential part of any professional service. If the scanner reveals the P0445 code, you may be more confused than you were to begin with. The blocks in all Pontiac V-8 models from the 287 to the 455 are the same size and weight, making it more difficult to identify the engine displacements produced from 1955 to79. For a street engine, I would keep the 455 . The 400 is a great balance between power, efficiency, and affordability because of its smaller diameter bearings, smaller main journal bore, and ease of modification. Hopefully I don't run shorton cash to fix it up and have to sell the 455, I'll try and keep that in my garage. This a very desirable engine and very hard to come by. Its important to evaluate all trouble codes in a bunch. The Pontiac V8 engine is one of General Motors family of 90 V8 overhead valve engines manufactured from 1955 to 1981. DOHC Vs. SOHC Differences and Which Is Better? The 455 responds quite well to modifications and are monsters when properly built and tuned and are pump gas compatable with compression ratios of around 9.5:1. Exclusive Member of Mediavine Home. Examine the charcoal canister for cracks or damage. How To Interpret The 1969 Pontiac 428 HO Engine Codes 1976 Engine Codes - Ron's Pontiac Page (Buyers Guide), USAA Car Loan: Rates for New and Used Cars (2023 Guide), Understanding JG Wentworth Personal Loan Reviews, how to quickly diagnose your check engine light, Best & Worst Years of Chevrolet Traverse Graphs & Owner Surveys, Best & Worst Years of Toyota 4Runner Graphs & Owner Surveys, Best & Worst Years of GMC Acadia Graphs & Owner Surveys, Best & Worst Years of Ford Escape Graphs & Owner Surveys, Best & Worst Years of Jeep Wrangler Graphs & Owner Surveys, Best & Worst Years of Buick Enclave Graphs & Owner Surveys, Best & Worst Years of Jeep Grand Cherokee- Graphs & Owner Surveys, Missing, defective, damaged, or loose gas cap (*most Common), Faulty or stuck EVAP purge volume control valve. Thanks for the opinions and info guys I appreciate it alot, I think I'll see exactly what the 400 has and what it is and if its good just keep that in the car, since the car is just going to be driven around towns and brought to some shows. For this reason, I always recommend walking through all of the diagnostic steps to find the source of the fault. 1971 Engine Codes Code: Application: Displacement: Compression: Horsepower: Transmission: Heads: Camshaft: Carb: WC: HO 4 Bolt. Put in new leak detection pump $150-$450. Pontiac V8 Engine Codes and Specs - Wow Muscle Cars. A Site for Muscle Do repairs yourself and save $1000s. The 455 is stock and I wouldn't be able to do much with it yet because I still need to paint the car and have body work done to the car so it would remain pretty much stock. The later 400s (75 and later) were thin in the main webbing, but the earlier 400s would make the strongest race block. No. I used to tell people (since nobody had ever seen one), that is was a hot rod version of a LeMans! I actually thought it was, being young and dumb. See Chart Below for actual codes. These codes are located on the engine itself, or on the vehicles Vehicle Identification Number (VIN) sticker, and can be used to help determine the exact specifications of the engine, such as the type of fuel injection, the type of oil pan and pan gasket, the type of camshaft, and more. The Pietro Astra V8 engine has a cast-iron block and head, as well as two valves per cylinder. If the EVAP system does not maintain the pressure, the ECM recognizes an evaporative emission control leak. To do this, pinch off the vent tube to the EVAP Vent Control Valve. They had been offering me a full time job for weeks, so I decided to take it, got a motel room across from the Mormon Temple that rented by the week, and finally started getting my sh** together. During the leak test, the ECM closes the vent control valve to create a sealed EVAP system. All were stump-pulling torque monsters, but which has the potential to make the most power? If it is paired with P0441, P0440 and/or P0456, there is most likely a solenoid failure or a more complex EVAP leak. For each possible repair, the estimated cost of repair includes the cost of the relevant parts and the cost of labor required to make the repair. In those days all these states had govt run day labor places where you could go in the morning, they would call out the job, and you would raise your hand if it was something you were interested in and the employer would pay you at the end of the day. This casting number is usually on the RH side of the rear portion of the block - where the transmission bolts up. They are also designed to provide superior cooling, reducing the engine temperature and allowing it to run more efficiently. I found a 64 coded head, would that be worth it for me or no? The easiest mistake you can make is to overlook the obvious. If your gas cap is loose, tighten it and clear the code. If it is a 70 block then it should be a four bolt main as 70 was the only year that Pontiac produced the 455 with four bolt main journals. All stock. Though long overshadowed by high-compression engines, the 1971 455 HO (and the nearly identical 1972 version) has come into its own as being one of the ultimate street engines of the . The 15 heads are the small valve versions, 1.96 intake valves instead of the casting 64's which are the big valve heads, 2.11 intakes. I bought this car with a 400 block that the guy told me was a 76( but he was wrong on the year of the 455 he sold me so who knows) and I bought the 455 with the car which I was told it was a 1972 YH, obviously it wasn'tthank god. Pontiac also allowed any engine to be installed, meaning the 455 (previously only available for the GTO) was now available. Read what he has written and follow his and other builders recommandations. Otherwise, here are some basic steps to follow. Because the system is so sophisticated, there are numerous parts that can fail and lead to a leak. P0455 Evaporative Emission Control System (EVAP) Large Leak Detected. The rear is 3.73. If you cant have it fixed right away, you may be okay to wait for a short time. 501hp 455 Pontiac Engine Indian Uprising- Car - MotorTrend: New Cars its not that large but it has good deration . Using the live data function of the FIXD sensor and app allows you to read and analyze fuel trims to properly diagnose a P0455 code. I thought he was going to arrest me or beat me up, but he just told me to find a place to stay or well give you a place to stay. The P0455 trouble code is caused by anything that would lead to a leak in the evaporative emission control (EVAP) system. The emissions are higher than they should be, and the car could fail a mandatory test. Pontiac Trans Am SD-455: Did Pontiac Save its Best Muscle - MotorTrend P0445 And more Many of these EVAP trouble codes are from a series of sensors that measure different areas for air leaks. I never owned a Pontiac before so these engines are new to me. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. We've partnered with RepairPal to recommend trustworthy shops in your area. It has long been a favorite of engine builders due to its relative ease of modification. It will have three or, usually, four digits starting with a letter. The country of origin, manufacturer, vehicle model year, and assembly plant can be guessed using the 17 digits. This code will tell you the year it was to be used. Pontiac engine codes are a set of codes that can be used to identify the specific model, year, and type of Pontiac engine in a particular vehicle. The flow of the gas vapors from the charcoal canister to the engine air intake is controlled by a purge valve. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. A Bugatti Chiron SS is followed by a Koenigsegg Regera with 1,479hp, and a McLaren SLR McLaren is rounded out the list. Lifelong automotive enthusiast with a soft spot for offroading. Both engines have unique characteristics that make them suitable for different applications. Anyone know what would be a good cam to use to get some serious power? Dont have a FIXD Sensor yet? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Award-winning online automotive magazine with over 400,000 monthly readers. When it comes to understanding how your car performs, there is a distinction between the Horsepower (HP) and Brake Horsepower (BHP). All engine blocks have a casting code. The 400 engine, which is a popular choice for muscle cars and drag racers, can be modified for increased power and torque with relatively little modification. Pontiac used two-letter engine codes in different years in various cars. 2023 FIXD, Inc. All Rights Reserved.Exclusive Member of Mediavine Home. Did they not put the beauty rims on because they would damage the paint on the rims? The complexity of the multiple block codes and date codes combined resulted in a number of overlaps over time. Pontiac V8 Cylinder Heads - Casting numbers and Specs - WOW Muscle Cars Pontiac engine blocks are typically made from high-strength aluminum or cast iron and are designed for increased longevity and reliability. The only thing it has is a Offenhauser Intake and Holly carb with headers. In the case of P0455, it is a very large leak. The casting for the new model year started on the first of July, so this would have a 72 engine. I was thinking about replacing the 1976 400 block I have in my firebird with this motor since I purchased it with the car. Low An EVAP leak isnt normally a big deal because it wont lead to driveability concerns. Together with the casting code and casting date you can determine what the engine is. Pontiac 400 428 455 Engine Codes; Pontiac 400 428 455 Engine Casting Numbers; Pontiac Cylinder Head ID Numbers; Printable PDF. ARP makes HD rod bolts good idea to have the rods resized with them . (2=Pontiac, 2=Model Year, P=Pontiac Assembly Plant, 100001=Last six numbers of the car VIN) Pontiac Block Identification Pontiac Date Code on the Cylinder head Reggie Horning Engine Casting Number Reggie Horning Speaking of diagnostics, the steps to handle the P0455 code are simple.
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