These blocks are referred to as the Gen I small-block, the subsequent Gen II LT, and Generation IIIIV LS, along with the current Generation V (LTEcoTec3) engines.Chevrolet had introduced its popular small-block V8 in 1955, but needed something larger to power the medium-duty trucks and its heavier cars that were on the drawing board.This drawing is of the 1967 version of the 302 cid Chevrolet.
Drawings by David Kimble.Production of the original small-block began in the fall of 1954, for the 1955 model year, with a displacement of 265 cid, growing incrementally over time until reaching 400 cid in 1970. Several intermediate displacements appeared over the years, such as the 283 cid that was available with mechanical fuel injection, the 327 cid as well as the numerous 350 cid versions. Over the years, every American General Motors division, except Saturn, used it and its descendants in their vehicles. Bobby grew up in the heart of Illinois, becoming an avid dirt track race fan which has developed into a life long passion. Taking a break from the Midwest dirt tracks to fight evil doers in the world, he completed a full 21 year career in the Marine Corps. Leaf Group Lifestyle About Us Accessibility Terms of Use Privacy Policy Copyright Policy Manage Preferences. By decoding a VIN you can identify your Pontiacs factory of origin, body-style, and sequential production number. Depending upon your Pontiacs year, you may also identify your original engine manufacturer and size and any body series of your car, such as if it is a Trans Am or GTO. Pontiac Motor Identification Numbers How To Decode PontiacsThis guide will help you learn how to decode Pontiacs through the 1980 model year. Find Your VIN The VIN is located on a small piece of flat, rectangular metal called a plate. Pontiac Motor Identification Numbers Drivers Side VerticalPrior to model year 1968, the VIN plate is located on the drivers side vertical door jamb. From 1968 forward, the VIN plate is located on the drivers side of the dash, viewable through the front windshield. If your car is model year 1964 or older, it will have a maximum of 10 digits. If your car is model year 1965 to 1980, it will have 13 digits. The decoding process is not the same for every year, but is the same for a specific range of years. Here are the model years that have separate formats. Decoding a 1955-1964 Model Year Pontiac Example: 159P123456 Look for the letter in the middle of the VIN. This is the code for the factory where your Pontiac was built and is the dividing line between information about your car model and your production number. Lets look at the example again, this time isolating the digits before and after the alpha character. This codes meaning varies by year. It can mean the model year of the car or it can mean the number of cylinders of your cars original engine, followed by your cars body series. Pontiac). P----This code tells you what plant your car was built. PPontiac, Michigan). This is the sequential production number portion of the VIN. Decoding a 1965-1971 Model Year Pontiac Example: 223679N123456 Look for the letter in the middle of the VIN sequence. Decoding a 1972-1980 Model Year Pontiac Exampe: 2W87Z9N123456 This time we have more than one alpha character in the VIN, so it will help you to know that the code for the factory where your Pontiac was built is in the 7th position (left to right) and it is the dividing line between information about your car model and your production number. This code is assigned by GM to Pontiac. Every VIN in these model years will start with the number 2 if it is a Pontiac.) W----This code identifies your body series (WTrans Am). This code identifies your body style (87 two-door coupe). Z-This code identifies your cars original engine (ZPontiac 400 engine). N-This code identifies what plant your Pontiac was built at (NNorwalk, Ohio). Now that you understand how your VIN tells you information about your Pontiac, youll need to use an online VIN decoder or a VIN decoding book that lists all of the possible body styles, body series, manufacturing plants, and engine manufacturers and engine size. Things Youll Need Pen and paper Online decoder or Pontiac decoding book Warnings Never remove your VIN because it is illegal. References Catalog of American Car I D Numbers, 1950-59; Cars Parts Magazine; 1993 Catalog of American Car I D Numbers, 1960-69; Cars Parts Magazine; 1993 Catalog of American Car I D Numbers, 1970-79; Cars Parts Magazine; 1993 About the Author Christopher R. Phillip is the senior associate editor for Source Interlink Media. He has 21 years of professional writing experience, with an emphasis in the areas of music, arts and culture, as well as automotive history, motorsports and current trends in the automotive aftermarket field. Photo Credits Justin SullivanGetty Images NewsGetty Images Copyright 2020 Leaf Group Ltd.
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