These had main-bearing journals that measured to 3.250 inches and had larger main-bearing journal caps on three of the positions. In 1961, Pontiac brought out the first of their “large-journal” V8s, which many consider to be big-blocks. These engines had main-bearing journals that measured to 3.000 inches, and are widely known as the Pontiac “small-journal” V8s. From 1955–1961, Pontiac produced V8s ranging from 287-389 cubic inches in displacement. Prior, the only eight-cylinders Pontiac had used were straight-8 engines, and they finally debuted their inaugural V8 in 1955 alongside GM-partner Chevrolet. Pontiac’s V8 history dates back to 1955, when they introduced their first V8 engine. Read on to learn all about the famed Pontiac big-block 455. Today, muscle car enthusiasts look back fondly on the Pontiac 455 as a potent big-block V8 that powered everything from luxury cars like Catalina, to muscle cars like the GTO and Firebird Trans Am. Unfortunately, emissions caused Pontiac to detune the engine almost immediately, and they discontinued it after just seven model years. It was the biggest engine that Pontiac ever produced, and rivaled the Buick 455, Chevy 454, and Oldsmobile Rocket 455, as the top of the line General Motors’ muscle car offerings. Pontiac built the engine for the 1970–1976 model years, where it produced a maximum of 370 horsepower and 500 lb-ft of torque. We usually have at around 80-100 cars in stock at all times.Even though its glory days may have been relatively short lived, the Pontiac 455 is one of the most iconic V8 engines of the muscle car era. All of our cars prices are always listed on our website to show the values of the cars we sell. We specialize in American Muscle cars with integrity. historical Packard Dealership and is one of the largest full service classic car dealerships in the Midwest. American Dream Machines is located in a 41000 sq. YES, ALL OF OUR PICTURES ARE REAL, ALL THE WAY AROUND!!! Our pictures are taken in our professional photo studio for the best possible lighting and image accuracy to give our customers the most accurate representation of our cars on all sides. If they had all new parts, they would be new cars. Our staff has Midwest values and they will make every effort possible to represent our customer's best interests and accurately describe the cars we sell. We are located in the center of the Heartland in Des Moines, Iowa. We highly recommend that ALL CUSTOMERS call our staff and have very detailed discussions regarding overall condition of any classic car they are considering buying. This is not an easy goal to achieve when selling 40, 50 and 60 year old cars. Our #1 Goal at American Dream Machines is to make our customers happy with the cars we sell. New 15x 8.5 chrome American Racing Torque Thrust wheels wrapped in BFG perfomance tires. New Hotchkis coils and KYB shocks for a tight suspension. New headers with dual Flowmaster mufflers sound mean. The undercarriage is super nice with crisp and solid metal. New Rally steering wheel that feels great in your hands. New headliner and carpet for a fresh appearance. The dash is crack free with factory Rally tach and gauges. The black factory bucket seating is like new. Power steering and power front disc brakes for cruising. New fuel pump, water pump, oil pump, radiator, belts and hoses. ![]() HEI distibutor and Powermaster alternator has been added for fast starts. Goodies include Edelbrock intake and Holley 670 carb. Under the hood rests the numbers matching 350 engine that has been freshly rebuilt to pump out over 400 h.p. ![]() The Formula dual snorkel hood lets you know this bird means business. The body was taken down to the bare metal before the smooth Lucerne Blue paint was applied then rubbed to a deep shine. This Formula was previously from Nevada which accounts for its incredibly straight and solid body. Stunning rotisserie restored Lucerne Blue numbers matching 1971 Pontiac Firebird Formula 350 with PHS documentation, build sheet, window sticker and tons of receipts.
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