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Looking for used Pontiac engines for sale? You've come to the right place. At Moon Auto Parts, we stock low-mileage, grade A used Pontiac engines for every major model—from the iconic GTO and Grand Prix to the G6, Bonneville, Solstice, and beyond. Every used Pontiac engine we sell is fully inspected, compression-tested, and VIN-matched to your vehicle before it ships, so you get a drop-in-ready replacement without the guesswork. Whether you're restoring a classic muscle car or replacing a daily driver, our inventory, backed by 4 years / 40,000 miles of warranty and free commercial shipping, makes it easy to get your Pontiac back on the road fast.
Searching for Pontiac Engines for Sale? You've come to the right place. Pontiac engines were born as the junior partner to General Motors' Oakland division in 1926, thanks to Edward M. Murphy and that legacy of performance is exactly why used Pontiac Engines for Sale remain in high demand among restorers and everyday drivers like. The founder of the Oakland Motor Car Company, who had sold out to General Motors some 13 years earlier. During the 1950s through to the 1970s, Pontiac quickly established itself as one of GM's go-to brands for those who wanted performance & style in a mid-range option. That's largely thanks to outstanding leadership from Semon "Bunkie" Knudsen & John DeLorean, who encouraged the brand to go full-on muscle car.
Pontiac's reputation really started to take off with the Pontiac v8 engine, which made its 1st appearance back in 1955 that engine then went on to power some truly iconic cars, including the GTO, Firebird & Trans Am. The engines that came out of Pontiac's yard were pretty impressive, ranging in block size from 287ci to 455ci. The beauty of these Pontiac engines was that they all used the same basic block design, which made swapping out parts much easier and indeed more cost-effective.
389 Pontiac engine for sale(V8) (1959–1966): Known for powering the original GTO, this 389-ci engine produced up to 360 horsepower in high-output trims. Today, used 389s are prized for authenticity in GTO and Catalina restorations.
Pontiac 400 engine for sale (1967–1978): One of the most versatile engines, the 400-ci, was used in Firebirds and Trans Ams. It’s abundant in the used market, with strong aftermarket support for rebuilds. Rebuilders favor it for durability and moderate cost.
Pontiac 455 engine for sale (V8) (1970–1976): The largest displacement engine from Pontiac is known for massive torque (over 500 lb-ft). Used 455s are rarer and more expensive but sought after for high-performance restorations.
A Pontiac 400 motor for sale is a popular choice for muscle car enthusiasts because of its strong power output and reliability. Many collectors also search for a 389 Pontiac engine for sale, known for powering some of the most iconic Pontiac models of the 1960s. For even more performance, the 428 Pontiac motor delivers impressive torque and smooth acceleration. Whether you are restoring a classic car or upgrading your vehicle, a Pontiac 428 engine for sale can provide the authentic power and performance Pontiac engines are famous for.
Used Pontiac engines are typically sourced from classic car dismantlers, rebuilders, and private collectors. Rebuilt Pontiac 400 and 455 blocks command premium prices, typically ranging from $3,000 to $8,000. The 389 runs slightly lower but stays highly collectable for matching-number restorations.
The value of a used engine depends heavily on block casting numbers, originality, and rebuild condition. Enthusiasts often restore engines to factory specs using OEM parts or mild performance upgrades to preserve drivability.
The Pontiac, Oldsmobile, & Cadillac engines have the same bolt pattern in the bellhousing. This means you can swap transmissions between those GM divisions. A Pontiac 400 engine or 455 engine will bolt up just fine to a transmission from Oldsmobile or Buick. Bolting it up to a Chevrolet transmission, however, will require a bit of extra work. Dealerships and hot rodders actively swapped Pontiac 400 engines and Pontiac 455 engines into Oldsmobile 442s and Buick Skylarks. Even early Cadillacs received these swaps, all chasing better performance during the muscle car era. GM never approved it, but shared B-O-P transmission fitment made every one of those swaps mechanically possible.
Pontiac stopped producing its own V8 engines in 1981, prompting GM to switch to Chevy small-blocks and Oldsmobile V6/V8s. The 1982–1992 Firebirds ran Chevy 305 and Pontiac 350 engines as standard fitment. Many LeMans and Grand Prix models of that era received Oldsmobile 307 engines instead. These later GM engines shared mounting points and accessory drives across multiple divisions. That shared design makes swapping engines between 1980s–90s Pontiacs and Chevrolets, like a Firebird and Camaro, completely straightforward.
Trusted by thousands of customers, Moon Auto Parts sources used engines and used transmissions from 5,000+ junkyards nationwide. This makes it easy for them to list and track all makes and models of engines and transmissions. They offer a free warranty and free shipping as a complement to help the customers stay stress-free.
