Rated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.
Is a Pontiac 455 a good motor?
Despite only two years in production run, the 455 H.O. is regarded by many Poncho experts as the most versatile street engine Pontiac ever produced. Gobs of low-rpm torque make it quite responsive in normal driving conditions, and it can instantly turn tires into a smoky haze by standing on the throttle.
Did Pontiac ever make a 455?
Of the three 455 cubic inch V8 engines offered by General Motors in 1970, the Pontiac 455 took the most unusual route to the market. Unlike Oldsmobile and Buick, which had both big block and small block engines on the shelf, Pontiac had been developing the same eight-cylinder formula since 1955.
Is the Pontiac 455 considered a big block?
That’s right, the 455 was not a big block because Pontiac never had a big block. Or a small block. Throughout its entire existence, Pontiac only ever manufactured a single V8 engine family!
How much horsepower can you get out of a 455 big block?
Offering between 310 and 400hp, and pushing out a spectacular 500 lb-ft of torque, the 455 big block was most famously used in the 442 muscle car.
Which Pontiac GTO had the most horsepower?
04: Most powerful
In fact, the most powerful production GTOs were the 1969–70 models with the optional Ram Air IV 400-cubic-inch V-8, which made 370 horsepower at 5500 rpm and 445 lb-ft of torque at 3900 rpm.
What years did Pontiac make a 455?
General Motors produced the Pontiac 455-cubic-inch V-8 engine from 1970 through 1976. The 455 wielded massive horsepower, but a new horsepower rating system and tighter emission controls drove the 455’s power lower each year until GM abandoned the engine in 1976.
Did Pontiac make a 350 big block?
Welcome to the board, Pontiac motors are not “big block” or “small block”. The 326 through the 455 all share the same external dimensions with the exception of the 301 motor. So if you have a Pontiac 350, then you have a Pontiac 350.
What cars had the 455 engine?
455
Oldsmobile Cutlass.Oldsmobile Vista Cruiser (1970–76)Oldsmobile Custom Cruiser.Oldsmobile 4-4-2.Oldsmobile Hurst/Olds, 390 hp (291 kW)Oldsmobile Delta 88.Oldsmobile 98.1968–1970 Oldsmobile Toronado, 375 hp (280 kW)
How do I identify a Pontiac 455 engine?
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. There is no displacement stamp for 421, 389 or 326 blocks. To further identify the year and application, move to the top and rear of the block, where the distributor is mounted.
What car has a 455 rocket?
The Oldsmobile 455 Version
In 1968 the engine found its way into Oldsmobile’s premium luxury muscle car, the 442. They called it the Rocket 455 which became an excellent marketing tool.
How much is a 455 engine?
you could be putting anywhere from 750 to 5000 into it.
What was the fastest Pontiac ever made?
The 15 Fastest Cars Pontiac Ever Produced
1 2006 Pontiac GTO (175 mph)2 2009 Pontiac G8 GXP (175 mph) 3 1998 Pontiac Firebird Trans Am (165 mph) 4 1963 Pontiac Tempest Super Duty (163 mph) 5 1973 Pontiac Firebird Trans Am 455 Super Duty (130 mph) 6 2005 Pontiac Grand Prix GXP (143 mph)
Did Pontiac make a 428 engine?
Did Pontiac Ever Make A 428 Cubic Inch Engine? During only the first half of 1967, 69 428 cubic inch engines were manufactured in Pontiac. In fact, it was one of those engines that helped power big cars like Bonnevilles, and wasn’t used at its highest level primarily by performance cars.
Did Pontiac make a big block 400?
In 1967, Pontiac took the basic recipe of the 389 and added a bit to its bore, creating the 400. With a 4.12-inch bore and a 3.75-inch stroke, Pontiac’s 400 had similar bore and stroke to Chevy’s big-block 396 (even when the Chevy actually displaced 402 cubic inches).
Did Pontiac make a 455 cubic inch engine?
General Motors produced the Pontiac 455-cubic-inch V-8 engine from 1970 through 1976. The 455 wielded massive horsepower, but a new horsepower rating system and tighter emission controls drove the 455’s power lower each year until GM abandoned the engine in 1976.
What is the fastest Pontiac Firebird?
Running on nothing but straight gasoline, this Banks twin-turbocharged Firebird scorches the Salt at 287 mph to become the new World’s Fastest Passenger Car.
