How much horsepower does a Pontiac 455 engine have?

Published by Anaya Cole on

How much horsepower does a Pontiac 455 engine have?

360 horsepower
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.

Did Pontiac make a 455 cubic inch engine?

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.

What was the most powerful Pontiac engine?

The rear-drive G8, hailed here at AutoWeek and elsewhere in the wheeled world in its original rear-drive, 361-hp, 6.0-liter V8 form, now has a mighty 415-hp 6.2-liter V8 driving those rear wheels, making it the most powerful Pontiac ever.

What kind of engine does a Pontiac Bonneville have?

The standard engine for Bonneville was Pontiac’s new 301 cubic-inch V8 rated at 135 horsepower (101 kW) and optional engines included a 170-horsepower 350 or 180-horsepower 400 cubic-inch V8. A 185-horsepower Oldsmobile 403 cubic inch V8 was also an option.

Was Pontiac 455 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.

Is the Olds 455 a good motor?

There are people that will tell you that the 455ci Oldsmobile Rocket motor makes a better street engine than a race motor. In truth, a stock 455 does have a couple of drawbacks that are detrimental to living life above 4,000 rpm for extended periods. The 455’s Achilles’ heel is a poor oil return system.

How much HP can you get out of a 455 Olds?

Even at a mere 2,500 rpm, the Olds cranked out nearly 490 lb-ft, then went on to grunt out a solid 511 lb-ft at 3,700 rpm, and still managed to make a solid 445 hp at 5,000 rpm….

5,500 408 428
Peak 511 at 3,700 445 at 5,000
Average 474.5 358.7

Is Pontiac 455 and 400 the same block?

Functionally, these blocks are very much the same, with only minor structural differences, and virtually all were drilled and tapped for four-bolt caps (though only the 19701972 455 H.O. engines were equipped with them).

What was the best year for Pontiac Bonneville?

The 10 Best Pontiac Bonneville Models of All Time

  1. 2002 Pontiac Bonneville.
  2. 2000 Pontiac Bonneville.
  3. 1980 Pontiac Bonneville Coupe.
  4. 1977 Pontiac Bonneville.
  5. 1976 Pontiac Bonneville Brougham.
  6. 1967 Pontiac Bonneville.
  7. 1964 Pontiac Bonneville Brougham.
  8. 1961 Pontiac Bonneville.

Is the Pontiac Bonneville fast?

The official recorded speeds for the cast iron, stock-block Pontiac dubbed “Spirit of Bonneville” were: 1st timed mile: 186.285 mph. 2nd timed mile: 197.751 mph. 3rd timed mile: 202.524 mph.

Are Olds 455 a good engine?

Is Pontiac 455 a good engine?

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.

How much horsepower can you get out of an Olds 455?

Is a Olds 455 a big block?

Pontiac, Oldsmobile, and Buick each offered 455 cubic inch big block V8 engines in its muscle cars and full size models, but these engines didn’t share any attributes other than their displacement.

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.

Are Pontiac Bonnevilles rare?

In the world of rare domestics from the 1950s, it’s hard to get more rare or more desirable than the 1957 Pontiac Star Chief Custom Bonneville – better known as just the Bonneville. Just 630 production examples of these cars were ever made – one per dealer in the United States, plus two prototypes.

What was the fastest Pontiac ever made?

The 15 Fastest Cars Pontiac Ever Produced

  1. 1 2006 Pontiac GTO (175 mph)
  2. 2 2009 Pontiac G8 GXP (175 mph)
  3. 3 1998 Pontiac Firebird Trans Am (165 mph)
  4. 4 1963 Pontiac Tempest Super Duty (163 mph)
  5. 5 1973 Pontiac Firebird Trans Am 455 Super Duty (130 mph)
  6. 6 2005 Pontiac Grand Prix GXP (143 mph)

What is the difference between a Pontiac 400 and 455?

In fact, the 400 actually has a slight advantage over the 455 for maximum performance applications because its smaller-diameter bearings offer less friction and its smaller main journal bore leaves more material in the bulkhead.

Is a Pontiac 455 a big block?

Where can I buy a 1970 Pontiac Bonneville 455 convertible?

1970 Pontiac Bonneville 455 Convertible. This beautiful car is LOADED with options, and offered by The Vault Classic Cars dealership in Fullerton, CA, 714-401-1047. We ship worldwide, European and overseas customers are welcome. It’s a rust-free western car, sold new in Fresno, CA, and moved to Arizona a few years ago.

What kind of engine does a Pontiac 455 have?

Pontiac 455 V8 Engine The 455 Pontiac V8 was introduced in 1970 and provided large-bodied Pontiacs a torque-friendly engine. Prominently featured in the Pontiac Bonneville, the 455 was also used in the GTO, Trans Am, and the Firebird. The 455 was an improvement on the Pontiac 428 V8.

What is the engine code for a 1970 455?

The engine code is 0521182 YH front of block and 9799140 on the rear of block. Head numbers need to be cleaned up in order to get a good reading. More sharing options… Back to the 1970 455. The engine code is 0521182 YH front of block and 9799140 on the rear of block.

When did the Pontiac Grand Ville 455 come out?

The Pontiac Grand Ville series also featured the 455 beginning in 1972. Although the 455 has great torque, the 455’s horsepower was often adjusted due to various emissions changes, advertising gimmicks, or to appease insurance companies.