How much horsepower does a 455 engine have?

The standard 455 wielded 350 horsepower and the performance Stage 1 version developed 370, although testing on many Buick 455s put the horsepower rating closer to 425. However, what made the 455 special was its torque rating of 510 foot-pounds, more than any other engine on the road in 1970.

Is the Oldsmobile 455 a good engine?

Very good motor. Huge torque and power wth very little tweaking. A mild cam a decent carb and a set of headers will give more street power than most can use. It will run forever too.

What cars had the 455 rocket 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 much horsepower does an Oldsmobile 455 big block have?

They rated the standard issue 455 at 350 HP and the high-performance stage I version at 360 HP.

Was the 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! Pontiac 389 Tri-Power Trophy V8.

Is the Oldsmobile 455 a small block engine?

For this reason, you often find an Oldsmobile 455 under the hood of a 1975 or later Buick model. In 1966 Pontiac really didn’t have a small block engine.

What kind of engine does a Pontiac 455 have?

The Pontiac 455 V-8 was actually a bored out 428-cubic-inch V-8 with a bore and stroke of 4 inches by 4 inches. For the 455, Pontiac expanded the cylinder bore to 4.152 inches and the stroke to 4.21 inches.

When did General Motors start using the 455 engine?

They rated the standard issue 455 at 350 HP and the high-performance stage I version at 360 HP. This engine had a short run starting in 1970. In 1975 General Motors started using the same engines across the different divisions and platforms.

What’s the difference between a 455 SD and 455 HO?

We will also uncover the difference between a 455 SD (Super Duty) and a 455 HO (High Output). Discover if the Buick, Pontiac or Oldsmobile engine has an advantage over the other. Finally, learn how the 455 benefited during a time when GM’s divisions took great pride in making their own engines.