Frequent question: Is a 454 big block a good engine?

The 454 big block is a very good engine to go with if you are looking for something that can output a lot of power, and fit in a lot of classic cars and trucks. This is a classic engine from Chevrolet and stock it makes great power from the factory, if you upgrade it you can get even more out of it.

How much horsepower does a 454 big block put out?

Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big surprise. But like any stock engine, there was tons of power left to be squeezed out.

What year is the best Chevy 454 engine?

The 1970 versions of the Chevrolet 454 were the most powerful, with the LS5 putting out around 360 horsepower and the LS6 delivering about 450 horses.

How strong is a 454 engine?

The revised 454 (now known as the Vortec 7400) was good for a whopping 290hp and 410 lb-ft of torque, and it was offered until 2001 (the final year for commercial and recreational vehicle use).

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How many miles per gallon does a 454 get?

The 454 is a big-block carbureted engine found in most older model Chevrolet cars and trucks. The engine uses eight cylinders to provide high-end torque and speeds. The combination of larger bore and eight cylinders equates to very poor gas mileage. The engine runs an average of 10 to 15 mpg.

How big can you stroke 454?

Take a 454, add a 4.250-inch stroke crank along with some 6.385-inch rods and your displacement shoots up to 489 cubes.

How much does a 454 big block cost?

A 454 that’s needs a complete rebuild from a junk yard for a few hundred dollars or less. A turn key you can expect to pay for performance a street engine for a car or truck about $5,000 to factory high performance around $15,000.

Which Chevy big block is the best?

Our Top 5 Big Block Chevys of All Time

  • 396 L78. This is the original factory big block Mark IV engine from Chevrolet. …
  • 427 Tri-Power. The 427 big block was introduced as a production engine in 1966 for full-sized Chevrolets and Corvettes. …
  • 454 LS6.

Is a big block better than a small block?

Big block engines are larger in size and weigh more, but they produce more consistent power and torque to overcome the weight. Small block engines are smaller for better acceleration and handling, but more recently built models can be just as powerful as big block engines.

How much power can a 454 make?

In staying with the standard bore/stroke combination of 4.25/4 inches, however, it is not uncommon to yield power outputs of greater than 650 horsepower from the 454 in race engine configurations.

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Is the Chevy 7.4 a good engine?

The 1996-2000 L29 7.4L big blocks are great engines. Much more dependable and durable than the 6.5L diesel of that era. L29’s had multiport sequential fuel injection, all of the latest sealing technology to prevent oil leaks and the “Vortec” style heads flowed very well.

What cars have a 454?


  • 1970–1976 Chevrolet Caprice.
  • 1970–1975 Chevrolet Chevelle.
  • 1970–1975 Chevrolet Monte Carlo.
  • 1970–1975 Chevrolet El Camino.
  • 1971–1972 GMC Sprint.
  • 1970–1974 Chevrolet Corvette.

What transmission is good for a 454 big block?

That would be the 700R4 or simply called the 700R. This is a 4-speed, heavy duty GM automatic with a lock-up torque converter and an overdrive fourth gear.

How fast is a 454 SS?


0 – 60 mph 7.1 s
0 – 100 mph 22.5 s
1/4 mile 15.7 s @ 87.0 mph
Top speed 193 kph (120 mph)
Lateral acceleration 0.79 g (8 m/s²)

How much horsepower does a 454 SS truck have?

Used 1990 Chevrolet C/K 1500 Series 454SS Specs & Features

Base engine size 7.4 l
Base engine type Gas
Cylinders V8
Horsepower 230 hp @ 3,600 rpm