Is the Chevy 400 a good motor?

How many horsepower does a 400 small block have?

In case you missed the story, the best power numbers were gained with a set of GM Performance Parts Vortec heads supplied by Scoggin-Dickey, and even then the 400 small block Chevy managed only 401 hp and 458 lb-ft of torque.

How much horsepower does a 400 Chevy?

See all 12 photos Here’s the 400 with the stock Vortec heads on the dyno at Westech. We retained the stock Vortec springs to break in the cam. With the stock Vortec heads, the low-compression 400 managed to make 376 hp and almost 450 lb-ft of torque. Summit piston rings, std.

What is the difference between a 350 and 400 engine?

The Chevy 350 cubic inch engine has a 4-inch bore whereas a 400 cubic inch engine has a 4.125-inch bore. The 350 has a 3.48-inch stroke, and the 400 has a 3.75-inch stroke. … This is how an engine is stroked—by lengthening the crankshaft stroke and shortening the rod by the same amount.

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How much horsepower does a 400 v8 have?

In this application, the 400 had a four-barrel carburetor, had the same 8.2:1 compression, and was rated at 195 horsepower and 305 pound-feet of torque.

Is the Chevy 400 a big block?

The 400 CID Chevy small block engine was produced from 1970 until 1980 and was the largest displacement engine made in that platform. It was intended as a low performance, high-torque engine primarily used in Chevy’s heavier passenger cars and light-duty trucks.

What’s the difference between a 400 small block and a 400 big block?

Though big-block engines are significantly larger than their small-block brethren, the true difference between these two is more about displacement, bore, and stroke than strictly size. Typically, big-block engines have displacements of greater than 400 cubic inches and small block engines have a smaller displacement.

Is a Chevy 400 a small-block?

Referred to as a “small-block” for its size relative to the physically much larger Chevrolet big-block engines, The small block family spanned from 262 cu in (4.3 L) to 400 cu in (6.6 L) in displacement.

Chevrolet small-block engine
Manufacturer General Motors
Also called Chevrolet Turbo-Fire Nascar

How many liters is a Chevy 400 small-block?

400. The largest version of the Generation I small-block was the 400 (6.6 liter). It was the only engine available with both the 4.125-inch bore and the 3.75-inch stroke crankshaft. It debuted in 1970 and was produced for 10 years.

What car came with a 400 small-block?

The Chevrolet 400 was a compact car made by Chevrolet in Argentina from 1962 to 1974. The “400” was General Motors’s reply to Ford and Chrysler after those companies introduced the first compact cars to Argentina, the Ford Falcon and Valiant II respectively.

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How can you tell a 400 SBC?

How to Identify a Chevy 400 Small Block

  1. Open the hood and view the engine from the front on the passenger side.
  2. Look for the engine code. According to the Chevy-Camaro website, the code is located on a machined pad directly forward of the passenger-side cylinder head, on the front of the engine block.

What is a 400 engine?


Initially designed as a high torque/low performance engine, the 400 used a 4.125 inch bore and a 3.75 inch stroke with 5.56 inch long connecting rods. The increased bore diameter required GM to alter the block internally with cylinder bores that did not allow for cooling passages between them.

What is a 400 cubic inch engine?

One of Chrysler’s greatest engines was the 400 cubic inch, 6.8 L V8. It was introduced in 1972. … This engine was also known as part of the “wedge” family of engines because of the wedge shaped combustion chambers used. The massive motor produced up to 410 hp, a monumental amount of power for this time.

How big can you make a 400 small block?

The original 265ci small block used a very short 3.00-inch stroke and the block was designed with plenty of clearance in the crankcase area for a larger stroke. Again by 1970, GM engineers had stretched that stroke out to 3.75- inches to create the 400.