What is a 402 Chevy big block?

The Chevy 402 big block is a Big Block Chevy (BBC) engine created in the 1970s. The Chevy 402 engine is now mainly found in American muscle cars, such as the Chevrolet Camaro and Monte Carlo, and trucks and other vehicles big enough to hold the engine. BBC engines are known for their size and power.

Is a 402 a good engine?

72 402 is a low perf cast crank 2 bolt engine with those strange low compression heads that don’t look like the 454 open chamber heads. In stock form it’s a boat anchor, but with a bit of mild porting, a cam, and headers it can make an old Chevy go pretty good. The problem is it can also cost a bit to rebuild it.

What is the difference between a 400 and a 402 engine?

The 400 and 402 have the same 4.125″ bore, the 400 has a 3.75″ stroke, while the 402 has a 3.76″ stroke. The 400 has a shorter rod length of 5.565″, while the 402 has a rod length of 6.135″.

How much horsepower does a 402 big block have?

400 horsepower
The big block of the Chevy has a power output of over 400. The engine’s Torque is 415 pounds-feet at 3,600rpm. The engine can get over 400 horsepower.

What is the difference between a 396 and 402?

Although it displaced 6-cubic-inches more than the 396 and had a bore that was 0.03 inches wider than the 396, Chevrolet marketed the 402 as a 396 on its smaller cars like the Nova, while labeling it as a 402 in its full-size automobiles.

Is a 396 really a 402?

Can you stroke a 402?

The bottom line is you can stroke a 396/402 to 427, and 454, or you can increase to bore to these same sizes, and then stroking will lead to 489 and 517.

What is GM’s best engine?

Buick’s V-6 ranks not only as one of GM’s best engines; it’s also one of the best engines in industry history. GM made more than 25 million. 2. Cadillac V-16: Built for a decade, this giant, 431-cubic-inch engine set the standard for torque, smoothness and refinement in luxury cars of the 1930s.

How much horsepower can a 396 make?

The average power numbers from 4,000 to 6,250 rpm (where it carried over 400 lb-ft of torque) were 438 hp and 450 lb-ft of torque. While power peaked at a high 6,400 rpm, low-end torque was still plenty respectable with the motor peaking 483 lb-ft at 4,700 rpm.

Where can I buy a 402 big block engine?

The horsepower happy big block lives on and Speedway Motors is your source for performance parts and accessories for your 402 Chevy engine.

What was the 402 block on a Chevelle truck called?

Click to expand… They called them both “400” in the trucks. If small block, it had a 2bbl carb; if big block, it had a 4bbl carb. In Chevelle’s, they called the BBC 402 a “396” – go figure. The 402 block was a different casting than the 396.

When did the big block engine come out?

Understanding the big block vs. small block further, the big-block engines were designed to fit the large cars and trucks. None other than Chevrolet introduced these engines in 1958 for bigger vehicles. For big-block engines too, Chevy brought the displacements such as 348, 366, 396, 402, 409, 427, 454, 502, and 572 cubic inches.

What’s the difference between a 402 and a 396 block?

The 402 block was a different casting than the 396. It had a .031″ larger bore (as I already stated), but the cylinder walls were actually thinner than the early 396’s (some of which were also used for the 4.250″ bore 427 – same stroke for 396/402/427).