What is the difference between a 396 and 402?

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 Chevy 402 a 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.

How do you decode GM engine numbers?

How to Decode the GM Engine Block

1. Locate the engine block code.
2. Wipe any grease or dirt off the code to make sure you read each digit correctly.
3. Look at the first digit, which will be a capital letter.
4. Read the next four digits in the code, which will be all numbers.

What year did the 396 become a 402?

Worth noting, for the 1970 model year Chevrolet increased the 396’s displacement to 402 cubic inches using the same increase in bore Hot Rod did for their test. So the L78 396 for 1970 was a 402 V8. The same was true for all other versions of the 396 for 1970.

When did the Chevy 402 come out?

1970
Introduced in 1970, the 402 cu in (6.6 L) was a 396 cu in (6.5 L) bored out by 0.03 in (0.76 mm). Despite being 6 cubic inches (98 cc) larger, Chevrolet continued marketing it under the popular “396” label in the smaller cars while at the same time labeling it “Turbo-Jet 400” in the full-size cars.

How much horsepower can you get out of a 402?

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.

How do I identify a Chevy 396 engine?

Big blocks are named after the size of their displacement as measured in cubic inches (e.g., 350, 396, 440 and so on). It is easy to identify a 396 Big Block engine made by Chevy as the engine code is stamped above the timing chain cover.

How do I tell what year my Chevy engine is?

How Can You Tell What Year a Chevy Engine Is?

1. Open the hood of your Chevy and locate the engine block.
2. Look at both the front face and rear face of the engine block for the block date code.
3. Decide which type of date code your block uses, either an alphanumeric or simple numeric code.

Can you tell engine size by Vin?

Your VIN number is your vehicle identification number and you can find your engine size by VIN number. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine codes. Just tell the store clerk those two characters and you’re in business.

What was the last year for the Chevy 396 engine?

Chevrolet kept the “396” moniker instead of changing it to correct “402”. So technically the L78 396’s last production year was 1969 and the 1970 was a L78 402 however since Chevrolet marketed the L78 402 as a L78 396, history will probably continue to refer to it as the 1970 L78 396.