What is a 402 big block?

What is a 402 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.

How much horsepower does a 402 big block Chevy 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.

Whats the difference between a Chevy 400 and 402?

The SB 400 runs a 4.125″ bore x 3.75″ stroke, and the BB 402 runs a 4.125″ bore x 3.76″ stroke. Tit for tat on reciprocating masses, etc. It all comes down to the head/intake flow and the differences in what you have to do with the cams to get all the power out.

Is a 6.2 A big block?

In the 6.2, that translates into a 4.02-inch bore. We’ve come to think of the 6.2-liter as a big-block modular. Of course, the only modular architecture making it through to the 6.2 is the bellhousing bolt pattern.

How much power can you get out of a 396?

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.

Is the Chevy 396 a good engine?

The 396 is a good revving engine, so you’d want to run a steel crank so it would live at the rpm you’d have to run it to make HP. And probably a roller cam, as flat tappet cams in big blocks have a nasty habit of “going away” relatively easily.

Is the GMC 6.2 engine problems?

Unfortunately, the GMC Envoy has its share of issues with the 6.2 engine. Some of those issues include: The engine idling rough, – vehicle owners were reportedly told it was due to a cylinder misfire. The vehicle’s engine may develop a misfire because of worn valve seats.

Is the 6.2 liter engine reliable?

In our opinion, the Ford 6.2L V8 is a reliable engine. It’s built to power higher-end F150 models like the SVT Raptor and Super Duty trucks, such as the F-250 and F-350. Most Ford 6.2 engines live a rough life, but “built Ford tough” applies to this engine. Oil leaks are natural as engines age.

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).

Is there such a thing as a stroked 402?

The square port heads are the high performance bb car heads. It will also tell you if you have a stroked 396 to 402 or a true factory 402. Uh, there is no such thing as a “stroked 396”.

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.

How big is a 1972 Chevy 402 engine?

The 402 is basically a .031″ over 396. I’m pulling about 500 flywheel HP with my .030″-over 396 with a basic rebuild (forged pistons), ported stock heads, a nice cam, and good intake manifold. Hello.. I am new to Chevy’s and I am looking for a decent engine / transmission for a new project.