What's a rat engine?

Chevrolet Division, General Motors. That 454 was a member of the engine family known by racy types as the Rat Motors, so called because the small-block Chevy V8s were known among the same gasoline-scented folks as the Mouse Motors.

What engine was called the rat?

In 1965, Chevrolet began offering the big block Chevy Mark IV—better known as the Rat. This wasn't Chevy's initial go-around with big block engines as its Gen. I W-series big blocks were first offered in 1958.

Why is a small block Chevy called a mouse motor?

It began in '60s drag racing with the custom of referring to the Chrysler hemi as an "elephant" motor due to it's size. The Chev loyalists, being proud of the power output of their small block engines relative to size, coined the term "mouse motor" because elephants are supposedly afraid of mice.


What is a 427 engine?

Chevy's 427 engine is a 7.0L big-block V8 produced from 1966 until 1969. The 427 is part of the Mark IV engine family, alongside the 366, 396, 402, and 454.

How much HP does a 454 big block have?

The 454 EFI version was rated from 230 hp (172 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque.


What´s a RAT? RAM AIR TURBINE! Explained by "CAPTAIN" Joe



What is the strongest Chevy engine?

As the power behind the 2019 Corvette ZR1, the new supercharged 6.2L LT5 represents the pinnacle of Chevrolet's performance: It's the most powerful engine ever offered in a Chevy production vehicle.

Does a bigger cam give more power?

Does a camshaft increase horsepower? Yes, a camshaft adds 10 to 20 horsepower depending on the setup. To get the full potential of the high-performance camshaft, you'll have to swap out additional components like the air intake, exhaust manifold, injectors, and valve heads.

What is the difference between a 454 and a 427?

427 and 454 shared 4.250 bore, 427 has 3.76 stroke, 454 has a 4.0 stroke.

What does Chevy rst mean?

Chevy introduced a new special edition for the Tahoe and Suburban: the street-performance Rally Sport Truck, or RST. The Tahoe RST will also be available with a new Performance Package that includes a 420-hp, 6.2L V-8 engine; Magnetic Ride Control.


What is a 454 engine?

The 454 originated in 1970, a versatile engine that would be used in automotive and marine applications. This engine was used in many of Chevrolet's flagship models, including the Chevelle, Monte Carlo, and Corvette.

Is a Ford 427 a big block?

The Ford 427 engine is considered a big block engine with a displacement of nearly 7.0 liters. After the gas crunch of the '70s, the big block engines nearly vanished as manufacturers were required to produce commuter cars with improved fuel economy.

What does LS stand for?

In a car engine, LS stands for luxury sport, meaning it is majorly used in high-end cars that offer great performance like the Chevrolet. In a Chevy, the LS engine is the main V8 mainly used in General Motors' line of rear-wheel-drive cars.

Is 392 Hemi a big block?

The 392 is a small block.


What liter is a 454?

For many years the 454 (7.4-liter) V8 was the top choice from GM, while Ford had the mighty 460 (7.5-liter) V8.

How much HP does a 427 have?

The 427 lived in both station wagons and as well as Corvettes and Camaros. Fans of this engine tout the 435-horsepower L71 version of the 427 which powered the Chevy Corvette from 1967-1969. These cars could run 13-second quarter-miles right from the factory, and that was absolutely cooking back in the late '60s.

What motor is better 427 or 454?

The 454 used the same bore as a 427 with a stroke increase to 4.00". For higher RPM use a 427. For more lower end torque use a 454. The 496 you here people build is a 454 bored .

How can I tell if my Chevy is a 427?

The surest way to identify a 427 engine is to decode the engine casting number located on the engine block.
  1. Locate the engine casting number on the rear of the engine block on the bell housing flange.
  2. If the number is 3909802, it is a 427 produced from 1966 to 1967.


Do headers add horsepower?

Remember, headers increase horsepower a lot more on a modified engine. If you have enough room to spare for a long tube header, do so. That'll produce quite a lot of extra horsepower over stock exhaust manifolds.

What is a Stage 3 cam?

The Stage 3 cam is designed to work with some larger valves, port work, and upgraded carburetor or EFI system. This cam starts moving the power band a little higher in the RPM range (2500-6000). This is the biggest cam we recommend for a street application. It is used commonly in the race and hot street applications.

Are cammed cars reliable?

A cammed car is perfectly reliable and you don't have a hair on your nut sack if you don't cam that car. 800 SAE rwhp. 9.4 @ 145 mph. A cammed car is perfectly reliable and you don't have a hair on your nut sack if you don't cam that car.

What motor does Ford use in Nascar?

Ford Engines

Roush Yates Engines teamed with Ford Performance in 2007 to create Ford's first purpose-built, made-from-scratch NASCAR engine. The FR9 was eventually introduced to NASCAR racing in 2012 and is currently leased to seven Ford teams. New engines are delivered for every race.


What is a stroker engine?

As its name implies, a stroker is where we increase engine displacement by increasing piston stroke. When we increase stroke, we take the piston deeper in the cylinder bore, which increases displacement. The longer the stroke, the greater the fuel/air charge.
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