How much horsepower does a 340 Six Pack have? (2023)

How much HP can a 340 make?

With the single four-barrel cast-iron factory dual-plane intake and exhaust manifolds, the basically stock 340 revealed the glorious truth with 320.3 horsepower at 5,500 rpm.

340 SIX PACK – Standard equipment on the New Dodge Challenger T/A includes a 340 Cubic inch V-8 with 3 in-line, 2 bbl. Holey carburetors. With a torque ratings of 345 pounds-feet @ 3400 rpm, the compression ratio is 10.5:1.

The factory rating on the 340 HP was 275hp at 5000 rpm, and 340 lbs/ft at 3200 rpm.

The O-340 family of engines covers a range from 160 hp (119 kW) to 170 hp (127 kW). All have a displacement of 340.4 cubic inches (5.58 litres) and the cylinders have air-cooled heads.

It is stated – the 340 should be considered the 'Hemi of the small block family'.

Perhaps the two most famous Chrysler LA small blocks were the company's 318 and 340 engines.

The problem with all the 340/360 heads on a 318 is the chamber measures about 70 cc, which will drop the compression to an unworkable low ratio on a 318. You can forget about decent performance with these heads and the stock pistons, so again, a set of moderately priced aftermarket pistons is the answer.

Its block was bored out to 4.04 in (102.6 mm) but 3.31 in (84.1 mm) stroke left unchanged, resulting in the 340 cu in (5.6 L) engine introduced for the 1968 model year.

According to ProfessCars™ estimation this Plymouth is capable of accelerating from 0 to 60 mph in 6.5 sec, from 0 to 100 km/h in 6.8 sec, from 0 to 160 km/h (100 mph) in 17 sec, from 0 to 200 km/h (124 mph) in 41.3 sec and the quarter mile drag time is 14.9 sec.

Is a 318 a good motor?

The 318 engine is absolutely the best all-around small block Mopar, in my opinion. It can easily make 400-plus horsepower and still has great street manners. If you're building for fuel economy, the 318 beats the Mopar 340 and 360, hands down. The 318 was produced in three versions: polysphere, LA series, and Magnum.

A 275-hp (gross), 340-cubic-inch V-8 propelled top-spec Duster 340s with sufficient gusto, while budget-friendly engine options, ranging from two slant sixes to a 318-cubic-inch V-8, helped put the sporty Plymouth - albeit far less fierce than the Road Runner or the 'Cuda - in 217,192 driveways that year, making it the ...

Magnum 5.9 engines commonly carried a rating of 245 horsepower, with the tiny factory hydraulic roller camshafts delivering a hair over . 400-inch lift.

This 5.9L core is cast with the numbers "360" on its side. These engines first appeared in 1992 (5.2L only, the 5.9L in 1993) and were made by the millions through the 2003 model year. The 360ci (5.9L) Magnum had a rated output between 230 and 250 hp.

The 318 (5.2 Liter V-8)

The power ratings of the new LA-series 318 were exactly the same as those for the old polyspherical-head design, 230 hp and 340 lb-ft.

The 5.7L V8 HEMI® engine is available only on the R/T trim This engine offers 370 horsepower with 395 lb-ft of torque. With this powerful HEMI® upgrade, you'll get a 0-60 mph of 5.2 seconds and a ¼ mile time of 13.7 seconds.

What year does the 5.7 Hemi have the most horsepower? The current 5.7 Hemi engine that was produced in 2013 has the most horsepower.

The iron cranks are quite strong and capable of handling normally aspirated power roughly up to 700 hp. All Gen III Hemi factory cranks are internally balanced.

Aftermarket support for the 360 is great, and with the right parts, it can easily make 450 horsepower and still have great street manners. If you need more inches, it's easy to drop in a stroker crank and get 406 cubic inches.

A six pack usually refers to the Chrysler (Mopar) carburetor setup which is three-two barrel carbs on an intake. You'll most often hear of it as a 440 Six Pack, the 440 referring to the Big Block Mopar engine displacing 440 cubic inches.

What engine came in the 70 challenger?

A 1970-only model was the Dodge Challenger T/A (Trans Am) racing homologation car, which used a specially tuned Six-Pack version of the 340 in³ (5.6 L) engine, topped with a giant hood scoop on a fiberglass hood.

Dodge Magnum - 390 Hemi Motor.

The 5.2-liter Chrysler LA 318 was a small-block gasoline V8 engine that was produced between 1967 and 1991. The 318 V8 was part of Chrysler's popular LA engine series, which also included the 238 V6, the 273 V8, the 340 V8, and the 360 V8. This engine is also known as the Dodge 318 and the Dodge 5.2-liter V8.

Engine options were 198 cu in (3.2 L) and 225 cu in (3.7 L) versions of Chrysler's Slant Six, as well as the 318 cu in (5.2 L) and 340 cu in (5.6 L) LA-series V8s.

Mopar built some of the loudest, gaudiest, most cartoonish muscle cars of the '60s and '70s. They were perfect. You couldn't ask more from a muscle car.

What is the claimed weight of the Plymouth Duster 340 279 PS? The Plymouth Duster 340 279 PS claimed weight (DIN) is 1500 kg / 3307 lb.

Is a poly 318 a big block?

Most commonly known as the "wide-block 318," "big-block 318," or "Poly 318," official Chrysler nomenclature describes it as the A479 or A-series 318.

No. They both run on unleaded gasoline, and they both have 8 cylinders. Those are the only things that they have in common.

The Chrysler LA 318 was the standard small block V8 used in Mopars from 1964 to 1991.

1971-'72: Dart Demon two-door is Dodge's version of the Plymouth Duster.

The Duster's interior was also identical to the Valiant's, sharing the same dashboard, seats and door panels. The Duster was a runaway success for Plymouth, selling over 1,328,377 by the time it was discontinued at the end of the 1976 model year.

The Hemi is newer, uses an aluminum block and heads where the Magnum uses iron, and the Hemis have a higher power rating than the 5.9 Magnum ever had. Besides, if you use a Hemi, you get to slap one of those cool “Yeah, it's got a Hemi” bumper stickers on your car.

Magnum heads featured larger valves with smaller stems, revised ports, and a new valvetrain style. The architecture was not dramatically altered, retaining an 18-degree wedge configuration, the same valve position, spacing, and length, and the same port layout.

The fact is, the small block Mopar LA-engines (318, 340 and 360cid) were under-rated at the factory and were the last of the big three small blocks to be offered to the public.

The 3.9 V6 got the job done, but it produced plenty of noise and vibration, especially when attached to a manual transmission. Still, it was reliable and made acceptable power, and production continued for Dakotas and Rams through the 2004 model year.

Cancellation. On November 1, 2007, Chrysler announced that, as part of its restructuring plans, the Dodge Magnum would be one of four models discontinued after the 2008 model year. In Chrysler's words: "The Magnum, along with the PT Cruiser convertible, the Crossfire, and the Pacifica were not earning their keep".

How fast is a Dodge Magnum RT?

The Mopar 273 was Chrysler's first LA small block V8. It was introduced in 1964 with a 2-barrel carburetor and made 180 HP. In 1965, a high-performance version called the Commando was introduced. The 273 Commando had a hotter cam, 4 barrel carb, and made 235 HP.

The 318 is the most common version of the A engine, produced from 1957 through 1966 in the US and 1967 in some export markets when it was replaced in all markets by the LA 318.

717 is just as fine in a Dodge Challenger Hellcat. But the perfect amount of horsepower, in any car, is right near 500. Let me explain. First, 500 is nice and round, halfway between zero (a terrible amount) and 1,000 (way too much).

Right between 200 and 300 is a good amount of horsepower for a car.

horsepower, the common unit of power; i.e., the rate at which work is done. In the British Imperial System, one horsepower equals 33,000 foot-pounds of work per minute—that is, the power necessary to lift a total mass of 33,000 pounds one foot in one minute.

A 1-horsepower engine couldn't maintain more than 20 or 30 mph in a normal car, and you could never turn on the headlights or the air conditioning. The other problem is acceleration. The bigger the engine, the faster you can accelerate from zero to 60mph.

Reportedly, the car can go from 0 – 62 mph in 2.7 seconds, 0 – 124 mph in just 6.6 seconds, and has a top speed said to be over 248 mph! That’s fast. For around $1.5 million, you get a 900-horsepower / 774 lb-ft twin-supercharged V8 engine and a set of 12-piston, 15-inch ceramic brakes.

How fast is 1000 hp in mph?

That should be good for over 1000 peak horsepower, a 0-124 mph time of six seconds, and a top speed of 217 mph.

It's not just the 3.1 seconds we expect the 599GTO will take to get to 60 mph—the Lambo sits as the quickest 600-hp car because this Ferrari's time is an estimate—or the 208-mph top speed; it's the feeling and sound the car generates at every turn of the wheel and each firing of every cylinder.

40 hp - = 28 mph. 50 hp - = 31 mph.

Right between 200 and 300 horsepower is the sweet spot for many drivers. Be cautious with models that approach 300 horsepower, unless the vehicle is a heavy truck or another large model.

Whether 400 hp is a lot depends entirely on the type of car. For a supercar, it isn't much, but for a family sedan, it's more than you'd need. However, for sports and luxury cars, 400 is a solid amount.

Building a V8 engine can cost anywhere from $3000-$6000, depending on where you get the parts and the quality of parts you're looking for.