How much horsepower did the 426 Hemi really have?

How much horsepower did the 426 Hemi really have?

425 horsepower
MoPar 426 Hemi The 426 street Hemi was rated at 425 horsepower from the factory. This Chrysler dyno sheet from decades ago and this close-to-stock dyno session of a new 426 Hemi both put the gross horsepower rating at about 470 horsepower without full exhausts and other engine-driven accessories.

What made the 426 Hemi so good?

A hemispherical cylinder head (“hemi-head”) simply allows an engine to make more power. It has an efficient combustion chamber with an excellent surface-to-volume ratio, with minimal heat loss to the head, and allows for two larger valves.

How fast is a 426 Hemi?


0 – 100 kph 4.9 s
0 – 60 mph 4.6 s
Top speed 250 kph (155 mph)

Is a 426 wedge a Hemi?

The B and RB engines are often referred to as “wedge” engines because they use wedge-shaped combustion chambers; this differentiates them from Chrysler’s 426 Hemi big block engines that are typically referred to as “Hemi” or “426 Hemi” due to their hemispherical shaped combustion chambers.

How much torque does a 426 Hemi have?

The 426 Hemi, named for its 426 cubic inch displacement, was introduced with 425 horsepower at 5000 RPM and a peak torque of 490 ft-lbs at 4000 RPM for its street version.

How many Litres is a 426 Hemi?

Of course, the reference comes from the legendary 7.0-liter (426 cubic-inch) HEMI V8 built from 1964 through the 1971 model year.

How many HP does a 426 Hemi have?

The July 2019 issue of Hemmings’ Muscle Machines magazine had an interesting article about the 426 Street Hemi’s true horsepower. Officially, it was rated at 425 hp.@5,000 rpm. However, just like the high-revving 340 engine that was under-rated at 275 hp.@5,000, the Hemi did not make its peak horsepower until 6,000 rpm.

How big is a 426 Hemi engine?

Its 10.72 in (272.3 mm) deck height and 4.80 in (121.9 mm) bore spacing made it the biggest engine in racing at the time. The 426 Hemi of the 1960s was an engine produced for use in NASCAR, as raced in a Plymouth Belvedere in 1964. It was not initially available to the general buying public.

How much horsepower does a 426 Hemi Magnum have?

The high performance version of the 440 was rated at 375 horsepower, and the Hemi was rated at 425 horses, but the torque specifications for both engines were nearly identical. The 440 Magnum was rated at 480 lb-ft at 3200 rpm, while the 426 Hemi was rated at 490 lb-ft of torque at 4000 rpm.

What is crate Hemi?

The 426 Hemi crate is basically a turnkey engine, requiring little more than a carb and headers to run.

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