Best 3 American muscle cars

1970 Buick GSX Stage 1

 
When Buick entered the muscle-car market, it was among the most luxurious of the brands, and some of the most powerful.
The GSX appearance package, first available for the 1970 Gran Sport 455, abandoned Buick's traditional, more dignified branding with a rear spoiler and body striping. Of the 687 GSXs built, 488 were ordered with the Stage 1 upgrade, according to HowStuffWorks.com.
First appearing as an option on the 1965 Skylark, Gran Sport became a separate nameplate in 1967. By 1970, a 455-cubic-inch V-8 engine powered the Gran Sport. It produced a hefty 510 pounds-foot of torque. Those with Stage 1 tuning and engine tweaks delivered 360 horsepower to the rear wheels. There were quicker competitors, but the GSX truly was unique.

1970 Plymouth Hemi 'Cuda

 
A variety of V-6 and V-8 engines powered the 1970 Plymouth Barracuda, but the big dog of the bunch was armed with the dual-carburetor, 426-cubic-inch Hemi that whipped up 425 horsepower. The Hemi 'Cuda could certainly go toe to toe with the era's top-tier muscle cars, as the carmaker gave its muscle cars a suspension tailored to heavy-metal acceleration, according to HowStuffWorks.com.
The Barracuda originally was based on the Valiant. But with a 1970 redesign, the Barracuda finally shifted away from the Valiant’s design. Plymouth produced a limited number of the Hemi 'Cudas, which are highly prized today.
Opting for the Hemi V-8 engine boosted the purchase price. A shaker hood, featuring an air intake mounted on top of the engine's air cleaner that protrudes through a hole in the hood, was standard on the Hemi 'Cuda.

1970 Chevrolet Chevelle SS 454

 
Many consider 1970 to be the apex of the muscle car era, and the Chevelle SS 454 is a weighty piece of evidence for that argument. Chevrolet offered two versions of the 454-cubic-inch V-8. The LS5 generated a very impressive 360 horsepower, while the LS6 punched out a whopping 450 ponies. It's the LS6 version, with its Holley four-barrel carburetor, that put the SS 454 on this list. No other muscle car would equal the horsepower wallop of the 1970 SS 454, according to HowThingsWork.com. It was the last great gasp of the muscle-car era.
Not only could the SS 454 blow the doors off most of its competitors, but it looked good doing it. Chevelle's swept-back roof line provided the illusion of speed, even when idle. A bulged hood was part of the design, alerting passers-by that something really special was happening under it.