If the badges are to be believed, this Classic White 1970 Chevy Nova is an SS396. If the exhaust note is to be believed, there's some serious business going on under that bulging aftermarket hood.
The '70 model year was the end of the road for the factory big block Nova Super Sports, with the 396 (actually 402 cubes by then) available in either 350hp L34 or 375hp L78 forms. The big motor Novas were kinda in a class of their own by 1970, since Ford didn't even offer a real performance version of its compact Falcon, and the biggest motor in A-body Mopars was the 340, which was a spicy small block, but still a small block.
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