Small-Block BMW 320i Sounds Like It Escaped A Dallas Drag StripA Dallas BMW owner has built the kind of 3 Series that makes purists squint and hot rodders grin. In a new YouTube video, the builder shows off a BMW 320i E21 fitted with a Chevy small-block 350 V8, then takes the swapped coupe out on the streets of Dallas, Texas, where the little Bavarian box suddenly sounds more like Saturday night at a drag strip than a vintage European commuter. A Tiny BMW Gets Big Chevy Energy The car started life as a BMW E21 320i, the first generation of the 3 Series. BMW built the E21 from 1975 to 1983, and it helped set the template for the compact, rear-wheel-drive sport sedan formula that still defines the 3 Series today. In stock form, the E21 was light, simple, and tidy. It was not, however, built to rumble like a Camaro with an attitude problem.That changed when the owner dropped in a Chevrolet 350 small-block V8. The result is a car that mixes German balance with old-school American shove, turning the narrow, upright 320i into a strange little street weapon. It still has the classic shark-nose BMW face, but the soundtrack now comes from deep inside Detroit’s playbook.The Chevy 350, on the other hand, is a smart choice for a build like this. Chevrolet introduced the 350 V8 in the 1967 Camaro, and it later became one of the most common performance engines in American car culture. Parts are cheap, knowledge is everywhere, and almost every hot rod shop on Earth has seen one apart on a bench. Weird And Dangerous Or Awesome? The stock E21 320i sold in the United States came with a 2.0-liter four-cylinder, not a monster motor. U.S.-spec cars also carried heavier federal bumpers, and the listed curb weight for the 320i sits at about 2,606 pounds. That is not featherweight Miata territory, but it is still light enough for a healthy small-block to feel rude in the best possible way.The fun comes from torque. BMW’s original four-cylinder liked revs and momentum, but a Chevy 350 does not ask so politely. It makes the kind of low-end pull that can turn a short wheelbase, rear-drive chassis into a tire-roasting machine before the driver has time to say “we need a limited-slip differentiaaaaal!”That is also where the danger lives, though. The E21 uses an older rear-drive layout with semi-trailing arm rear suspension, a setup that can feel lively when the rear tires lose grip. Enthusiasts love that old BMW feel, but a big V8 adds a new level of drama. Good tires, strong brakes, sorted suspension, and careful throttle control should not be optional here. They are survival gear with lug nuts.Source: Mechadoc on YouTube