Chevy 383 vs. Mopar 383: V8 Engine Showdown
â–Ľ Summary
– The article discusses the existence of multiple 383 cubic-inch V8 engines from different manufacturers, specifically comparing Chrysler and Chevrolet versions.
– The Chevrolet 383 is primarily an aftermarket creation, famously developed by Joe Sherman in the late 1970s using a modified 350 block and 400 crankshaft.
– The Chrysler B-series 383 big-block engine historically lacked respect, overshadowed by more powerful Mopar engines like the 440 and 426 Hemi.
– A lesser-known, short-lived RB-series 383 was produced by Chrysler from 1959-1960, but the article focuses on the more common B-series version.
– In 1967, Hot Rod magazine significantly increased a 383’s horsepower from 278 to 437 through modifications like headers, cams, and installing 440 cylinder heads.
The Chevy 383 and Mopar 383 represent two distinct approaches to American V8 engineering, sharing only a common displacement in cubic inches. One is a legendary aftermarket small-block stroker, while the other is a factory big-block that powered some of Chrysler’s most iconic vehicles. Understanding their differences goes beyond simple specs, diving into their origins, design philosophies, and performance potential.
The Chevrolet 383 is not a factory engine from the classic muscle car era. It is a popular stroker combination created by engine builders like the late Joe Sherman. By fitting a crankshaft from a 400 small-block into an overbored 350 block, enthusiasts created a potent, lightweight package that became a cornerstone of performance. This hybrid approach leverages the vast aftermarket support for the small-block Chevy platform, making it a versatile and cost-effective powerplant for everything from street machines to dedicated race cars.
In contrast, the Mopar 383 is a genuine factory big-block engine that found its way into numerous Chrysler, Dodge, and Plymouth models from the 1960s and early 1970s. As part of the B-engine family, it was often overshadowed by its larger siblings, the 440 and the legendary 426 Hemi. For years, it was viewed as a reliable but unexciting torque motor, lacking the glamour of the top-tier performance options. However, its reputation has been rehabilitated by modern enthusiasts who recognize its robust construction and significant untapped potential.
Performance potential between these two engines varies dramatically based on their starting points. A typical Chevy 383 stroker, benefiting from decades of aftermarket development, can easily produce over 400 horsepower with a thoughtful selection of cylinder heads, camshaft, and induction system. Its small-block architecture allows for high-revving characteristics and relatively lightweight packaging.
The Mopar 383, while initially underrated, has proven itself highly responsive to modifications. As demonstrated in a classic Hot Rod magazine project, simple bolt-on parts like headers and a carburetor can yield substantial gains. Swapping to the larger ports of 440 cylinder heads unlocks even more power, showcasing that the foundational B-block is a strong platform capable of supporting serious horsepower with the right components.
Choosing between them often comes down to application and preference. The Chevy 383 offers immense aftermarket support and swap-ability into a wide range of vehicles. The Mopar 383 provides an authentic period-correct heart for a classic Chrysler product and has a growing community dedicated to unlocking its performance. Both engines stand as testaments to the enduring appeal of cubic inches and American V8 ingenuity.
(Source: jalopnik)
