1937 DeSoto S3 Coupe â?" Mopar-Powered Hot Rod Street Build Why This Car Is Special The 1937 DeSoto S3 is one of the more overlooked gems of the prewar Mopar lineup, and that works in your favor. While Ford coupes and Chevy five-windows from this era routinely sell for two and three times what a comparable DeSoto commands, the S3 delivers the same flowing fender lines, the same all-steel construction, and arguably more visual presence â?" especially in coupe form. DeSoto introduced the S3 series for the 1937 model year as part of Chrysler Corporation's aggressive push to compete with mid-priced GM and Ford offerings. The cars were styled by Raymond Dietrich and carried a horizontal waterfall grille treatment that was modern for its time and has aged remarkably well. Production numbers for the S3 were solid for a mid-tier brand during the Depression recovery years, but coupe body styles represented a smaller fraction of total output compared to the more practical sedans. Finding one in this condition, with the original VIN tag intact, and in a completed, driveable hot rod configuration is not a common occurrence. What makes this particular 1937 DeSoto S3 worth your attention is the combination of factors that rarely line up in a pre-war hot rod at this price point. The body is all steel with the exception of the rear fender wells â?" an important detail for anyone who has dealt with the fiberglass fender panels common on budget builds from the 1970s and 1980s. The original VIN tag is present, which matters for titling, insurance, and long-term provenance. And under the hood sits a properly assembled Mopar small-block combination that makes this car genuinely usable as a daily driver or weekend cruiser rather than a trailer queen that needs sorting. Features List - Mopar Performance 360 V8 bored to 408 cubic inches - Edelbrock intake manifold - Mallory ignition system - AC compressor equipped - Chrysler 727 TorqueFlite 3-speed automatic transmission - Custom wood steering wheel - Wood dash panel with custom gauge cluster - Grey cloth interior - Suede door panels with wood accents and wood door pulls - Polished aluminum wheels - Chrome front grille - All-steel body construction (except rear fender wells) - Original VIN tag present - Hot rod street build â?" registered and road ready Mechanical The engine in this 1937 DeSoto S3 is a Mopar 360 small-block that has been bored out to 408 cubic inches, a well-established and proven stroker combination in the Mopar community. The 360 block is a LA-series engine, and the 408 stroker build using it typically involves a longer-stroke crankshaft to bring displacement up while retaining the block's proven bottom end. This combination has been popular in Mopar street builds for decades because the parts are widely available, the engine responds well to modifications, and it produces a broad, usable torque curve that suits a car like this â?" one you actually want to drive, not babysit. On top of the short block sits an Edelbrock intake manifold, a name that needs no introduction to anyone who has spent time under the hood of an American V8. Edelbrock aluminum intakes are a staple of street performance builds because they flow well across a wide RPM range without sacrificing low-end torque. The ignition system is a Mallory unit, a brand with a long track record in racing and performance applications known for delivering consistent spark under demanding conditions. An AC compressor is also fitted, which on a pre-war hot rod is not a small thing â?" it means someone invested real money in making this car comfortable to drive in the Florida heat, not just impressive in a parking lot. Backing the engine is a Chrysler 727 TorqueFlite automatic transmission, one of the most durable and respected automatics ever produced. Chrysler introduced the 727 in 1962 and it remained in production for decades, finding its way into everything from muscle cars to trucks to police interceptors. Its reput