Long before diesel pickups, we were learning the hard lessons that still matter now. The ’53 Studebaker stood out because it was narrow, low, and slippery, which made it the right kind of car for dry lakes and Bonneville work where speed—not just elapsed time—was the whole game. Building those cars taught the fundamentals: airflow, gearing, valvetrain stability, driveline choices, and what breaks when you push too hard. That same thinking carried forward into everything else. We’re fuel agnostic because the fuel isn’t the real story. Power comes from air density. Whether it’s a supercharger, a turbocharger, or a super turbo system, the job is to pack more dense air into the engine and do it in a way that makes usable power without turning parts into scrap. That’s the thread running from early Studebakers to marine engines, diesel race programs, and the turnkey engines we’re developing now. We also answer a practical monitoring question here: if you’re running a vehicle without an ECU, Banks iDash Pro can still be used with the proper harness, sensors, and sensor modules, giving you a clean way to watch critical data like temperature, pressure, speed, and even air density.
Gale Banks opens by framing the discussion with Matt Gamble, Banks' engine program manager, whose work spans military programs and the company's developing turnkey engine lineup. Banks prefers the term turnkey over crate engine because these packages are intended to be complete systems, including engine management, wiring, intake hardware, exhaust components, instrumentation, and data logging for hobby vehicles such as restored older trucks and pre-emissions builds. Gamble describes this work as part of a larger effort to define the future of performance and propulsion across street, racing, marine, and military applications, with emphasis on reliability, efficiency, and fuel economy.
From there, Banks shifts into the requested historical perspective: how his engineering path began and how it led to the present. Rather than starting with diesel, he notes that Banks did not begin as a diesel company at all. In the early years, diesel was largely associated with stationary engines and larger vehicles, not pickups. His story begins instead with hot rodding in the 1950s, long before Banks became identified with diesel performance.
Banks traces his first serious engine work to 1954, when his father asked him to replace the blown head gasket in his mother's 1931 Ford Model A Sport Coupe. She never really got the car back in stock form. By the time Banks was finished, little of the original Model A powertrain remained. He built the engine around a Model B block and a counterweighted Model C crankshaft, used Durant connecting rods, Jahns pistons, and a camshaft influenced by the early flathead and Ford four-cylinder cam-grinding tradition. He converted the engine to an F-head configuration using a Riley four-port head with overhead-valve intake layout, a notable period speed part. A fresh, never-run Riley four-port assembly on a B block with a C crank now sits in the Banks exhibit at the NHRA Museum.
By 1958, the car had evolved further. Banks ran two Winfield downdraft carburetors on a cast-aluminum intake manifold of uncertain origin, built his first header and had it chromed, and used a Wyco side-drive magneto, likely sourced from farm equipment, driven from the front timing arrangement. The clutch was a three-finger Auburn unit, the transmission a 1939 Ford gearbox with synchromesh in second and third, and the rear axle a fragile quick-change. Stock output had been about 40 horsepower at roughly 2,200 to 2,300 rpm. After Banks' modifications, the engine turned well beyond 3,000 rpm and closer to 4,000 rpm, with compression raised from roughly 4:1 stock to about 7:1. Running on Chevron Custom Supreme 102-octane leaded gasoline, the car could outrun inline-six Chevrolets, though the arrival of the 1955 Chevrolet V8 changed the performance landscape dramatically. Banks also recalls the era's primitive bearing work, including scraping and filing caps to set clearances, a reminder of how rough and manual engine building could be at the time.
As a young builder, Banks quickly learned that progress came from spending time with experienced racers and machinists rather than peers his own age. He remembers early dyno sessions on an old water-brake dynamometer and later using the Champion dyno in North Long Beach run by Dick Jones. Among the influential figures there was Art Early, whom Banks describes as a nurturing mentor. That pattern repeated throughout his career: older racers, engine men, and machinists became his real education.
He contrasts that culture with formal schooling by noting that if you only spend time with people who know what you know, you do not advance. The practical knowledge came from hanging around the veterans. That mindset shaped not only his technical development but also his later desire to pass knowledge forward through Banks Speed School and related media. For Banks, engineering knowledge is meant to be disseminated, not guarded as black magic.
Banks then turns to the 1953 Studebaker Starlight Coupe, a car that made a deep impression on him. He argues that Studebaker styling before 1953 had been quirky at best, but the Starlight Coupe was something entirely different. Designed under Raymond Loewy, the industrial designer also associated with the Coca-Cola bottle and numerous consumer products, the 1953 Studebaker looked futuristic when placed next to its contemporaries from Chevrolet and Ford. Introduced in late 1952, it appeared as though it had arrived from another era.
Its narrow, slippery shape made it especially attractive for dry lakes and Bonneville use. Banks had grown up aware of Southern California dry lakes culture, including Muroc and El Mirage, and he knew the significance of Bonneville after Wally Parks and Bob Petersen helped establish the first Bonneville meet in 1949. He was drawn more to lakes racing than drag racing because, at the time, top speed carried more prestige than elapsed time. That preference for outright speed would remain central to his thinking, and he still distinguishes Bonneville's pure speed focus from drag racing's emphasis on reaction time, elapsed time, and clutch management.
Banks acquired his first 1953 Studebaker from Babe's Auto Wrecking in Downey. The car came as a shell with no drivetrain or interior, which suited him fine because he intended to build it for racing. He initially retained Studebaker power, starting with the 232-cubic-inch V8 and boring it to 259 cubic inches. He raised compression to 13.5:1 with Jahns pistons, ported the heads with a Do-More grinder, and worked with the engine's unusual connecting rod arrangement, which used a clamp-style wrist-pin retention method. He recalls the crankshafts as likely forgings.
Speed equipment for Studebakers was limited. Intake options may have existed from Offenhauser, but Banks ultimately used a Studebaker manifold and a Rochester WCFB carburetor from a Cadillac, later moving to an Avanti four-barrel manifold. For ignition, he went to George Stokes Company in Los Angeles and bought a Mallory dual-point distributor with full centrifugal advance and a Mallory coil. Stokes gave the teenage Banks his first open account, telling him he had to build credit somehow and might as well start there. Banks was only about 15 or 16 at the time.
His father, an LAPD officer, kept him on a short leash, but also supported his work. The family garage on Century Boulevard became a functioning engine shop, complete with a hoist arrangement and additional workspace his father built onto the structure. Cars could be pulled in, engines removed, and chassis pushed through to a rear slab area for storage. That home setup became the birthplace of increasingly serious projects.
While developing the Studebaker, Banks encountered something too unusual to ignore: parts from the experimental Studebaker Indianapolis engine program. In the early 1950s, Indianapolis had encouraged stock-block-based entries, a formula some competitors derisively called the junkyard formula. Studebaker participated with a racing version of its V8, and the cylinder-head conversion work was done by Leo Goosen, the legendary engineer associated with Miller and later Offenhauser racing engines.
Banks explains that Goosen had deep credentials, having worked on Miller engines that won at Indianapolis in the late 1920s, as well as aircraft and marine engines. The Studebaker Indy engine used a double overhead cam conversion, a dry-sump-style arrangement, and Hilborn mechanical fuel injection. Banks obtained unfinished parts for one of these engines through George Salih of Whittier, who had built Indianapolis-winning cars in 1955 and 1956. Some of the castings were incomplete, and Banks had to improvise. He built a sheet-metal intake manifold and ran two Cadillac WCFB carburetors in an inline dual-quad arrangement.
He assembled the engine in his father's garage, where the open-door workspace had become a gathering place for local car people. Eventually, a customer with a 1933 Plymouth bought the engine installation for $1,100, a substantial sum for Banks at the time. That money allowed him to move into a rented two-car garage next to Speed-O-Motive and Automotive Balancing Service in Lynwood, across from Barris Kustoms. The area was rich with talent; Keith Black was nearby in South Gate, still in his early Chrysler-engine days, and would later become another mentor.
Banks fills in the backstory of the Studebaker Indy effort. The engine had reportedly made close to 300 horsepower on methanol in relatively small displacement, making it competitive for the period. But at Indianapolis, the team used a welded crankshaft snout extension to drive the overhead cam system and engage an Ingersoll Rand air starter through the nose of the crank. The welds failed, breaking the snouts off the crankshaft and ending the program. Banks' own version used a stock crank snout and avoided that specific failure mode.
This leads into a broader discussion of racing formats and sanctioning. Banks contrasts Bonneville's openness to innovation with NHRA drag racing's need to preserve competitive balance. He recounts a mid-1980s conversation with Wally Parks and Graham Light about legalizing a twin-turbo, flat-crank Chrysler Top Fuel concept he had developed with Ron Hodgson of Pacemaker in Canada. Banks wanted open competition and hoped to be the first to run 300 mph in Top Fuel. Parks declined, explaining that NHRA could not allow one team to dominate through a specialized technology that others did not understand, because that would damage the sport. Parks also revealed that NHRA's insurer would cancel coverage if someone ran 300 mph in the quarter mile, prompting the sanctioning body to move the speed trap 66 feet toward the starting line so recorded speed would be lower and shutdown distance effectively longer. Banks presents this as an example of how drag racing often constrains innovation in ways Bonneville does not.
Banks did not stop at one Studebaker. At one point he owned three 1953 models: a drag car, a lakes and Bonneville car, and a street car. The street version used another 259-cubic-inch Studebaker V8 with a Howard eight-cycle camshaft, upgraded valve springs, enlarged spring pockets, and improved retainers and keepers. He recalls turning it a little over 6,000 rpm. The engine used Studebaker's robust shaft-mounted rocker system, which he notes shared similarities with Cadillac and Oldsmobile rocker geometry.
That street car eventually met its limit in a race against a 1958 Corvette on Highway 71 near Pomona during Banks' early Cal Poly years in 1961. Using the Borg-Warner overdrive setup, he accelerated hard, then kicked it out of overdrive at speed by flooring the throttle into the switch. The tachometer, a Sun unit mounted on the steering column, swept past its 8,500-rpm limit. He beat the Corvette, but spun most of the rod bearings in the process. After limping the car to a friend's house in Covina and pulling the ruined engine, Banks decided it was time for a small-block Chevrolet swap. He used a commercially available mount kit, possibly from Hurst, beginning the Chevrolet-powered Studebaker phase that would later produce records.
At the lakes, Banks eventually set the C/Gas Coupe record at 159.01 mph in a Studebaker that by then carried a 327 Chevrolet. He later ran Rochester fuel injection and then Hilborn injection. He also credits Bruce Geisler as a major figure in the next phase of his Studebaker and Bonneville work. When Banks wanted to replace the Studebaker Dana rear axle with a 1955-1957 Chevrolet dropout-center-section rear end for easier gear changes and better ratio availability, he was directed by Ak Miller's shop to Geisler. That introduction became a lifelong friendship and racing partnership that extended through many Bonneville efforts.
Although the episode begins with early gasoline hot rods, Banks emphasizes that his real identity is not tied to any one fuel. He says he is not a diesel guy, gasoline guy, nitromethane guy, methanol guy, hydrazine guy, CNG guy, or LNG guy, even though he has worked with all of them. He identifies instead as a forced-induction guy. That philosophy reaches back to 1960, when he supercharged a Buick Nailhead with a GMC 4-71 blower for marine use at Lake Arrowhead, and continued with turbocharged boats at Big Bear Lake, where altitude made boost especially valuable.
Marine work became a major thread in his career. Banks recalls turbocharged and liquid-intercooled marine engines for both military and sport use, and highlights one favorite story: Chuck Stearns, coaxed out of retirement at around age 40 by Bert Cord of Cask and Cleaver, won the Catalina Ski Race in a 32-foot Spectra powered by two Banks turbo marine engines, then repeated the feat the following year. Banks presents this as one of many examples of his engines succeeding in demanding real-world competition, not just on dynos.
The conversation closes by connecting those early blower experiments to current Banks development work. Gamble notes that the company has effectively come full circle by placing a positive-displacement supercharger on top of an L5P Duramax in the LockJaw project. Banks explains the distinction between turbo-supercharged and super-turbo arrangements. In Mad Max, the turbos feed the blower, making it turbo-supercharged. In the newer concept, the blower comes first, creating what Banks calls a super-turbo system. He prefers the blower-first arrangement and says it will be used for the Stage 3 turnkey engine planned for Pikes Peak.
Banks describes the purpose of the positive-displacement supercharger as torque fill, solving the low-speed response problem and dramatically increasing boost at low rpm. During early LockJaw testing, with supercharger only and no full calibration yet, the engine reportedly made about 25 psi of boost at only 1,300 to 1,400 rpm on a throttle snap, producing an extremely violent response. He also references earlier super-turbo work on a Navy-related marine Duramax concept, a super-turbo Detroit Diesel Series 60 in a Freightliner that became the fastest truck ever at Pikes Peak, and the current use of Mad Max on the AVL dyno for upper-power-level calibration.
Banks says the goal now is to pass on what he has learned. Through podcasts and Banks Speed School, he wants to preserve and disseminate the engineering knowledge accumulated over decades. He closes with a reminder that power is about air density, not just airflow in cfm. Pounds per minute matter, and compressor efficiency is really a measure of how effectively a supercharger or turbocharger increases air density.
The episode ends with two listener questions. In the first, Banks advises a John Deere technician that magnetized crankshafts and rods are undesirable because they can attract fine metallic debris. He explains that demagnetizing requires breaking up the DC field with AC, notes that small parts can be handled on demagnetizing tables such as those made by Goodson, and says Banks uses a Kansas Instruments hoop-style degaussing unit for crankshafts, though that requires crank removal. In the second, he confirms that the iDash can be used on a vehicle with no ECU by using a dedicated harness and selected sensor modules for temperature, pressure, speed, and more. He adds that for a supercharged 1983 Daihatsu hill-climb car, it would be useful to monitor exhaust gas temperature in both cylinders and to measure air-density change directly, since the real job of a supercharger or turbocharger is not merely to make pressure but to increase air density.