This wasn’t about stuffing a big engine into a Trans-Am and hoping for the best. The real work was making a street car live with extreme power. Our twin-turbo Pontiac builds combined big-block torque, dual carburetors, and water-to-air intercooling with real street equipment like air conditioning and power steering, then backed it up with gearing, driveline fixes, and chassis work so the car could actually use the power. That exposed the parts most people never think about. A stock-style speedometer was useless. A reinforced Ford 9-inch became necessary because the torque could break the housing. Convertible and T-top chassis flex could turn into a real stability problem when the car was loaded hard. At this level, the weak link is never just the engine. The result was a true street-driven twin-turbo Trans-Am that pushed into 200-plus-mph territory, with one South African car ultimately reaching about 252 mph and another project car running 204 mph. The engineering point is simple: big speed only counts when the whole car is built to survive it.
This episode centers on Gale Banks' long friendship and working relationship with Rick Young, who first walked into Banks' San Gabriel speed shop around 1980 while still in high school. Rick had heard that getting a job at Banks was the dream opportunity for any young gearhead, so he showed up with a plan: he claimed he could wire boats because he knew Gale was heavily involved in marine engines. Gale did not need a boat electrician, but he did need a parts-truck driver, and Rick took the job immediately. From there, he became part of a very small company-roughly a dozen employees at the time-and watched it grow while participating in everything from parts runs to electrical work and shop projects.
Banks and Young describe those early years as an unusually intense engineering environment. The shop was still small enough that everyone saw everything, including dyno sessions on engines that faced the street through large barn doors. One of the memorable sights was a Bonneville engine making more than 1,000 horsepower with a massive exhaust, loud enough to draw police officers who would simply stand outside and watch. Young's recollection is that the company already operated with a sense of certainty: when Banks took on a project, the expectation inside the shop was not that they might succeed, but that they would.
Banks explains that his turbocharging background began in the late 1960s and expanded through the 1970s in marine racing. The company built turbocharged offshore, river-race, fuel hydroplane, and circle-race boat engines, most of them using liquid-coupled charge-air coolers. That marine experience carried directly into the automotive work of the 1980s. When Young joined the company, Banks was effectively transferring proven boat-engine turbocharging and liquid intercooling concepts into street and race cars.
Hot Rod magazine documented much of that era, and Banks notes that the company eventually became so competitive that it was effectively pushed out of Top Fuel and Funny Car competition. At the time, he did not fully appreciate how far ahead some of the Banks cars were relative to the world's established high-performance exotics. It was only later, through comparisons with foreign cars such as Porsches and Ferraris and through discussions with automotive journalists, that he recognized just how extraordinary the performance had been. What the shop considered simply the current state of the art turned out to be dramatically ahead of the broader market.
A major turning point came around 1982, when Banks traveled to Detroit to build a relationship with General Motors. He returned with two brand-new F-body cars, an early Camaro and Firebird, before the public had even seen them. Young recalls unloading the white cars from a transporter in the street and watching people stop in disbelief. These were effectively pre-production or engineering vehicles, and their appearance alone caused a stir.
Banks Engineering immediately began developing multiple concepts around the new platform. The streamlined shape of the 1982 Firebird in particular made it an attractive foundation for high-speed work. From those early experiments emerged two especially important cars: the understated blue Trans Am built as an ultimate sleeper for a South African client, and the red Car and Driver project car that later became famous as the fastest street-driven car in the world.
The blue car began as a very plain, almost rental-spec Trans Am. Young describes it as the ultimate sleeper because the exterior remained deliberately subdued while the mechanical package became extreme. Under the stock hood, Banks fit a big-block Chevrolet of roughly 430 cubic inches, based on a 427 with only a slight overbore. The engine used dual Holley four-barrel carburetors, a water-to-air intercooler, and very large turbochargers. Despite the packaging challenge, the hood closed, the car idled properly, and it retained street equipment including air conditioning, power steering, and a stereo.
The drivetrain included a Doug Nash five-speed transmission, suspension components from Herb Adams' VSE program, and Center Line wheels, which were a premium choice at the time. The customer was a wealthy South African enthusiast who already owned another Banks-built twin-turbo small-block Capri and wanted the fastest car in the world. The goal was not merely to build a powerful machine, but to create a fully streetable supercar that looked ordinary.
Young later accompanied the completed car to South Africa after the owner invited him to deliver it personally. The trip itself took about 30 hours because South African Airways could not fly directly over much of Africa at the time. The car had been shipped separately by freighter, and when it arrived the owner and his associates were too intimidated to drive it, so they waited for Young. He started it, drove it around town, and quickly noticed detonation from poor fuel. Better gasoline was sourced from the airport before any serious testing continued.
Once proper fuel was in the car, Young took the owner and a passenger onto a straight four-lane highway in the middle of the day with virtually no traffic. He describes the car's power as staggering. Back in California, the car had already demonstrated its capability by spinning the tires at 70 to 80 mph in second gear on the 605 freeway despite carrying a very tall 2.29 rear axle ratio intended for speeds above 200 mph.
In South Africa, Young accelerated through the gears and saw 185 mph on the speedometer while the car was still pulling hard. He believed it was within roughly a second and a half of 200 mph when his passengers demanded that he slow down. He never personally reached 200 mph in the car, but he remained convinced it had far more left. He estimates that at around 100 mph in third gear, full throttle felt like being hit in the back by a bus. Yet the car remained stable, smooth, and free of vibration.
The car later set South African land-speed records at altitude-around 6,000 feet, with thinner air than Bonneville. Young recalls an initial run of 238 mph, followed by higher speeds after additional preparation. Banks notes that the ultimate figure reached approximately 406 km/h, or about 252 mph, even though his original target had been 240 mph. The remarkable part was that after these runs, the car could still be driven home on the highway. Banks estimates output at around 1,400 horsepower. Because the engine exceeded the capacity of available dyno equipment, the team developed an onboard measurement system they called the Bankstein effect to estimate power and even evaluate exhaust-brake performance on diesel applications.
The second major F-body story is the red Trans Am developed with Car and Driver. The project began after technical editor Csaba Csere heard about Banks' fast street cars and asked for a ride. During an earlier demonstration in another twin-turbo small-block car, the team nearly ran out of room while accelerating toward the car's top speed, and the stock brakes were quickly overwhelmed. That experience helped lead to the more formal red-car project.
Young remembers the red car first for its paint. Pontiac had supplied what he described as a worn magazine car, and Banks had it refinished by painters known for Ferrari work. The result was a $5,000 paint job-an enormous figure at the time-and a finish so deep and glossy that the staff were afraid to touch it. Mechanically, the car carried the familiar twin-turbo Banks engine package, beautifully finished and engineered.
One of the major challenges was the rear axle. The team used shortened Ford 9-inch assemblies, then considered the best available solution, but the torque was so severe that hard launches and acceleration would literally rip the gears out through the front of the housing. Banks responded by designing a heavy girdle around the housing and integrating the torque-arm attachment into it. Without finite-element analysis, he simply over-engineered the solution, accepting a few extra pounds of unsprung weight in exchange for reliability. The fix worked.
During testing, Banks and Young had already seen 190 mph in the car, at a time when the fastest production exotics were typically in the mid-150-mph range. On one run, Banks decided not to continue to 200 because the engine did not sound right. Young then drove the car back and, despite being told to take it easy, could not resist racing a Ferrari on Interstate 40 and pulling away from it uphill. Banks was furious because he suspected a problem and did not want to risk what he called the 'thousand-dollar ride'-driving a sick engine home and turning a minor issue into a major failure. Eventually, the red car officially reached 204 mph and became known as the fastest street-driven car in the world. It also drew international attention, including magazine covers in Europe and Australia.
A recurring theme in Young's stories is that these cars were not crude race-only machines. Even at roughly 1,400 horsepower, the blue car idled cleanly, was not excessively loud, and behaved like a normal street car with full accessories. That combination of civility and extreme speed was one of the team's greatest achievements. Young admits that driving such cars on public roads created a constant temptation to challenge Porsches and Ferraris, and he took obvious pleasure in surprising exotic-car owners with what appeared to be an ordinary American coupe.
He also recounts a moment that taught him to respect horsepower. While taking one of the turbo cars-this one an automatic-equipped convertible-to a car show early in the morning on the 605 freeway, he accelerated hard through the gears. As he approached another vehicle at around 100 mph, he lifted off the throttle. The chassis instantly unloaded and the car swapped ends so violently that he found himself traveling backward at roughly 100 mph toward the guardrail. The car stopped within about a foot of impact.
Banks explains that the convertible chassis had twisted heavily under power. When the load was suddenly removed, the stored torsional energy released and rotated the car. The company had already learned that these unibody F-bodies, especially convertibles and T-top cars, needed substantial reinforcement. Banks developed front-to-rear structural connections under the floor to control chassis twist. He also recalls breaking a T-top body so badly under power that it cracked behind the windshield and broke the glass, after which he avoided building further T-top versions.
Young offers a broader portrait of Banks as both engineer and leader. He describes him as intensely driven, highly professional, and able to move directly from drafting-board sketches to castings, kits, and finished products. In the pre-computer era, this work was done with paper drawings, calculators, and slide rules. Young remembers Banks' white lab coat as part of that professional identity, though the shop also knew him as someone with a sharp sense of humor and a constant appetite for practical jokes.
That engineering instinct extended beyond headline-grabbing supercars. Young initially questioned Banks' decision to develop one of the first turbo kits for the 6.2-liter diesel, wondering who would want to hot-rod a diesel truck. But the finished kit was meticulously executed, complete with every nut, bolt, and instruction needed for installation. It also included a boost gauge and a pyrometer, which at the time were unfamiliar tools to many customers but gave them a direct way to monitor load and exhaust temperature. The kit became a major success, selling in very large numbers.
Young recalls one customer who complained that the diesel turbo kit did not work. On a test drive, it became obvious that the owner simply was not loading the engine enough to build boost. Once Young drove the truck properly and used the gears to increase engine load, the turbo came alive and the customer immediately understood the difference. Banks compares that misunderstanding to an earlier marine customer who expected a turbocharged MerCruiser engine to make boost while revving on the trailer in the driveway, without any load on it.
Another example of Banks identifying an unmet need was the 200-mph speedometer developed for turbo Trans Ams and similar cars. Owners were pegging the stock speedometers and had no way to know how fast they were actually going. Young initially questioned why this should be Banks' problem, but the company produced factory-looking 200-mph speedometers, along with 8,000-rpm tachometers, and demand exploded. Many buyers wanted them even if their cars were nowhere near capable of those speeds.
Young's own role at Banks expanded far beyond driving and shop work. He eventually became one of the company's strongest salespeople, handling large monthly order volume by phone because, as he puts it, quality was easy to sell when he had seen the products developed from concept to finished part. He later moved into communications electronics, working for Motorola, outfitting police vehicles, and eventually helping install major encrypted radio systems such as the one at SoFi Stadium. He credits Banks with teaching him how to think like an engineer, how to pursue professional execution, and how to deliver results.
The episode closes with listener questions for Banks. On electromechanical valve actuation, he says the technology is overdue and potentially transformative because it eliminates many of the limitations imposed by camshafts, lifter acceleration, valve springs, deflection, and valve float. He sees heat rejection in the solenoid or actuator system as the likely limiting factor, but he admires the possibilities and points to Koenigsegg's Freevalve work as an example of what can be done when cost is less constrained. On diesel drag-racing engine choice, Banks explains why a V8 Duramax can offer advantages over an inline-six Cummins: shorter packaging, lower rotating inertia, and, at similar bore size and displacement, two additional cylinders' worth of valves and ports. That gives the V8 roughly 33 percent more breathing area per revolution at the same intake-manifold air density, allowing more power with less boost and less turbocharger and intercooler demand than an inline-six would require to match it.