He Built a 36-Year Performance Shop Starting in His Basement | Donnie Walsh Jr. | D&D Performance
The Automotive Advantage
He Built a 36-Year Performance Shop Starting in His Basement | Donnie Walsh Jr. | D&D Performance The Automotive Advantage · Apr 15, 2026
He Built a 36-Year Performance Shop Starting in His Basement | Donnie Walsh Jr. | D&D Performance

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He Built a 36-Year Performance Shop Starting in His Basement | Donnie Walsh Jr. | D&D Performance
Term

slicks

Slicks are special race tires that have almost no tread. They grip the track really well for drag racing, but they usually don’t last long and aren’t for everyday driving.

Concept

pre-purchase inspection

No automotive concept matching this transcript segment was identified.

Term

nitrous bottles

Nitrous is a chemical boost you can add to a car for extra power, usually just for racing. The “bottles” are the tanks that hold that boost until you use it on the track.

Concept

drag racing time slips ("10s" / "fives" / "1060s")

In drag racing, people measure how fast a car runs the track using seconds. Saying someone went “in the 10s” or “in the fives” means the car was getting faster and faster—those are different speed/time levels.

Topic

5.0 Mustang pioneer days

The “5.0 Mustang” is a famous Mustang generation that became a starting point for a lot of performance and racing fans. “Pioneer days” means the early days when people were building and racing these cars before today’s modern parts.

Company

NMRA

NMRA is a drag-racing organization that runs events. It helps racers compete and gives performance shops a chance to show what they can do.

Company

FunFord

FunFord sounds like a Ford-focused racing event or program. The point in the conversation is that these kinds of events helped racers and shops get noticed and grow.

small block Chevy
Car

small block Chevy

“Small block Chevy” means a popular Chevrolet V8 engine used in a lot of hot rods and race cars. It was especially common in drag racing because it’s strong and has tons of aftermarket parts.

Concept

automotive aftermarket industry

The “aftermarket” is everything that happens after the car leaves the factory—like performance parts and tuning services. Racing often drives what people want to buy and install.

Term

LS

“LS” is a GM V8 engine family that became very popular for performance builds. People like it because it’s powerful, reliable when built right, and there are lots of parts to support it.

Mustang Fox Body
Car

Mustang Fox Body

The Mustang is Ford’s sporty car line. The “Fox body” Mustang is one older generation that many people consider important. It’s talked about because it helped shape what the Mustang became later.

Term

carbureted nitrous small block car

They’re talking about a drag-racing car that used nitrous (an extra power boost) on top of a smaller V8 engine. “Carbureted” means it used a carburetor to mix fuel and air before the nitrous helped it make more power.

Concept

10-second cars / 1060s

In drag racing, “10-second” is a bragging benchmark for how fast a car runs. “1060s” is basically shorthand for that kind of fast elapsed time, showing how quick the car was for its era.

Concept

going in the fives on those tires

“Going in the fives” means the car is running in the 5-second range for elapsed time. It’s an example of how much faster cars have gotten compared to the past.

Concept

drag racing era comparison (good old days vs modern competition)

They’re talking about how racing used to be less competitive and less advanced, and now everything is more serious. The point is that modern cars and racers have way more tools and experience.

Concept

LS days

They’re talking about the early days when GM’s LS V8 engines became a go-to for racers. Back then, you could start with an LS and some upgrades, then learn and get faster as you gained experience.

Term

turbo car

A turbocharger forces more air into the engine. More air can mean more power, as long as the engine gets the right fuel and tuning to match.

Term

supercharged car

A supercharger is a device that squeezes more air into the engine. That extra air helps the engine make more power, often with quick response.

Company

NOS

NOS is a company known for making nitrous systems. The speaker is saying their dad connected with the people behind those nitrous parts, which helped them get started.

Term

turbochargers

A turbocharger uses the car’s exhaust to spin a device that pushes more air into the engine. More air usually means more power, but it has to be tuned correctly to stay safe.

Term

jets

“Jets” are small parts that meter how much of a chemical (like nitrous or fuel) gets into the engine. If you use the wrong size, the engine can run too rich or too lean and get damaged.

Concept

Pro Mod

Pro Mod is a drag racing category where cars are heavily modified to go as fast as possible. These cars usually use advanced engine setups and strong safety/strength upgrades to survive repeated hard runs.

Company

Big Stuff

“Big Stuff” sounds like a performance parts/tuning company that helped with the build. Drag racers often rely on specialty shops for the right hardware and setup.

Term

DFI

DFI here means electronic fuel injection. Compared to a carburetor, it can make fuel delivery more consistent and easier to tune for racing.

Term

dry system

A “dry” nitrous setup means the nitrous system adds the gas, but the fuel still comes from the normal fuel system. That affects how you tune it so it makes power without running too lean.

Term

fuel injected

Fuel injection is a system that delivers fuel using sensors and controls instead of a carburetor. It can help the engine run the same way every time you make a pass.

Concept

technology taking it further

This is describing how performance gains came primarily from technology and calibration rather than completely changing the “combination.” In drag racing, incremental improvements in fuel delivery, ignition control, and forced-induction/nitrous strategy can translate into big time improvements.

Term

superchargers

A supercharger forces more air into the engine. More air usually means more power, which is why drag racers use them.

Company

Pro Charger

ProCharger is a company that makes superchargers. They’re saying they used a ProCharger supercharger setup for their racing program.

Topic

pro 5.0

“Pro 5.0” is a drag-racing category for certain Mustang 5.0 cars. They’re saying their supercharger setup was used throughout that racing class.

Term

880s

In drag racing, people often talk in time “ranges” like “8.80s,” meaning the car ran the track in about 8.8 seconds. It’s a quick way to say the car is pretty quick.

Term

950

“9.50” likely means the vehicle ran in about 9.5 seconds. In drag racing, those numbers are used to compare how fast different cars or setups are.

Term

unblown nitro jet boat

“Unblown” indicates the engine is not using a supercharger/blower to force more air into the engine; it’s typically naturally aspirated relative to a blown setup. In nitro racing, whether a setup is blown vs unblown is a major performance and tuning distinction.

Concept

practice tree

In drag racing, the “tree” is the set of lights that starts the race. A “practice tree” is used for test runs so you can practice your timing and get the launch dialed in before the real rounds.

Concept

reaction timing

Reaction timing is how fast you start moving after the lights tell you to go. In drag racing, being a little quicker (or smoother) can make a big difference.

Concept

progression of D&D performance

“Progression” here refers to how D&D Performance evolved over time—from where it started to what it does today. For listeners, this is a useful framing because performance shops often grow from one specialty (like drivetrain work) into broader car building and tuning capabilities.

Company

SVO

SVO (Special Vehicle Operations) was Ford’s performance-focused group. In this story, it helps explain why the family had racing knowledge and connections early on.

Concept

reinvesting racing revenue into the business

They’re basically saying they used the money they earned to keep building toward racing. Instead of taking shortcuts, they kept the family stable while putting the performance money back into the shop.

Part

rear axles

The rear axle is what helps send power to the back wheels. If you’re making more power than stock, people often upgrade it so it doesn’t break when you accelerate hard.

Company

Borg Warner

BorgWarner is a company that makes drivetrain parts like transmissions. Here, they’re mentioned because they were developing stronger versions of components used in performance builds.

Company

Tremac

Tremec makes performance transmissions. The idea is that stronger transmission options help when the stock gearbox can’t handle the added power.

Part

T5s

The T5 is a manual gearbox. In some older Ford performance setups, it can break when you add more engine power than it can safely handle.

Concept

performance transmission upgrades

When you make more power, the transmission may not be strong enough. Upgrades are ways to make the gearbox handle the extra stress without breaking.

Company

Ford Racing

Ford Racing is Ford’s performance-parts program. Here, they wanted to sell transmissions, but they weren’t willing to include the stronger upgrade pieces that performance customers often need.

Term

T5 parts

The “T5” is a specific transmission used in some Ford applications. “T5 parts” means parts made to repair or upgrade that transmission, so the shop’s early business was focused on one transmission type.

Term

transfer case stuff

A transfer case is the gearbox that routes power to the front and rear axles in four-wheel-drive (and some all-wheel-drive) vehicles. The speaker is saying they couldn’t buy transfer-case-related inventory from the distributor, which constrained what driveline categories they could sell.

Concept

minimum sales requirement

Sometimes parts companies require a new seller to meet a certain sales number in the first year. It’s basically a “prove you can move product” rule, and they’re saying they exceeded it.

Term

manual transmissions

A manual transmission is a car gearbox you shift yourself. You use a clutch pedal and a stick to choose the gear, instead of letting the car do it automatically.

Concept

mail order stuff

Mail order means customers didn’t have to come to the shop. The shop could sell parts and ship them to people in other places.

Topic

Super Ford

“Super Ford” sounds like a magazine or publication for Ford enthusiasts. They used it to place a small ad to find customers who were already interested in that kind of car.

Ford Super Ford
Car

Ford Super Ford

The Ford Super Duty Lariat Tremor is a heavy-duty pickup truck. It’s meant to handle tough jobs and also be better for rough roads than a basic truck. The “Tremor” part usually means it has extra off-road features.

Concept

print ad

A print ad is a business ad you see on paper, like in a newspaper or magazine. They’re saying early on, people would see the ad and call the shop to book work.

Concept

rotary phone

A rotary phone is an old-style phone where you dial by turning a round dial. They’re joking that back then, calls were probably coming in through a phone like that.

Concept

local racetrack

A local racetrack is a nearby place where cars race. They’re saying the shop got customers because they were active in racing and people recognized them from events.

Topic

racing stuff

“Racing stuff” just means what they did for motorsports—helping race cars or working around racing events. They’re saying that racing presence helped them get customers early.

Concept

home-based shop operation

They were running the business from their house, not a warehouse. That means they had to pick up and unload parts themselves because they didn’t have big shipping/loading equipment.

Concept

rebuilt units

A rebuilt transmission is a used one that gets taken apart and fixed with new parts where needed. It’s usually cheaper than brand-new, but it’s meant to work like it should.

Concept

overstock units

Overstock just means they had extra parts sitting in inventory. That can be helpful because it lets them sell and ship transmissions faster.

69 Camaro
Car

69 Camaro

A “69 Camaro” is a 1969 Chevrolet Camaro. It’s a classic muscle car that a lot of people still build and upgrade today, including with pre-packaged “crate” engines.

Concept

crate engines

A crate engine is a brand-new engine you can buy as a complete package. Instead of hunting down lots of individual parts, you get an engine that’s ready to install.

Term

horsepower right out of the dealership to the tire

They mean the car was already making strong power straight from the factory, measured at the wheels. Testing at the tires shows what actually gets to the road, not just what the engine claims.

Ford Mustang GTD
Car

Ford Mustang GTD

The Ford Mustang GTD is a more extreme, performance-focused version of the Mustang. The podcast is comparing its expected power to a less powerful Mustang GT. The main point is that the GTD is meant to be much stronger.

Term

pulley

A pulley is part of the supercharger drive system. If you change it, the supercharger spins faster, which can make more boost and power—if the car is tuned correctly to match.

Term

tune

A tune is when a shop updates the car’s computer settings. After mods like a pulley or intake, the tune makes sure the engine gets the right fuel and timing so it runs strong without overheating or knocking.

Term

cold air

“Cold air” usually means an intake that brings in cooler air from outside the engine bay. Cooler air helps the engine make more power, especially when the car is tuned for it.

Term

450, 460 to the tire

“To the tire” means the power number measured at the wheels. It’s usually lower than the engine’s advertised horsepower because some power is lost as it goes through the drivetrain.

Term

blower noise

“Blower noise” is the sound a supercharger makes when it’s pushing air into the engine. People like it because it’s a fun, obvious sign the car is making boost.

Term

Steggy port

A “Steggy port” refers to a specific aftermarket porting/modification of intake components associated with supercharged applications. Porting can improve airflow and boost efficiency, which helps power and throttle response when paired with the right tune.

Term

transmission drive line parts

This phrase means parts that help send power from the transmission to the wheels. When you make more power, these parts may need upgrades so they can handle the extra twisting force.

Term

race car

A “race car” is a car built or prepared to compete. It usually needs different setup and maintenance than a normal street car.

Term

transmission side

The “transmission side” is the part of the car that handles shifting gears. In the shop, that meant one person focused on transmission repairs or upgrades while the other handled the performance upgrades.

Concept

two separate entities but still under the same roof

This describes an operational structure where a shop runs two distinct workflows—e.g., transmission work and performance work—while sharing the same physical space. It’s a common approach in performance garages because it allows specialization without losing the benefits of shared tools, staff, and logistics.

Concept

dyno

A dyno is a machine that tests your car’s power. Instead of guessing, it measures how much horsepower and torque the engine makes while the car is strapped down.

Concept

revenue mix: parts sales vs customer build cars

They’re talking about where the shop’s money comes from—selling parts versus building cars for customers. Different types of work can pay differently, so the shop has to balance them.

Concept

itemize it out

Instead of giving one big price, the shop lists what they’re charging for each part and how many hours of work it takes. That way it’s easier to understand why the total ends up being higher than people expect.

Concept

labor hours

Labor hours are basically how long the mechanic says the job will take. Even if the parts don’t look expensive, the time spent diagnosing and doing the work can add up.

Concept

restomod

A restomod is basically a classic car that gets upgraded with newer parts. The goal is to keep the old-school look, but make it drive and perform better like a modern car.

Topic

repetition vs changing platforms in a performance shop

They’re talking about how shops do better when they can repeat the same kind of work on similar cars. But it’s hard because new car models keep changing what the shop has to do next.

Shelby GT500
Car

Shelby GT500

The Shelby GT500 is a very powerful version of the Ford Mustang. It’s made to be faster and more performance-focused than a regular Mustang. People bring it up because it’s one of the most well-known high-power Mustangs.

Concept

itemized quote

Instead of giving one lump-sum number, an itemized quote lists each part and each labor step separately. That way you can see where the money is going and it’s easier to understand the total bill.

Topic

pricing transparency with line-item estimates

They’re talking about how to explain repair costs clearly. By showing parts and labor separately, customers can better understand what they’re paying for.

Concept

labor vs parts markup

Shops often make money in two places: the parts they install and the labor time they charge. The percentages can be different, so an itemized breakdown helps customers understand why the bill looks the way it does.

Topic

Fox Mustang show customer service story

This part is a story about how the shop helped a customer at a Mustang event. The key takeaway is that they went above and beyond to get the car’s transmission fixed in time.

Concept

rebuilt the transmission overnight

They’re describing a transmission rebuild done very quickly—overnight. That means the shop didn’t just “patch” it; they took the transmission apart, fixed what was wrong, and got it back together fast so the customer could make the show.

Concept

over deliver

Over-delivering means doing a little more than what the customer expected. For car parts and repairs, that can mean you get the right part quickly and keep the customer updated, so they’re not stuck waiting.

Term

ship it

“Ship it” means sending the car or parts to another place instead of working on it where it is. It can be helpful for customers, but it also costs money and takes time.

Concept

shop margins are tiny

Shop margins are the profit left over after all the bills. If the shop has a bad day—like expensive equipment breaking—it can hurt the business a lot because there isn’t much extra money to absorb the loss.

Term

gas is expensive

If gas prices go up, people have less money left over. That can make them delay buying extra car stuff like upgrades or maintenance beyond what’s required.

Concept

down market

“Down market” means moving to cars that are still cool and fast, but not the absolute most expensive ones. It’s basically a budget-and-reality adjustment.

Golf Gtds
Car

Golf Gtds

The Golf is a compact car model. The podcast is talking about it in terms of where it sits in the market—like whether it’s priced or positioned lower than before. That affects who it’s aimed at and what buyers expect from it.

03 Cobra
Car

03 Cobra

An “03 Cobra” is a 2003 Ford Mustang SVT Cobra. It’s a special Mustang built for performance, and a lot of people love them because they’re fast and there are lots of parts and upgrades available.

Concept

resurgence

“Resurgence” means people are starting to want those older performance cars again. Instead of buying newer stuff, enthusiasts go back to the classics because they’re fun and there are lots of upgrades available.

2020 GT 500 track pack car
Car

2020 GT 500 track pack car

That phrase means a 2020 Ford Mustang Shelby GT500 with the Track Pack. It’s basically the version of the GT500 that’s set up to handle track driving better than a standard one.

Concept

made a thousand horsepower to the tires

“To the tires” means the power was measured at the wheels. It’s a real-world number showing how much thrust the car is actually putting down, and it’s usually different from the horsepower number you see in brochures.

GT 500
Car

GT 500

They mean the Ford Mustang Shelby GT500, which is the super high-performance Mustang. The customer was thinking about selling it, but the real goal was getting back into the older Cobra.

Concept

revenue to do this

The hosts are talking about the business side of running a performance shop: you need revenue to keep the lights on, pay staff, and continue doing customer work. It’s a reminder that even when the work is enthusiast-driven, shops still operate like businesses with cash-flow needs.

Term

$150,000 car

They’re basically saying that a cheaper car is often more fun to live with, even if you could afford something much more expensive. Expensive cars can cost a lot more to fix, so the “stress level” is different.

Term

$40,000 car

They’re saying that a $40,000 car can feel better to drive and own because it’s usually simpler and cheaper to fix. You’re less worried about expensive parts if something breaks.

Term

rear shot

“Rear shot” sounds like they mean damage to the back of the car. Rear repairs can be costly because the parts may be harder to find or more specialized.

Concept

parts availability

They’re saying that the real issue isn’t just the price of the car—it’s whether you can actually get the parts quickly if something breaks. If parts are hard to find, repairs take longer and cost more.

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