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Classic Auto Mall - #236 - Stewart Howden with Guests Chuck Sprague and Keith Martin

Classic Auto Mall - #236 - Stewart Howden with Guests Chuck Sprague and Keith Martin

Classic Auto Mall SHOW Mar 26, 2026 62 min
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About this episode

Classic Auto Mall Show #236 mixes fresh inventory talk with two deep dives: Chuck Sprague’s Penske-era engineering and race-team management stories, and Keith Martin’s real-world Porsche ownership pain. Sprague covers how Penske’s sponsorship structure, parts organization, telemetry, and transporter/gearbox innovation helped deliver dominant IndyCar performance, plus lessons on training and spare-car readiness. Martin then recounts a nail-in-tire roadside disaster on his Porsche C4S, the expensive wheel/tire fallout, and the looming IMS bearing decision—ending with practical collector-car advice.

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Technical Too Afraid to Ask
Car

Pontiac Trans Am

"Like when Trans Am, Pontiac Trans Am had to pay the Trans Am series like 50 or five dollars,"

The Pontiac Trans Am is a famous performance car name from the muscle-car era. Here it’s used as an example of how car names can be tied to racing branding.

Concept

inventory

"Well, so with the new inventory coming in, do you think we went up or down? How many cars in inventory, Steve? ... But we are getting some great cars in and of course the stuff that we get in that's great goes very quickly."

“Inventory” just means how many cars are sitting around and available to buy. If more cars come in, you have more choices; if cars sell fast, there are fewer left.

Concept

Amish country

"[150.2s] Beautiful country. [150.7s] Amish country. [151.4s] Watch out for the buggy. [152.8s] You don't want to come around the corner a little too fast."

This is a way people describe areas where the Amish live. When you drive there, you may see horse-drawn buggies, so you have to slow down and be extra careful around corners.

Concept

marina

"You know, we keep our boat down at Marina down and there was nowhere to boat around here."

A marina is a waterfront facility that provides docking and services for boats. The speaker’s mention of keeping a boat at a marina sets up how they access the water and manage boating logistics.

Concept

Watkins Glen

"I was working for an engineering company in Ohio and I'd gone up to Watkins Glen and I was in the neighborhood."

Watkins Glen is a famous motorsports venue in New York, known for road racing events. The speaker mentions going there as part of their early racing and mechanical background, linking the discussion to performance driving culture.

Concept

Purdue Grand Prix

"[226.6s] Purdue Grand Prix, which is a little go-kart race. [229.2s] Right. [229.8s] And unlike a lot of college races, this actually heads up competition."

This is a go-kart race event at Purdue University. In this story, it’s described as real racing against other teams, not just trying to beat a time on your own.

Concept

heads up competition

"[229.8s] And unlike a lot of college races, this actually heads up competition. [233.3s] You don't run against a stopwatch. [234.7s] You're actually all on the racetrack."

“Heads up” competition means drivers race directly against each other in the same session, rather than being ranked purely by individual lap times. The distinction matters because it changes strategy, risk, and how you develop racecraft.

Concept

motorsports engineering

"Well, the good news is you can get a degree in motorsports engineering now. When I was at Purdue, you would have to create your degree under interdisciplinary engineering."

Motorsports engineering is basically engineering for racing. It’s about using science and math to make race cars faster, safer, and more reliable on a track.

Car

Lola T70

"I remember seeing a picture of that Lola T70 on the cover of a magazine. It was just beautiful."

The Lola T70 is a famous old race car from the 1960s. People love it because it looks cool and it was a big deal in racing back then.

Concept

livery

"Do you have a favorite livery of Penske cars? Is there one particular one that you love the most?"

A livery is basically the car’s “look”—the colors, decals, and sponsor graphics. It’s how the team shows its identity on track.

Concept

sponsor

"Yeah, it's always funny though, you know, the cars are so graphic up and all these stickers [439.1s] and logos and sponsors and all that and you wonder a guy, you know, he's got a business [442.8s] card size sticker on the side of a car going 200 miles an hour."

In motorsports, sponsors pay for visibility—logos, decals, and branding on the car and driver gear. The discussion here highlights how sponsorship value is partly about marketing exposure, not just on-track performance.

Brand

Mercedes

"I'm a Porsche guy and Mercedes guy. I'm actually a Mercedes guy more than anything, so it's, I don't know a lot about some of these things."

Mercedes is a famous German car brand, known for luxury and performance. They’re just saying they know more about Mercedes than about some of the other stuff being discussed.

Brand

Mobile One

"I mean, we had Mobile One and Penzoil and various other companies over the years, but yeah, that was big."

Mobile One makes motor oil. Race teams and car owners use it to help protect engines, and it also shows up as a sponsor.

Concept

Formula One

"from, you know, Formula One ranks or at least pre Formula One stuff and came over to drive [707.8s] over it with IndyCar to varying degrees of success."

Formula One is the most famous kind of open-wheel racing. The rules and car development are very tightly managed, so it’s a big deal when someone moves between racing series.

Concept

Pit Lane

"[762.9s] Oh, everybody in Pit Lane respected each other. [765.5s] Everybody realized that, you know, things may happen that aren't intentional and, you [769.8s] know, but generally speaking, I remember watching seven cars come out of the cork"

Pit lane is where race teams pull in to change tires, refuel, or do quick repairs. Everyone has to be careful because cars are still moving at high speed nearby.

Term

gurney flaps

"...we had built a system where we could slide the gurney flaps or wickers into the wing instead of bulging them on."

A gurney flap is a small “lip” on the back edge of a wing. It helps push the car down onto the track so the tires can grip better.

Concept

Penske

"Well, I can tell you that, uh, you know, watching, uh, you know, Roger Penske's way and how [1017.9s] he does business and, and all of that has been a lot of fun."

Penske is a big name in racing and business. Roger Penske runs a team and company that’s very influential in IndyCar, and the conversation here is about how he handles business and people.

Concept

telemetry

"And once telemetry came on and we developed tire pressure sensors in 1994, we saved cars. We saved engines because of telemetry."

Telemetry is the data the race team gets from the car while it’s running. It helps them see what’s going wrong before it becomes a failure.

Concept

seat of the pants

"technology is amazing. Seat of the pants and the driver's feedback has still got to have a significant amount of, you know, cache and what you do."

It means how the car feels to you while you’re driving. Even if a simulator looks realistic, it can’t fully copy that real feedback from the seat and hands.

Term

RPM

"I mean, thank God we didn't try to road race that engine. We would have broken everything in the car, but as it was, one of the things that came up early on is we're going from 14,000 to 10,000 RPM and from 300 foot pounds to 500 foot pounds of torque."

RPM tells you how fast the engine is spinning. More RPM can mean more power, but it also puts more stress on the engine parts.

Concept

Indy 500

"You had sent us some photographs and one with you and Roger and Danny Sullivan at the Indy 500 standing out there and you and those red pants, man."

The Indy 500 is a huge auto race in the U.S., held every year in Indianapolis. It’s so big that people often travel there and buy or wear team and sponsor gear.

Brand

Bosch

"I had Bosch. I had all that stuff, like one of each."

Bosch is a well-known auto parts company. In racing, you’ll often see their name on gear because they supply technology and sponsor teams.

Concept

diecast

"Well, I sort of got more diecast than anything to the truth. There's a GMP was the first to start doing Penske diecasts. Great, great diecasts."

Diecast are scale model cars, usually made with metal. People collect them because they look like real race cars from specific teams or years.

Concept

test rides

"[2129.9s] I went into the local dealer and they were not giving test rides and, you know, [2133.8s] everything else."

A test ride is just a chance to drive the car before buying. It helps you see how it feels in real traffic, not just in photos or reviews.

Term

variable valve timing

"That variable valve timing, when it hits up there to about what 9,000 it was and the, no, it was, it was, well, there are two things."

Variable valve timing is a technology that helps the engine open its valves at the right times for different speeds. That’s how the car can feel strong both at lower and higher RPM.

Term

turnkey

"I want to get rid of it turnkey. Sure. But, uh, yeah, I mean, I love the Acura, the Dan SX, you know, I told people, you can bulldoze the door down or you can pick the lock."

“Turnkey” means it’s ready right away. They’re saying they want to sell it in a condition where the buyer doesn’t have to fix or prepare much.

Concept

consignment

"If you'd like to know all the advantages of buying and selling a car through consignment, the information is available on our website, or you can talk to a classic car specialist who can answer all your questions."

Consignment means the car owner lets a shop sell the car for them. The shop usually takes a fee, and the owner gets the rest. It can be convenient because you can shop many cars in one place, but you should still check the car’s condition and history.

Term

Turbo hydramatic 350

"[2882.3s] That's right. [2882.6s] That's when you would have seen that kind of custom. [2884.6s] Turbo hydramatic 350 and an upgraded chassis."

This is a GM automatic transmission called the TH350. It’s a common classic-car gearbox because it’s strong and works well for performance builds.

Company

Costco

"didn't you try Costco? Why didn't you try discount tire?"

Costco is a big store you usually need a membership for. They sometimes have deals on tires, so the speaker is comparing it to other tire shops.

Company

eBay

"as a guy in town, I went on to social media and posted that I was looking for when I found out, uh, there's a lot of the wheels on eBay. Those are pretty common cars."

eBay is a website where people sell items to each other, including car parts. The speaker is saying they looked there because the wheels weren’t easy to find locally.

Term

Facebook marketplace

"That'd be interesting to see how that, that's why the invented Facebook marketplace. That's true."

Facebook Marketplace is an online classifieds platform where people buy and sell cars, parts, and even whole engines. In the context of classic cars, it’s often used to source donor parts quickly, which can reduce downtime and sometimes cost.

Term

two speed power glide

"If one of one, a guy put a 350 Chevy in the back of a 9-11, hmm, that ought to be an interesting thing, had to tilt it a little with a two speed power glide."

A “Powerglide” is a type of automatic transmission. “Two-speed” means it only has two gear ratios, and racers sometimes used it because it can be strong and straightforward for certain builds.

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