You Don't Know Jack!

Roush Performance

You Don't Know Jack: Unveiling Roush - From Motorsports to Engineering ExcellenceWelcome to "You Don't Know Jack," the podcast that unravels the fascinating world of Roush and its wide array of services. If you've ever been curious about Roush and its extensive offerings, spanning from its performance company to motorsports, engineering, and everything in between, this podcast is your ultimate guide. Join your hosts, Jack Roush Jr and Josh Massab, as they take you on an enlightening journey deep into the heart of Roush.  With each episode, "You Don't Know Jack" features exclusive interviews with Roush experts, engineers, and industry luminaries, all sharing their perspectives on cutting-edge technologies, high-performance vehicles, and groundbreaking solutions that built Roush's legacy.

Episodes

  1. May 15

    How Kohr Motorsports Turns Engineering Savvy Into Race Wins

    If you’ve ever bolted parts onto your Mustang and sworn it “felt faster,” this conversation is going to challenge you in the best way. We’re joined by Dean Martin, owner of Kohr Motorsports and a longtime force in Mustang road racing, plus Chandler Wheat from the Roush Performance team, who lives in both worlds as a portfolio manager by day and a GT4 tire engineer by night. What starts as two “I kind of fell into it” origin stories quickly turns into a masterclass on how real speed gets built, tested, and protected in pro racing.  We dig into the relationship between driving and engineering: how a driver learns to describe what the car is doing, why that translation is gold to an engineer, and how the wrong change can waste a session if you’re not honest. Dean and Chandler also get specific about vehicle dynamics and suspension setup, including why “lower and stiffer” isn’t automatically better, how sway bars can be misunderstood, and why coilovers are about corner balance and crossweight, not just closing wheel gap. Dean shares one of the most overlooked steps after lowering a car: neutralizing suspension bushings so you don’t bake in preload that hurts ride, grip, and alignment.  From there we zoom out to the part fans rarely see: motorsports logistics. Flights, hotels, tools, wraps, parts, prep, and the chaos of race weekends where a tiny failure can flip you from hero to zero. Dean walks through Kohr Motorsports’ recent plans, teething pains with new cars, A/B testing old vs new hardware ahead of Mid-Ohio, and the emotional swings that define IMSA and GT4 racing, from perfect races that still get stolen to wins you never forget. If you enjoy Mustang GT4, IMSA racing, race team management, tire testing, and practical performance engineering, hit subscribe, share this with a racing friend, and leave us a review. Let us know what you'd like to hear about next!

    52 min
  2. 03/28/2025

    Sketch. Rev. Repeat. The Creative Side of Roush

    Step into the hidden world of automotive design as we uncover the creative genius behind Roush's most impressive vehicles. Kevin and Dhruv from Roush Creative Services—the 65-person team responsible for transforming concepts into head-turning reality—reveal how they blend artistry with engineering to create machines that perform as spectacularly as they look. Ever wondered what separates truly exceptional vehicle design? According to our guests, the secret lies in evolutionary rather than revolutionary changes that honor brand DNA while pushing boundaries. The Roush F-150 exemplifies this philosophy with its innovative integrated lighting that brings the Roush brand to life without abandoning the signature elements loyal customers recognize. This delicate balance of tradition and innovation creates vehicles that remain visually compelling decades after their release. What truly distinguishes Roush Creative Services is their comprehensive approach—from initial sketches and 3D modeling to full-size prototypes and production-ready designs. Their work extends far beyond what most imagine, encompassing everything from high-performance Mustangs and F-150s to boats, aircraft, and even spacecraft for major companies. This diversity of experience enriches their automotive designs with perspectives that wouldn't emerge in a more narrowly focused studio. The future of design at Roush embraces cutting-edge technology like VR modeling and AI-assisted rendering, not to replace human creativity but to amplify it. These tools allow designers to explore more possibilities faster while ensuring the human touch remains central to every Roush vehicle. After all, as Kevin and Dhruv explain, creating something that makes you look back after parking—that head-turning quality that defines a truly exceptional design—remains an art beyond what technology alone can achieve. Subscribe and follow us on social media to continue exploring the innovation, engineering and raw passion behind everything Roush creates. The design journey from sketch to showroom is just one fascinating aspect of the Roush story we're excited to share. Let us know what you'd like to hear about next!

    38 min

Ratings & Reviews

About

You Don't Know Jack: Unveiling Roush - From Motorsports to Engineering ExcellenceWelcome to "You Don't Know Jack," the podcast that unravels the fascinating world of Roush and its wide array of services. If you've ever been curious about Roush and its extensive offerings, spanning from its performance company to motorsports, engineering, and everything in between, this podcast is your ultimate guide. Join your hosts, Jack Roush Jr and Josh Massab, as they take you on an enlightening journey deep into the heart of Roush.  With each episode, "You Don't Know Jack" features exclusive interviews with Roush experts, engineers, and industry luminaries, all sharing their perspectives on cutting-edge technologies, high-performance vehicles, and groundbreaking solutions that built Roush's legacy.