We’re driven by one goal: to build engines that stand apart in power, reliability, and craftsmanship. Every Gear Heads built engine reflects decades of hands-on expertise with Ford, Chevy, and Mopar platforms—and our commitment to precision machining, advanced EFI systems like Holley and Emtron, and performance you can trust. Whether you’re looking for a fully custom powerhouse, a turnkey crate engine, or a DIY kit that lets you build your own masterpiece, we deliver American muscle and modern performance in every block we touch.
A Gear Heads built custom engine is more than a high-performance assembly—it’s an engineering partnership. We design engines tailored to your exact driving style, whether it’s street cruising, drag racing, or circuit performance. Using premium components sourced from trusted suppliers like Motorstate, we spec every detail: bore size, compression ratio, cam profile, and induction strategy. We combine precision machining with advanced EFI solutions like Holley Dominator or Emtron KV8 systems for pinpoint tuning and reliability. Our dyno validation ensures your engine isn’t just powerful—it’s dialed in for real-world use. From supercharged Coyote builds to LS-based monsters and classic Mopar big blocks, our custom engines blend craftsmanship and technology to deliver the ultimate driving experience.
Gear Heads built DIY engines are designed for enthusiasts who want to be part of the process without dealing with sourcing headaches or machining uncertainty. We fully machine, blueprint, and pre-fit your engine, verifying every clearance and spec. Then we disassemble it, pack it carefully, and send it to you as a kit—ready for you to assemble with confidence. This service is ideal for builders who crave hands-on experience but want the security of professionally matched components and precision machine work. Whether you’re assembling a Ford small-block, a high-winding Chevy LS, or a Mopar HEMI, our DIY engines bring professional-grade performance into your garage. It’s the perfect blend of craftsmanship, learning, and performance.
Our Gear Heads built crate engines are engineered for builders who want serious power without waiting months or gambling on unknown shops. We assemble, dyno test, and ship these engines fully ready for professional installation. Each crate engine carries the same high-caliber parts and machine work as our custom builds, ensuring you get consistent performance and long-term reliability. Whether it’s a Chevy LS swap for a street rod, a Ford small-block for your muscle car restoration, or a Mopar big block destined for the drag strip, our crate engines come with carefully developed EFI calibrations—often using Holley Terminator X or HP systems—for smooth startup and dependable operation. Our crate lineup is the fast track to modern horsepower for domestic performance vehicles.
Green Mountain Gear-Heads is your partner in performance. We specialize exclusively in domestic engines from Ford, Chevy, and Mopar. Our in-house machine shop delivers critical services like block truing, precision honing with torque plates, and detailed balancing work essential for high-horsepower builds. We integrate the industry’s top EFI systems—Holley for broad compatibility and Emtron for cutting-edge customization—ensuring your engine not only makes power but runs flawlessly under any conditions. Whether it’s a custom engine built for ultimate power, a crate engine for a classic swap, or a DIY kit that lets you turn wrenches yourself, a Gear Heads built engine is more than just horsepower—it’s engineering you can trust.
Let’s talk about how a Gear Heads built engine can transform your Ford, Chevy, or Mopar project. From street builds to all-out race machines, Green Mountain Gear-Heads has the knowledge, tools, and passion to make your vision a reality.
8 AM - 5 PM
Monday - Friday
85 Shunpike Rd, Williston, VT 05495