Over 35 years of building engines and transmissions for classic American muscle cars, street rods, drag racers, and trucks in the Charleston, SC area. If it is domestic and it needs power, LionHeart Racing delivers.
From mild to wild, every engine and transmission leaves our shop ready to perform. Each build is assembled by hand, inspected to spec, and tested before delivery.
High-output engine packages designed for serious horsepower. Whether you need a streetable 400+ horse small block or a purpose-built big block pushing four figures, we engineer every combination for maximum reliability and power. Forged internals, ported heads, and precision assembly come standard.
Factory-spec rebuilds that bring tired engines back to life. We machine all components in house, replace wear items with quality parts, and reassemble to OEM tolerances. Perfect for classic restorations, daily drivers, and fleet vehicles that need dependable power without modification.
Stock and performance transmission builds for automatics and manuals. We rebuild TH350s, TH400s, 4L60Es, Powerglides, and more with upgraded clutch packs, shift kits, and hardened internals. Every transmission is bench tested and calibrated to handle the power your engine puts out.
Purpose-built race engines for bracket racing, heads-up competition, and everything in between. We build combinations tailored to your class, your goals, and your budget. Nitrous-ready, supercharged, or naturally aspirated, each engine is dyno-proven before it ships and backed by our track record.
Light and heavy-duty truck powertrains built to work hard. We service everything from half-ton pickups to commercial vehicles, including diesel engine rebuilds and heavy-duty automatic transmissions. Towing, hauling, or daily use, we build it to last and back it with confidence.
Matched engine and transmission combos ready to drop in and run. We take the guesswork out of pairing components by building complete packages with a torque converter, flexplate, and accessories that work together from day one. Tell us your car, your goals, and your power target, and we handle the rest.
Every project starts with a conversation. Tell us what you are working on and we will put together a build plan that fits your goals and your budget.
START YOUR BUILDReal builds from our shop. Classic American muscle, race engines, transmission rebuilds, and heavy truck work. No imports, no modern cars, just good old fashioned American iron.
LionHeart Racing has been serving the Charleston, SC area for over 35 years, supplying engines and transmissions for all makes and models of classic American cars. We specialize in domestic muscle cars, street rods, rat rods, 4x4s, and backyard race cars. If it is American made and runs on a V8, we build it.
Our drag racing team has won local championships, and we were voted SDRA Mechanic of the Year in 2005. That track experience goes straight into every engine and transmission we build. We understand what parts hold up under pressure because we have put them there ourselves.
We also offer light and heavy truck engines and transmissions, custom builds for street cars and motorcycles, and performance packages at any level. Horsepower, NOS, turbos, blowers, or a reliable stock rebuild for your weekend cruiser. Whatever the project, LionHeart delivers.
"The engine LionHeart built for my Nova has been bulletproof for three seasons at the track. I would not trust anyone else with my builds."
Have a project in mind? Need a quote on a rebuild or a custom build? Reach out and let us know what you are working on.