How Much Should You Spend on an Engine for Your Restomod Build?

Building a restomod is a passion project that blends classic styling with modern performance. One of the biggest decisions—and expenses—you’ll face is the engine. How much you should spend depends largely on your budget, goals, and expectations for performance and reliability. Broadly, there are three main categories of engines you’ll encounter: junkyard engines, crate engines from established builders like Blueprint Engines, and high-end race engine builders such as Nelson Racing Engines. Let’s break down the costs and implications of each option.

1. Junkyard Engines: Budget-Friendly but Risky

Cost Range: $500 – $3,000 (plus rebuild costs)

For many DIY builders, the junkyard is the first stop. Junkyard engines can be extremely cost-effective and provide a starting point if you’re looking to get your project running on a tight budget. Popular choices often include LS-series Chevy engines or Ford Coyote motors, which are plentiful and adaptable.

Pros:

• Lowest initial cost
• Wide availability of cores
• Great for builders who enjoy the challenge of tearing down and rebuilding an engine

Cons:

• High risk of hidden problems (wear, cracks, poor maintenance history)
• Rebuilds and upgrades can quickly double or triple your budget
• Limited warranty (if any)

Best For: Builders who want to learn the ins and outs of engine rebuilding, have the tools and time to invest, and aren’t afraid of surprises.

2. Crate Engines from Builders like BluePrint Engines

Cost Range: $5,000 – $20,000

Crate engines are one of the most popular choices in the restomod world, and they’re far more flexible than many realize. Companies like Blueprint Engines, ATK, and Chevrolet Performance offer everything from short blocks and long blocks for those who want some DIY involvement, to turnkey, dyno-tested engines that are ready to drop in. Some even offer complete packages with matched transmissions, saving you time on sourcing parts and ensuring proper compatibility.

Pros:

• Predictable cost and performance
• Warranty support and reliability
• Options for different involvement levels: DIY builders can finish a short block, while turnkey buyers can drop it in and go
• Wide variety of horsepower ranges and fueling options
• Packages sometimes include transmissions for a more complete solution

Cons:

• More expensive than a junkyard pull
• While customizable, choices are still within a predefined catalog
• Still requires supporting upgrades (cooling, wiring, fuel system)

Best For: Builders who want reliable performance but also value flexibility—whether that’s building out part of the engine themselves or purchasing a ready-to-run solution with a warranty.

3. Race Engine Builders like Nelson Racing Engines

Cost Range: $25,000 – $50,000+

For those who want the ultimate in power and exclusivity, companies like Nelson Racing Engines build custom, high-performance race-inspired powerplants. These engines often push past 1,000 horsepower with twin turbos, custom machining, and premium internals. They’re overkill for most street builds, but they deliver unmatched bragging rights and performance.

Pros:

• Maximum horsepower and cutting-edge engineering
• Built-to-order for your exact specs
• Perfect for show cars, drag builds, or extreme restomods

Cons:

• Extremely expensive
• Not practical for daily driving
• Supporting parts (drivetrain, brakes, suspension) will also need to be upgraded to handle the power, adding even more cost

Best For: High-budget builds where performance and prestige matter more than practicality or cost.

Final Thoughts: Balancing Budget and Goals

So, how much should you spend? For most restomod enthusiasts, a crate engine in the $7,000 – $15,000 range strikes the ideal balance. Unlike a junkyard pull, crate engines provide reliability, warranty support, and flexible options—from DIY-friendly short blocks to turnkey powerplants with transmissions included. This makes them accessible for both hands-on builders and those who want instant performance.

Junkyard engines remain the cheapest entry point but come with risks, while race engine builders are the pinnacle for those with deep pockets and extreme performance goals.

Ultimately, your engine decision should reflect not just your budget, but your build philosophy—whether that’s a learning experience, a practical cruiser, or an over-the-top statement car.

Restomod Engine Options at a Glance

Watch RestoMods fully restore this 1970 Charger and drop in a brand new Crate 426 HEMI From BluePrint Engines: