Generally, rebuilding an engine you already own is cheaper than buying a crate engine, especially if you can perform the work yourself. However, crate engines offer warranties, predictable performance, and quicker installation, which can make them the better value in certain situations.
Cost breakdown: rebuilding an engine
The cost of rebuilding an engine hinges on parts, machining, and labor. Here is a breakdown of common expense buckets you’ll encounter when you decide to rebuild.
- Parts and gaskets: rings, bearings, piston rings, head gaskets, oil pump, timing set, valve seals, and other consumables.
- Core components: pistons, rings, bearings; upgrades (e.g., forged pistons) if you’re chasing higher performance.
- Machine shop work: honing and boring cylinders, decking the block, align-boring, crankshaft work, valve-seat work, and head resurfacing.
- Labor and assembly: assembling the short block, installing the timing and seals, and mounting accessories, plus engine installation into the vehicle.
- Optional upgrades and fixes: fuel system (pump, injectors or carb), ignition system, and cooling improvements.
Conclusion: A typical rebuild for a common V8, if you do most of the work yourself, can run roughly $2,000 to $5,000 in parts and labor. If you hire a shop to do disassembly, machining, and reassembly, expect roughly $3,000 to $6,000, with higher costs if significant machine work is required.
Cost and value of crate engines
Crate engines are new or remanufactured engines shipped to you with standardized bolt patterns and often optional electronics. The price reflects engine family, included components, and warranty. Here’s what to consider.
- Base price range by engine family: entry-level small-block V8 crate engines often start around $5,000 to $7,000; modern LS-based crates commonly run from about $7,000 to $12,000; high-performance or aluminum-block crates can exceed $15,000 and rise to $25,000 or more for specialized builds.
- What’s included: long block versus turnkey (including intake, carb or EFI, starter, and accessories), and whether electronics or harnesses come with the package.
- Warranty and support: most crate engines carry warranties (often 1–3 years for parts and workmanship) and local distributor support; rebuilding through a shop typically carries variable or limited warranty unless stated.
- Installation and compatibility: crate engines are designed for straightforward installation with standardized mounting, though installation labor is still required.
- Shipping and core charges: crate engines may incur shipping fees and a core charge, refunded when you return your old engine or core.
Conclusion: Crate engines generally cost more upfront than a DIY or shop rebuild, but they offer warranty, predictable performance, and faster downtime. All-in costs (engine plus installation) commonly range from about $6,000 to $15,000 for many common builds, with higher-end or specialty engines pushing higher.
Decision factors: rebuild vs crate engine
When weighing the options, buyers consider several practical factors. The following points help frame the decision.
- Your engine’s value and rarity: original or high-mileage units, or engines with scarce parts, may push you toward a crate engine if repairs become impractical.
- Budget and downtime tolerance: if you cannot be without the vehicle for long, a crate engine with warranty can reduce downtime even if the upfront cost is higher.
- Labor capacity and skills: DIY enthusiasts can save on labor, but professional builds may offer reliability and quality that offset higher prices.
- Performance goals: for stock replacements, a crate engine offers dependable performance; for a restomod or specific spec, rebuilding with targeted upgrades may be better.
- Warranties and risk: crate engines come with warranties; rebuilding transfers risk to the shop or your own workmanship, depending on warranties offered.
Conclusion: There isn’t a universal winner. For a typical daily-driver, rebuilding is usually cheaper if you can do the work and use stock parts. A crate engine provides warranty, convenience, and predictable results for those prioritizing reliability and speed to reinstall.
Summary
Bottom line: If you already own an engine and can manage the project or have a trusted shop, rebuilding tends to be cheaper upfront. A crate engine costs more initially but adds warranty, standardized performance, and simpler installation, which can save time and reduce downtime. The best choice depends on engine type, overall condition, desired performance, and how much risk you’re willing to accept.