In Stock
Inspected & Documented
Condition notes recorded before palletizing.
30-Day Startup Warranty
Covers block, heads and internal moving components.
In Stock & Ready to Freight
Crate Engines
Chevrolet Performance Crate Engines 12677823
$4,157.75
+ $295.00 flat-rate insured LTL freight
(details)
$4,452.75 delivered to the continental US
- Palletized and heavy shrink-wrapped for freight
- LTL carrier delivery with optional liftgate service
- Ships in 1–2 business days from Los Angeles, CA
- Transit typically 3–7 business days, continental US
Secure checkout by Stripe
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
Chevrolet Performance Crate Engine (12677823), Reliable Small-Block Power for Your Build!
Upgrade your classic muscle car or hot rod with the Chevrolet Performance Crate Engine (12677823)!
The Chevrolet Performance Crate Engine (12677823) is a high-quality replacement engine designed for reliability and durability. Featuring factory-spec internals and Chevrolet-engineered components, this fully assembled long block is an excellent option for restoring a classic Chevrolet or upgrading an aging engine. Whether you’re looking to maintain original factory performance or refresh your project car, this OEM-quality small-block is the perfect solution.
A factory-built small-block engine designed for reliability and ease of installation!
Requires proper fuel system, cooling components, and exhaust system for installation.
What’s Included in the Chevrolet Performance Crate Engine?
Fully Assembled Crate EngineDesigned for plug-and-play compatibility
Factory-Spec Engine Block & InternalsEnsures long-term durability and smooth operation
OEM-Spec Cylinder HeadsProvides efficient airflow and fuel combustion
Timing Cover & Valve Covers InstalledReduces installation time and complexity
EXCLUDES intake manifold, carburetor, exhaust, fuel system components, and accessories.
Technical Specifications
| Feature | Details |
|---|---|
| Brand | Chevrolet Performance |
| Manufacturer’s Part # | 12677823 |
| Product Type | Crate Engine |
| Summit Racing Part # | NAL-12677823 |
| Assembled? | Yes |
| Engine Block Material | Cast Iron |
| Cylinder Head Material | Cast Iron or Aluminum (varies by model) |
| Engine Balance | Internal |
| Compression Ratio | Factory-Spec |
| Camshaft Type | Hydraulic Roller or Flat-Tappet (varies by model) |
| Rear Main Seal Style | 1-Piece |
| Induction System | Carbureted or EFI (dependent on setup) |
| Intake Manifold Included? | No |
| Carburetor Included? | No |
| Distributor Included? | No |
| Oil Pan Included? | Yes |
| Valve Covers Included? | Yes |
| Timing Cover Included? | Yes |
| Water Pump Included? | No |
| Harmonic Balancer Included? | No |
| Flexplate Included? | No |
| Flywheel Included? | No |
| Air Cleaner Included? | No |
| Spark Plugs Included? | No |
| Spark Plug Wires Included? | No |
| Computer Included? | No |
| Wiring Harness Included? | No |
| Supercharger Included? | No |
| Quantity | Sold Individually |
Designed for classic Chevrolet builds, reliable replacements, and performance upgrades!
Fitment & Compatibility
Perfect for Chevrolet Small-Block Applications & Engine Swaps
Compatible with Most GM Performance Accessories
Designed for Classic Chevrolet Vehicles & Restorations
Confirm engine specifications and compatibility with your specific vehicle before ordering.
Installation Notes & Recommendations
Professional Installation RecommendedEnsures proper fitment and performance
Requires Proper Fuel System & Ignition ComponentsNot included with the crate engine
Cooling & Exhaust System Compatibility NeededMust be matched to vehicle’s drivetrain and components
Not emissions-certified, check local regulations before installation.
Frequently Asked Questions (FAQ)
What vehicles is this engine compatible with?
- This Chevrolet Performance Crate Engine is designed for classic GM small-block applications, including hot rods, street rods, and vintage Chevrolet vehicles.
Does this engine come fully assembled?
- Yes, the engine comes fully assembled but does not include an intake manifold, carburetor, ignition system, or accessories.
Can I install this engine in a modern vehicle?
- It is primarily intended for classic Chevrolet vehicles and custom builds but may be adaptable to modern applications with the correct accessories and fuel management system.
What fuel does this engine require?
- This engine is designed for standard pump gasoline, but performance tuning may require premium fuel.
Is this engine covered under warranty?
- Warranty details vary by supplier, please check with your retailer for specific coverage.
Order Your Chevrolet Performance Crate Engine Today!
Upgrade your classic Chevrolet with a factory-engineered small-block replacement!
OEM-Quality Small-Block for Classic Chevrolet Restorations & Upgrades
Built for Durability, Performance, and Hassle-Free Installation
Factory-Tested for Long-Term Reliability & Smooth Operation
Ideal for Hot Rods, Street Builds, and Vintage Chevrolet Applications
ORDER NOW & POWER YOUR BUILD WITH RELIABLE CHEVROLET PERFORMANCE!
Brand: Chevrolet Performance
Manufacturer’s Part Number: 12677823
Part Type: Crate Engines
Summit Racing Part Number: NAL-12677823
Startup & Installation Checklist
- Replace timing components, water pump and plugs before initial startup where applicable.
- Refill all fluids with manufacturer-specified oil and coolant.
- Verify sensors, ECU pinouts and grounds against your chassis or hull wiring.
- Startup warranty covers heads, block and internal lubricated components for 30 days from delivery.
Full terms: 30-day startup warranty · returns
