Our affordable LS327/327 Deluxe crate engine has the same 327-cubic-inch displacement of the high-revving Small-Blocks from the 1960s, offering you a great, value-minded retro-fit crate engine for a vintage Chevy or street rod — with 327 horsepower.
It’s based on production 5.3L engines found in GM trucks and SUVs, but Chevrolet Performance engineers gave it a hotter cam, Grafel-coated high-silicon pistons, and more. An iron engine block reinforces the engine’s strength and keeps down the cost.
And as one of our Deluxe crate engines, it comes with almost everything you need to get it running, including a high-flow, spider-type intake manifold, ignition coils, coil brackets, and more. Add our Holley carburetor (P/N 1917009) to finish it off!
NOTE: Deluxe engine is shipped as a long-block assembly. Intake manifold, coils, plug wires, and water pump are included, but not installed.
LS-Series Small-Block V-8
Displacement (cu. in.):
Bore x Stroke (in.):
3.780 x 3.620 (96 x 92 mm)
Block (P/N 12551360):
Cast-iron with six-bolt, cross-bolted iron main caps
Crankshaft (P/N 12553480):
Connecting Rods (P/N 12568734):
Powdered metal steel
Pistons (P/N 12571545):
Camshaft Type (P/N 12561721):
Camshaft Lift (in.):
.467 intake / .479 exhaust
Camshaft Duration (@.050 in.):
196° intake / 201° exhaust
Cylinder Heads (P/N 12559865):
Aluminum; cathedral port
Valve Size (in.):
1.890 intake / 1.550 exhaust
Rocker Arms (P/N 10214664):
Investment-cast, roller trunnion
Rocker Arm Ratio:
Maximum Recommended rpm:
Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.
* The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.
***The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Includes destination freight charge and gas guzzler tax.
Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.
To allow you to do an accurate price comparison with prices featured on other Internet sites, GM provides Internet pricing both with and without the Destination Freight Charge (see prices including Destination Freight Charge below). To get full pricing details, go to our Build Your Own section.