engine parts
Edelbrock 46720 Long Block #46720 GM LS3 416, GM LSA Head W/Edelbrock Springs, 1-Piece Rear Main
$19,169.95
Made to order
Universal fit — no vehicle-specific fitment required.
Free freight ≥ $999 · $40 flat below
About this part
Edelbrock part #46720 is the same long-block used on our LS Supercharged crate engine that delivers 720 horsepower and 695 ft-lbs. of torque on 91 octane pump gas. It features an aluminum LS3 block with a forged and balanced Manley crankshaft forged Manley h-Beam connecting rods and Manley forged aluminum pistons to create a 416ci LS3 stroker with 4.065" bore and 4 stroke. Its compact design allows for a seamless swap into most platforms; Rods: Forged H-Beam; Camshaft: 215 Deg /247 Deg .629/.656 121 LSA; Rocker Arms: LS3 1.7 ratio; Cylinder Heads: GM with Edelbrock Valve Springs #5768; Warranty: 2-year / Unlimited mileage; Long Block only. Does not come with an induction system; eliminating the need for modifications to your engine bay or hood. This long-block is a great foundation for starting any high performance forced induction LS based build. Engine Specifications: Finish: Black powder coated; Displacement: 416 c.i.d.; Horsepower: Upwards of 720 HP when used with Edelbrock supercharger; Torque: Upwards of 695 ft/lbs. when used with Edelbrock supercharger; Compression: 9.5:1; Block: LS3 Aluminum; Crankshaft: Forged 4340; Pistons: Forged Aluminum
Specifications
| SHIPPING WIDTH | 24 |
|---|---|
| SHIPPING HEIGHT | 34 |
| SHIPPING LENGTH | 28 |
| SHIPPING WEIGHT | 400 |
| WARRANTY | 24 Months |
| EMISSIONS | Racing or Pre-Emissions Use Only |
| PCDB CATEGORY | Engine |
| COUNTRY OF ORIGIN | US |
| PART TERMINOLOGY | Engine Long Block |
| INSTALLATION INSTRUCTIONS | crate_engine-warranty.pdf |
| ENGINE OIL PUMP INCLUDED | Yes |
| FUEL TYPE | Gas |
| WINDAGE TRAY INCLUDED | Yes |
| GRADE TYPE | Performance |
| MAIN BEARING CAP BOLT QUANTITY | 4 |
| FLYWHEEL INCLUDED | No |
| COMPRESSION RATIO | 9.5:1 |
| FLEXPLATE INCLUDED | No |
| ENGINE DISPLACEMENT | 416 CID |
| CRANKSHAFT MATERIAL | Forged Steel |
| PISTON STYLE | Dish |
| PISTON VALVE RELIEFS | Yes |
| OIL PAN INCLUDED | Yes |
| TIMING COVER INCLUDED | Yes |
| HARMONIC BALANCER INCLUDED | Yes |
| INTAKE MANIFOLD INCLUDED | No |
| CYLINDER HEAD MATERIAL | Aluminum |
| ENGINE WATER PUMP INCLUDED | No |
| AIR CLEANER TYPE | Not Included |
| CALIBRATION | No |
| CAMSHAFT TYPE | 215deg/247deg .629/.656 121 LSA |
| CARBURETOR CHOKE TYPE | N/A |
| CARBURETOR TYPE | Not Included |
| CONSTRUCTION TYPE | Assembled |
| CYLINDER HEAD TYPE | GM LSA With Edelbrock Valve Springs |
| DISTRIBUTOR INCLUDED | No |
| ENGINE BLOCK MATERIAL | Cast Iron |
| HARDWARE INCLUDED | Yes |
| HORSEPOWER | N/A |
| INTAKE MANIFOLD TYPE | Not Included |
| MANIFOLD MATERIAL | N/A |
| OIL FILTER INCLUDED | Yes |
| PISTON TYPE | Forged Aluminum |
| PLUG WIRE AND BOOT INCLUDED | No |
| QUANTITY | Sold Individually |
| REAR MAIN SEAL TYPE | 1-Piece |
| RGL | WARNING: This product can expose you to Chromium Lead and Zinc which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information visit www.P65warnings.ca.gov. |
| ROCKER ARM RATIO | 1.7:1 |
| ROCKER ARM TYPE | LS3 |
| SPARK PLUGS INCLUDED | No |
| THROTTLE BODY INCLUDED | No |
| TORQUE | N/A |
| TYPE | GM LS3 (Long Block Only) |
| UNIVERSAL OR SPECIFIC FIT | Specific Fit |
| VALVE COVER INCLUDED | Yes |
| VALVE COVER MATERIAL | Cast Aluminum |
| VALVE COVER TYPE | OEM Black Powder Coated |
| WATER PUMP INCLUDED | No |
| WIRE HARNESS INCLUDED | No |
Datasheet — not yet published