Forged Crank, H-Beam Rods, Forged Aluminum Pistons LS 402CID 550HP Long Block Performance Engine


Power: 550 HP & 550 ft. lbs. of torque
Displacement: 6.6L 402 CID
Bore x Stroke: 4.005” x 4.000”
Compression Ratio: 11.2:1
Recommended Fuel: 93 Octane
Block: New honed and decked LS2 aluminum block
Crankshaft: Callies Forged
Connecting Rods: Callies H-Beam
Pistons: Mahle Forged Flat Top
Camshaft: Steel Hydraulic Roller 3-Bolt Custom Grind
Cylinder Heads: Made in USA Custom Cast & CNC Performance Aluminum, LS3 Rectangular Intake Port
Combustion Chamber: 69cc
Valves: 2.165” Intake/ 1.600” Exhaust
Rocker Arms: 1.7:1 LS3
Valve Springs: Upgraded Beehive Spring
Balance Front: Internal
Balance Rear: Internal
Ignition: 58X Reluctor, 24X available by request

Engine Does Not Include:

Oil Pan, oil pump pickup or dipstick & tube
Lifter Valley Cover Plate
Valve Covers
Harmonic Balancer

Warranty: Limited 30 Day warranty.

Handbuilt LS engines feature the best components and are assembled by professional machinist. All handbuilt engines feature ARP Main Studs, ARP Head Bolts and a balanced and blueprinted block.

The 550 Performance Street Long Block’s heart and soul is the new 4.005 aluminum block. It has an engineered camshaft that is custom ground on a billet cam core. The 402 foundation is a honed and decked LS2 aluminum block with a 4.000” forged Callies rotating assembly with Mahle pistons that is topped off with Black Label L93 heads. ARP fasteners are used throughout and pushrods ride on LS7 hydraulic roller lifters. The 550 Performance Street Long Block is the first release of a diverse line of hand built LS2 based long blocks that are designed for the Hot Rod/Muscle Car market. The 550 Performance Street Long Block peaks at the 550+ horsepower mark and is competitively priced for such a powerful complete long block.

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Chevy LS 402 550HP Long Block Crate Engine 19116012

Product Information

  • $10,600.00

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