Horsepower: 550 hp
Torque: 550 tq
Idle Quality: Smooth Noticeable Lope
Type: LS2 6.6L
Displacement: 402 Cubic Inches
Compression Ratio: 11.2:1
Bore x Stroke: 4.005 x 4.000
Rev Limit: 7000 RPM
Crank: Callies Forged
Rods: Callies H-Beam
Pistons: CP Bullet
Cam: Mast Custom 3-Bolt Core Cam
Heads: Mast Custom Cast LS3 Heads
Intake: LS3 Car Intake
Valve Springs: PAC Racing Dual Springs
*All hp numbers will be within 2% of the advertised number.
Mast Motorsports 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 Engine has a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports billet cam core. The 402 foundation is a honed and decked LS2 aluminum block with a 4.000” forged Callies rotating assembly with CP pistons that is topped off with Mast Custom Cast heads and an LS3 intake manifold. ARP fasteners are used throughout and Mast pushrods ride on LS7 hydraulic roller lifters. The 550 Performance Street Engine is the first release of a diverse line of Mast Motorsports hand built Turnkey Crate Engines that are designed for the Hot Rod/Muscle Car market. The 550 Performance Street Engine peaks at the 550+ horsepower mark and is competitively priced for such a powerful complete fuel injected turnkey crate engine.
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