The LS3 416's heart and soul is the new 4.060 aluminum block. The 416 designation has a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports billet cam core. The 416 SS' foundation is a honed and decked LS3 aluminum block with a 4.000” forged Callies Compstar crank and Compstar rods. It includes Mahle forged pistons and is topped off with GM LS3 heads and a Chevrolet Performance LS3 carb intake manifold. ARP fasteners are used throughout and Mast pushrods ride on LS7 hydraulic roller lifters. The LS3 416 is just one of a diverse line of Mast Motorsports hand built Turnkey Crate Engines that are designed for the Hot Rod/Muscle Car and Offroad markets. The LS3 416 SS makes 605 horsepower and is competitively priced for such a powerful complete fuel injected turnkey crate engine.
Type: LS3 6.8L
Displacement: 416 Cubic Inches
Compression Ratio: 11:1
Bore x Stroke: 4.065 x 4.000
Rev Limit: 7250 RPM
Crank: Callies Compstar
Rods: Callies H-Beam
Pistons: Mahle Forged
Cam: Mast Custom 3-Bolt Billet Core Cam
Heads: GM LS3 Heads
Intake: Chevy Performance LS3 Carbureted
Valve Springs: Mast Motorsports Dual
*All hp numbers will be within 2% of the advertised number.