LS3 416 HO Carbureted Crate Engine - 550HP

  • Sale
  • $ 14,495.00


The LS3 416 HO'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 HO's 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 cylinder heads and a GMPP LS3 carbureted intake manifold.  ARP fasteners are used throughout and Mast pushrods ride on LS7 hydraulic roller lifters.  This 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 HO makes 550 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: 7000 RPM
Crank: Callies Compstar
Rods: Callies H-Beam
Pistons: Mahle Forged
Cam: Mast Custom 3-Bolt Billet Core Cam
Heads: GM LS3
Intake: GMPP LS3
Valve Springs: Mast Motorsports Dual

*All hp numbers will be within 2% of the advertised number.