LS3 416 HO Long Block

  • Sale
  • $ 10,495.00

Type: LS3 6.8L
Displacement: 416 Cubic Inches
Compression Ratio: 11.2:1
Bore x Stroke: 4.070 x 4.000
Rev Limit: 7000 RPM
Crank: Callies Forged
Rods: Callies H-Beam
Pistons: Mahle Motorsports
Cam: Mast Custom 3-Bolt Core Cam
Intake: LS3 Car Intake
Valve Springs: Mast Beehive

*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 LS3 416 HO’s heart and soul is the new 4.065 aluminum block.  The LS3 designation has a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports LS3 cam core.  The 416 foundation is a honed and decked LS3 aluminum block with a 4.000” forged Callies rotating assembly with Mahle pistons that is topped off with Mast CNC LS3/L92 heads.  ARP fasteners are used throughout and Mast pushrods ride on LS7 hydraulic roller lifters.  The LS3 416 HO is the first release of a diverse line of Mast Motorsports hand built LS3 based long blocks that are designed for the Hot Rod/Muscle Car market.  The LS3 416 HO peaks at the 550+ horsepower mark and is competitively priced for such a powerful complete long block.