LS Cylinder Heads IN STOCK!

406" 2x4 Custom 550hp/560tq – Smeding Performance

406" 2x4 Custom 550hp/560tq


This engine is a demonstration of the different levels of customization we offer. If you would like to order one similar, please call 210-446-0960. 

Block: Dart SHP 4 Bolt Mains, 9.025" Deck Height, 1 Piece Seal, 4.125" Bore
Crankshaft: Smeding 4340 Forged Steel, Internal/External Balance, 3.800” Stroke
Rods: Smeding 5140 Forged Steel I-Beam with 3/8" Bolts, 5.700" Length
Pistons: JE Forged Aluminum, Reverse Dome, 10.0:1 Compression
Rings: Plasma-Moly Top, Low Friction Oil, 1/16" x 1/16" x 3/16"
Camshaft: Smeding Hydraulic Roller, .544”/.543” Lift, 236°/244° Duration @ .050”
Rocker Arms: Smeding 1.5 Ratio, 3/8" Stud, Full-Roller
Intake: Edelbrock Tunnel Ram 2x4 Intake Manifold
Cylinder Heads: Smeding Aluminum, 195cc Intake Port, 2.02"/1.60" Valves, 65cc Chambers
Warranty: 3 Year, Unlimited Miles

This engine is already optioned with the following components:

  • MSD Pro-Billet Low Profile Distributor
  • Holley 650cfm Mechanical Secondary 2x4 Carbs
  • Holley 2x4 Sideways 4150 Linkage Kit
  • Polished 2x4 Sideways Fuel Lines

close check Thank you for signing up!