255cc Intake, 95cc Exhaust & 69cc Chambers Virgin A356 Aluminum Castings 6 Bolt Head Casting with Extra Strength Decks Advanced 11° Valve Angle for Maximum Flow & PTV Clearance 2.165” Intake Valve 21-4N Alloy & 1.60” Exhaust Valve 23-8N Super Alloy 0.210" Intake Free Drop & 0.250" Exhaust Free Drop 23-8N Alloy has the same high temp characteristics of “Inconel” w/o the brittleness Available Complete w/ Chromoly Retainers, Ti Retainers, or Bare w/ Valves Billet Rocker Arm Stan...

Max Recommend Spring Pressure 600# Open Max Recommend Engine RPM 8,000 Axle Oiling System for High Spring Pressure Security Short Travel Piston Plunger System Cold Forged Steel Body Heat Treated for Exceptional Wear Resistance Precision Ground Needle Roller Bearings with High Chromium Steel Axle Cold Forged Extra Long Piston, Precision Ground and Fitted High Flow Disc Style Quick Reacting Check Valve for Better Reaction Precision Oil Metering Assuring Proper Oiling to Rocker Arms Proprieta...

Max Recommend Spring Pressure 600# Open Max Recommend Engine RPM 7,800 Axle Oiling System for High Spring Pressure Security Cold Forged Steel Body Heat Treated for Exceptional Wear Resistance Precision Ground Needle Roller Bearings with High Chromium Steel Axle Cold Forged Extra Long Piston, Precision Ground and Fitted High Flow Disc Style Quick Reacting Check Valve for Better Reaction Precision Oil Metering Assuring Proper Oiling to Rocker Arms Proprietary Tie-Bar System

Smeding Performance LS 6.125" Pwr Adr 300m Rods start out as a 300m steel alloy billet, are shot peened to decrease surface stress and heat treated in increase tensile strength. All Smeding Performance LS 6.125" Pwr Adr 300m Rods have a long-life bronze bushing wrist pin and come standard with ARP2000 7/16" fasteners for extreme applications. LS 6.125" Pwr Adr 300m H-Beam:6.125" Length Center-to-Center300m Billet High Tensile Strength AlloyBronze Bushed .927" Wrist Pin2.100" Precision Honed ...

Smeding Performance Crankshafts start out as a 4340 billet steel alloy core, are forged by non-twist machinery, shot peened to decrease surface stress, heat treated in increase tensile strength and finally nitrided to prevent surface wear. All Smeding Performance Crankshafts come with the reluctor wheel already installed for you! LS 4.000" 8-Cwt Crankshaft:4.000" Stroke8 Counterweight DesignGun Drilled Main & Rod JournalsStandard LS Wet Sump Snout4340 Forged High Tensile Strength Alloy1,7...

Max Recommend Spring Pressure 520# Open Max Recommend Engine RPM 8,000 Short Travel Piston Plunger System Cold Forged Steel Body Heat Treated for Exceptional Wear Resistance Precision Ground Needle Roller Bearings with High Chromium Steel Axle Cold Forged Extra Long Piston, Precision Ground and Fitted High Flow Disc Style Quick Reacting Check Valve for Better Reaction Precision Oil Metering Assuring Proper Oiling to Rocker Arms Proprietary Tie-Bar System

Smeding Performance LS 6.125" Pwr Adr 4340 Rods start out as a 4340 steel alloy billet, are shot peened to decrease surface stress and heat treated in increase tensile strength. All Smeding Performance LS 6.125" Pwr Adr 4340 Rods have a long-life bronze bushing wrist pin and come standard with ARP2000 7/16" fasteners for extreme applications. LS 6.125" Pwr Adr 4340 H-Beam:6.125" Length Center-to-Center4340 Forged High Tensile Strength AlloyBronze Bushed .927" Wrist Pin2.100" Precision Honed ...

IN STOCK & READY TO SHIP!!Smeding Performance is now offering Dart LSN SHP engines blocks in a ready to assemble package! This engine block is fully machined with cam bearings, freeze plugs & oil galley plugs installed. Block is machined for 1/2" Head Studs. Cylinders have been deburred & stroker clearanced as well!  Dart PN: 31867212 1/2" Head Stud Threads 4.125" Final Cylinder Bore Diameter CNC Plateau Honed w/ Dual Torque Plates CNC Parallel Surfaced Decks Cylinders Deburred ...

Clears most common chassis Clears 3.622” stroke w/ steel rod Comes with all hardware, pick-up tube, gaskets & baffle sheet.

Cathedral Port R2: .617”/.614” Valve Lift w/ 1.7 Rocker 231/236 Duration @ .050” 112LSA + 4* Advance Cathedral Port R3: .621”/.615” Valve Lift w/ 1.7 Rocker 235/244 Duration @ .050” 114.5LSA + 4.5* Advance

Smeding Performance Crankshafts start out as a 4340 billet steel alloy core, are forged by non-twist machinery, shot peened to decrease surface stress, heat treated in increase tensile strength and finally nitrided to prevent surface wear. All Smeding Performance Crankshafts come with the reluctor wheel already installed for you! LS7 4.000" 8-Cwt Crankshaft:4.000" Stroke8 Counterweight DesignGun Drilled Main & Rod JournalsLS7 Dry Sump Snout4340 Forged High Tensile Strength Alloy1,700hp Ra...

Clears most common chassis Clears 3.622” stroke w/ steel rod Comes with all hardware, pick-up tube, gaskets & baffle sheet.