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427" LS Power Adder Long Block – Smeding Performance

427" LS Power Adder Long Block


This LS Power Adder Long Block comes standard with a DART SHP Iron engine block. This block utilizes a 6 bolt cylinder head pattern for extra clamping force to help secure the cylinder heads and head gaskets. It also has billet steel main caps with splayed outer bolts. This greatly increases the strength of the engine block and tightly secures the crankshaft. Please call for additional options or upgrades.

Block: DART SHP Iron, 6 Bolt Head Pattern, Billet Steel Main Caps, 4.125" Bore
Crankshaft: Smeding 4340 Forged Steel, Internal Balance, 4.000" Stroke, 58x, Std Snout
Rods: Smeding 4340 Forged Steel H-Beam w/ ARP2000 Bolts, 6.125" Length
Pistons: JE 2618 Forged 2618 Aluminum, Coated Skirts & 0.170" Wrist Pins
Rings: Stainless Steel Top, Low Friction Oil, 1.2/1.5/3.0
Camshaft: Comp Cams Billet Steel Hydraulic Roller
Lifters: Gaterman Link-Bar Hydraulic Roller
Timing Set: Single Roller, 4x
Oil Pump: Melling 10295 Std. Volume / High Pressure
Cylinder Heads: Smeding 260cc CNC Ported 11° 6 Bolt LS3 Heads
Head Gaskets: Cometic MLX 5-Layer Head Gaskets
Head Fasteners: 6 Bolt ARP2000 Head Stud Kit
Pushrods: Chromoly 5/16" w/ Heavy Wall Thickness
Rocker Arms: OEM LS3 w/ Upgraded 360* Roller Bearings

Cam Specs:
Blower/Nitrous: .623/.615 Lift, 245/256 Duration @ .050", 113 LSA
Turbo: .623/.615 Lift, 243/248 Duration @ .050", 114 LSA
All of our engine packages are extremely flexible and can be customized! If there is an option you would like and do not see, please call us at 210-446-0960.

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