This LS Power Adder Short 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.

Specs:
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 300m Forged Steel I-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 Kit includes: Smeding Forged Camshaft, Gaterman Link-Bar Hydraulic Roller Lifters, 4x Billet Timing Set, GM Thrust Plate—Installed

Sealed-Up Kit includes: Melling Oil Pump, Teflon Rear Main Seal Cover, Gen IV Front Timing Cover, LS Valley Cover & Smeding Stroker Oil Pan—Installed

Final assembly & tuning of this partial engine must be completed by an experienced engine assembler/builder. Smeding Performance is not responsible for damaged caused by user installed parts.

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.