383" Long Block – Smeding Performance

383" Long Block


Why buy a rebuilt engine or some production line 350" when you can have a BRAND NEW 383" for nearly the same price? And do not think this is some cheapie engine, these are 100% completely new engines built with quality parts like a new 4 bolt main block, forged crankshaft & rods, roller cams & roller valvetrain. These engine are built with the same details Smeding Performance has become known for, QUALITY! Built using all 100% brand new parts, including the block, this engine was designed from the ground up with hot rodding in mind.

Block: Smeding Heavy Duty 4 Bolt Mains, 9.025" Deck Height, 1 Piece Seal, 4.000" 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: UEM Custom Hypereutectic Aluminum, Dish, 9.8:1 Compression, Coated Skirts
Rings: Plasma-Moly Top, Low Friction Oil, 5/64” x 5/64” x 3/16”
Rocker Arms: Smeding 1.5 Ratio, Full-Roller
Cylinder Heads: Smeding Aluminum, 180cc Intake Port, 2.02"/1.60" Valves, 65cc Chambers
Warranty: 3 Year, Unlimited Miles

Cam Specs:
380hp: .480”/.480” Lift, 212°/222° Duration @ .050”, 112 LSA
420hp: .495”/.502” Lift, 220°/224° Duration @ .050”, 112 LSA
450hp: .510”/.521” Lift, 231°/236° Duration @ .050”, 111 LSA

480hp: .544”/.543” Lift, 236°/244° Duration @ .050”, 110 LSA

Torque Converter: 1,600-2,000rpm Stall w/ 380hp Cam, 2,000-2,400rpm Stall w/ 420hp Cam & 2,400-2,800rpm Stall w/ 450hp Cam Recommended

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.

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