383" Long Block

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  • Regular price $4,395.00



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.

370hp/440tq or 430hp/450tq (with Edelbrock EPS manifold)

Block: New GM 4 Bolt Mains, 9.025" Deck Height, 1 Piece Seal
Crankshaft: 4340 Forged Steel, Internal/External Balance, 3.800” Stroke
Rods: 5140 Forged Steel I-Beam with 3/8" Bolts, 5.700" Length
Pistons: Custom Hypereutectic, Reverse Dome, 9.8:1 Compression
Rings: Plasma-Moly Top, Low Friction Oil, 5/64” x 5/64” x 3/16”
370hp Camshaft: Hydraulic Roller, .480”/.480” Lift, 212°/222° Duration @ .050”
430hp Camshaft: Hydraulic Roller, .510”/.521” Lift, 231°/236° Duration @ .050”
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

Torque Converter: 2,000-2,200rpm Stall w/ 370hp Cam, 2,400-2,600 Stall w/ 430hp Cam Required

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 210-338-8585.