LS Camshafts – NOW IN STOCK!

383" Short Block – Smeding Performance

383" Short Block


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, 13.5cc Dish, Coated Skirts
Rings: Plasma-Moly Top, Low Friction Oil, 5/64" x 5/64" x 3/16"
Compression Ratio: 10.0:1 w/ 64cc Heads, 9.3:1 w/ 72cc Heads
Warranty: 3 Year, Unlimited Miles

Camshaft Kit includes: camshaft, hydraulic roller lifters, roller timing set, thrust plate, lifter dog bones & spring tray--Installed

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

Sealed-Up Kit includes: oil pump, welded pump pick-up, hardened driveshaft, black timing cover & black oil pan--Installed

Torque Converter: 1,800-2,000rpm Stall w/ 380hp Cam, 2,200-2,400 Stall w/ 420hp Cam, & 2,400-2,600 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.

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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