632" BMF 840hp – Smeding Performance

632" BMF 840hp


This is the most powerful, naturally aspirated, pump gas, hydraulic roller, true street engine we have to offer. Everything about this engine is just epic. The cubic inch, the cylinder heads, the camshaft, everything is turned up to the max, yet this beast still makes peak power under 6,000rpm, has a very street friendly valve train and runs great on pump gas. It truly is a B.M.F'r.
Like all Smeding Performance engines it is backed by our industry leading 3 year/unlimited mile warranty.

Block: Dart Big M Sportsman, 4.600" Bore, 10.2" Deck Height
Crankshaft: Smeding 4340 Forged Steel, Internal Balance, 4.750" Stroke
Rods: Smeding 4340 Forged Steel H-Beam with 7/16" Bolts, 6.700" Length
Pistons: JE Forged Aluminum, Flat Top, 10.5:1 Compression
Rings: Plasma-Moly Top, Low Friction Oil, 1/16" x 1/16" x 3/16"
Camshaft: Smeding Hydraulic Roller, .680”/.680” Lift, 271°/283° Duration @ .050”
Rocker Arms: Scorpion 1.7 Ratio, 7/16" Stud, Full-Roller
Intake: Dart Single Plane 4500 Flange
Cylinder Heads: Smeding 360cc Intake Port, 2.30"/1.88" Valves, 120cc Chambers
Warranty: 3 Year, Unlimited Miles

Torque Converter: 2,600-3,000rpm Stall Recommended

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