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...

Block: Dart Big M Sportsman, 4.600" Bore, 10.200" Deck HeightCrankshaft: Smeding 4340 Forged Steel, Internal Balance, 4.700" StrokeRods: Smeding 4340 Forged Steel H-Beam with 7/16" Bolts, 6.700" LengthPistons: Manley 2618 Forged Aluminum, Flat Top, 10.5:1 CompressionRings: 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-RollerCylinder Heads: Smeding 360cc ...

Block: Dart Big M Sportsman, 4.600" Bore, 10.2" Deck HeightCrankshaft: Smeding 4340 Forged Steel, Internal Balance, 4.750" StrokeRods: Smeding 4340 Forged Steel H-Beam with 7/16" Bolts, 6.700" LengthPistons: Manley 2618 Forged Aluminum, 3cc Flat TopRings: Plasma-Moly Top, Low Friction Oil, 1/16" x 1/16" x 3/16"Warranty: 3 Year, Unlimited Miles Camshaft Kit Includes: camshaft, hydraulic roller lifters, roller timing set, & thrust plate - Installed Cam Specs: .680”/.680” Lift, 271°/283° Dur...