BP3830CTC1S Small Block Crate Engine by BluePrint Engines 383 CI 405 HP GM Style Dressed Longblock with Carburetor Iron Heads Flat Tappet Cam

HP & Torque: 405 HP / 440 FT LBS
Compression Ratio: 9.5:1
Cast Iron Heads
Flat Tappet Cam
Cast Steel Crank
Hypereutectic Pistons

BLOCK:
Hand picked seasoned block
Square and parallel decked
Align honed main bearing bore
Cylinders honed on computer controlled machine to within .0002 straightness and roundness
Cylinders are sonic tested for thickness
4-Bolt Main
4.000" Bored .040" Over
1-Piece Rear Main Seal
Mech fuel pump provision: Yes
Passenger Side Dipstick Drilled and tapped for clutch linkage

ROTATING ASSEMBLY:
New BluePrint Cast steel crankshaft
3.750" Stroke
OEM type 5.700" connecting rods w/ 150,000 psi bolts
Hypereutectic pistons
External Front/ External Rear

CYLINDER HEADS:
Cast iron Vortec heads
1.25 diameter valve springs
Hardened retainers and springs
2.02 swirl polished intake valves
1.60 swirl polished exhaust valves
1.5 long slot, stamped steel rockers
Hardened push rods

CAM SPECS:
Cam Type: Flat Tappet
.487 Intake .508 Exhaust
234 Intake / 244 Exhaust duration
@ .050 - 112 degree lobe separation

IGNITION TIMING:
34 Degrees Total at 3500 RPM

ALSO INCLUDES:
Aluminum intake manifold
Distributor
750cfm carburetor
New chrome valve covers
Brass freeze plugs
Dyno tested and shipped with results

WARRANTY:
30 month / 50,000 mile