GM 355 "Vortec" Engine Specs (BP3550CT)

BP3550CT_med

385 HP/405 ft/lbs
$3,095.00

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PART NUMBER: BP3550CT
BLOCK:
  • 4-Bolt Main 2-piece rear seal block w/passenger side dipstick (can special order D/S dipstick)
  • 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
ROTATING ASSEMBLY:
  • Premium cast steel crankshaft
  • Hypereutetic pistons
  • Chevy heavy beam rods with 150,000 psi bolts
  • Hastings Moly rings
  • Balanced rotating assembly
  • Melling high volume oil pump
  • Flat tappet hydraulic lifter camshaft
  • Heavy duty double roller timing set
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
A TON OF EXTRAS:
  • Aluminum intake manifold
  • 9.5 to 1 compression
  • New chrome valve covers
  • Brass freeze plugs
  • Dyno tested – and shipped with results
CRITICAL SPECS:
CAM: .480 Int / .486 Exh & 224 Int / 230 Exh duration @ .050 - 112 degree lobe sep.
HORSEPOWER: 385 @ 5500 rpm
TORQUE: 405 @ 4100 rpm
COMP. RATIO: 9.5 to 1  (91 octane fuel required)

IGNITION TIMING: 34 Degrees Total  (at 4000 RPM)
WARRANTY:
 30 month / 50,000 miles
NOTES:

THIS ENGINE WILL NOT WORK FOR APPLICATIONS REQUIRING EGR.

This engine requires a non weighted harmonic balancer, and non weighted flywheel.

BluePrint Engines recommends a 1800- 2200 rpm stall converter.