Click on image to zoom

BP3550CTC1S -BluePrint Partial Dressed SBC 355CID 385HP Long Block Crate Engine 1pc Rear Seal

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Discontinued
Shipping: FREE 48 State Shipping


BluePrint GM engines give you brute, honest horsepower that'll leave others in your rear view mirror. Produced from hand-picked, seasoned four-bolt main blocks and precision built to exacting specifications.

Power: 385 HP @ 5500 RPM, 405 ft. lbs. of torque @ 4100 RPM
Displacement: 355 CID
Bore x Stroke: 4.030” x 3.48”
Compression Ratio: 9.5:1
Recommended Fuel: 91 Octane
Block: Cast Iron, 1 piece rear seal, 4-bolt main caps with passenger side oil dip stick hole, brass freeze plugs.
Crankshaft: Cast Steel, polished, stress relieved and shot peened with chamfered oil oils
Connecting Rods: Heavy Beam with 150,000 psi bolts
Pistons: Hypereutectic
Camshaft: Steel Flat Tappet
Cam Lift: .480” Intake / .486” exhaust
Cam Duration @ .050”: 224 deg. Intake / 230 deg. Exhaust
Lobe Separation: 112 Degree
Cylinder Heads: Cast Iron Vortec.
Combustion Chamber: 64cc
Valves: 2.02” Intake/ 1.60” Exhaust
Rocker Arms: Stamped Steel, 1.5:1 Ratio
Valve Springs: 1.25” Diameter
Balance: Internal
Ignition Timing: Base 10 degrees BTDC, 32 degrees total

Engine Includes:
• Fully assembled long block
• Stamped Steel Chrome Valve Covers
• Melling High Volume Oil pump, pick-up and oil pan
• Aluminum Dual Plane Performance Intake
• Edelbrock Performer 600CFM Carb with electric choke
• HEI Distributor
• Front timing cover with 8” timing pointer
• Oil Filter Adapter
• Dyno Test Sheet

BluePrint limited 30 month / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

Related Items:
14” 168T Flexplate Kit
Base Long Block Version of BP3550CTC1S
Engine Break In Oil

Application List



  • BP3550CTC1S
  • BP3550CTC1S
  • Blue Print
  • Discontinued
  • New


Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • W5.0000” x H5.0000” x L5.0000”
  • FREE 48 State Shipping

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.

May We Suggest

  • We don’t just want your business today. We want to EARN your business for LIFE!
  • USA Owned, Operated & Employed
  • Installers & Resellers Click Here to Apply
  • We Specialize In:
    • GM LS Conversions
    • Engine & Trans Combo Kits
    • Unique Ready to Run Engines
  • Have a question?
  • 888-748-4655 Mon-Fri 8AM-6PM EST
  • Click above for 24/7 Live Chat Service.