Overview:

The Blueprint Engines 350ci crate engine combines classic muscle with modern performance, dyno-tested at 390 Horsepower / 410 FT. LBS. Torque and features a genuine Holley Sniper 2 EFI system. Housed in a one-piece rear main seal BluePrint Engines High Strength Cast Iron 4-bolt main Block with a 4.000″ bore and 3.480"stroke, it features high-quality internals like a .495 Intake / .502 Exhaust Lift and 220 Intake / 224 Exhaust Duration @ .050-114° LSA, hypereutectic pistons, cast crank, forged 5.700" Connecting Rods, and Blueprint’s aluminum heads sporting 64cc chambers and raised ports.

The Sniper 2 EFI breathes through the satin dual-plane intake, offering crisp throttle response, self‑tuning via next generation ECU, and compatibility with modern fuels. It eliminates cold-start woes and rough idling, transforming the driving experience into one of modern efficiency on a vintage platform. Finished with a complete dress‑up kit—timing cover, valve covers, HEI distributor, and more, it’s a turnkey powerhouse that blends effortless drivability with classic muscle aesthetics.

Description: 

• Horsepower & Torque: 390 Horsepower / 410 ft. lbs. Torque
• Compression Ratio: 9.2:1
• BluePrint Engines Aluminum Heads
• BluePrint Engines Hydraulic Roller Cam
• BluePrint Engines Cast Crankshaft
  
• BluePrint Engines Hypereutectic Pistons

Block:

• BluePrint Engines High Strength Cast Iron Block
• Manufactured and Machined in the USA!
• 4-Bolt Main
• 4.000" Bore
• 1-Piece Rear Main Seal
• Mech Fuel Pump Provision: Yes
• Passenger Side Dipstick
• Drilled and Tapped for Clutch Linkage

Rotating Assembly:

• Cast Crankshaft
  
• 3.480" Stroke
• Forged 5.700" Connecting Rods
• Hypereutectic Pistons
• Internally Balanced Front - Externally Balanced Rear 

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads - H8002K
• 64cc Chamber
• 2.02" Intake / 1.60" Exhaust Valves
• 195cc Intake / 75cc Exhaust Runners

Cam Specs:

• Cam Type: Roller
• .495 Intake / .502 Exhaust Lift
• 220 Intake / 224 Exhaust Duration
• @ .050-114 Degree Lobe Separation

Ignition Timing:

• 32 Degrees Total at 3500 RPM

Also Includes:

• Holley Sniper II EFI - BPP550-510-3XX
• Thermostat and Thermostat Housing
• Dual Plane Satin Aluminum Intake - BPP350VINT
• BluePrint Logo'd Valve Covers - BPP9518
• Fuel Pump Block Off Plate - BPP42463
• BluePrint Dipstick - BPP9420
• HEI Distributor - BPP350RBK
• Spark Plugs - BPP7938
• Rear Sump Oil Pan
• Harmonic Balancer
• Spark Plug Wires
• Timing Cover
• Oil Pump
• Black Front Accessory Drive
  • Alternator
  • Power Steering Pump
  • 7B10 Peanut style A/C Compressor
  • 1-Wire Alternator
    

Notes:

• The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment. Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
• Front Accessory Drive Does not fit Corvette
• The performance aluminum cylinder heads on this engine feature a .500 raised port vs OEM.