Overview:

BluePrint BP38321SP GM Small Block Compatible performance short block engine has been dyno tested at our factory with a Holley Classic 750cfm Carburetor and H8002K Cylinder Heads and produced 436 horsepower and 443 minimum torque. Not every BP38321SP is Dyno tested. This performance shows the capabilities of this engine. Performance may vary depending upon what cylinder heads, fuel system and intake manifold you choose. This engine features a 4-inch bore which mathematically yields a 377ci with a 3.75-inch stroke. This customizable engine comes with timing cover, harmonic balances, oil pan, hydraulic roller cam, and a high-volume oil pump. This power adder engine is engineered to handle any type of forced induction. Whether you’re adding nitrous, a supercharger, or turbos, this short block has the strength and reliability to take the boost.

Description:

• Horsepower & Torque: 432 Horsepower / 450 ft. lbs. Torque
• Compression Ratio: 9.5:1
• BluePrint Engines Hydraulic Roller Cam
• BluePrint Engines Forged Pistons
• BluePrint Engines Forged Crank

Block:

• BluePrint Engines High Strength Cast Iron Block
• Cylinders Honed on Computer-Controlled Machine to Within .0002 Straightness and Roundness
• Cylinders are Sonic Tested for Thickness
• Align Honed Main Bearing Bore
• Passenger Side Dipstick 
• 1 Piece Rear Main Seal
• 4 Bolt Main
  
• 4.00" Bore
  

Rotating Assembly:

• New Forged Crankshaft
• 3.75" Stroke
• Forged Pistons, 18cc Dish
• Forged Rods with 150,000 PSI Bolts

Cam Specs w 1.5 Rocker Ratio:

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

Ignition Timing:

• 34 Degrees Total (at 3500 RPM)

Also Includes:

• Heavy Duty Double Roller Timing Set
• High Volume Oil Pump
• Harmonic Balancer
• Timing Cover
• Oil Pan