Recommended Stall Converter: 2000-2400 rpm
Recommended Fuel: 91 Octane

Block:

•  4-Bolt Mains
• 1-Piece Rear Main Seal
• Passenger Side Dipstick
• 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:
• New 3.75' Stroke Cast Steel Crankshaft
• 5.70' Heavy Beam Connecting Rods with 150,000 psi Bolts
• 10.0:1 Compression Ratio
• Hypereutectic Pistons
• Hastings Moly Piston Rings
• Melling High Volume Oil Pump
• Hydraulic Roller Camshaft
• Heavy Duty Timing Set
  
  Cylinder Heads:
• Blueprint Aluminum Cylinder Heads (p/n 138-H8002K)
• 195cc Intake Runner Volume
• 75cc Exhaust Runner Volume
• 2.02" Swirl Polished Intake Valves
• 1.60" Swirl Polished Exhaust Valves
• Hardened Retainers and 1.437" Diameter Dual Valve Springs
• Straight Spark Plug Configuration
  
  Camshaft Specs:
• Hydraulic Roller
• Lift: .528' Intake / .536' Exhaust
• Duration @ .050' Lift: 221° Intake / 226° Exhaust
• Lobe Separation: 110°
  
  Other Features:
• Chrome valve covers
• Chrome timing cover
• New 5-quart oil pan
• Brass freeze plugs
  
  
• Note: This engine will not work for applications requiring EGR. Does not include flywheel/flexplate.
  Your BluePrint engine was dyno tested with the parts and specifications listed below. A bronze distributor gear is NOT recommended on this engine. If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.
  
  
• Recommended Carburetor Size: 750 cfm
• Spark Plug: NGK R5672A-9
• Spark Plug Gap: .032"
• Harmonic Balancer: 400 ci weighted, 8" diameter
• Flexplate/Flywheel: Late 350 Weighted
• Stall Converter: 2000-2400 rpm
• Intake Manifold: Dual plane
• Fuel Recommendation: 91 Octane
• Timing (Initial/Total Advance): Initial timing - 10-16° and Total timing 32-34°
• Firing Order: 1-8-4-3-6-5-7-2 

Engine Break-In Procedure

Use or break-in oil or conventional (non-synthetic) multi-viscosity oil with zinc additive for the first 500 miles of operation. Avoid hard acceleration for sustained periods. Periodically change the engine speed while driving to help seat the rings. While the engine is running, be sure to check oil pressure and coolant temperature, and check for fluid leaks, such as oil, transmission fluid, fuel, and coolant/antifreeze. Also listen for any unusual sounds. Should you hear an unusual sound, shut the engine off, check for the source, and correct it.

Engines with flat tappet cams only - Start the engine and bring it to 2,000 RPM. Get the engine running smoothly. Then vary the engine speed from 1,800-2,200 RPM in a slow acceleration/deceleration cycle for 30 minutes. This is necessary to provide adequate oil splash and lifter rotation to properly mate each lifter to its lobe. 

At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil. After 6,000 miles, synthetic oils can be used in your engine.  For flat tappet cam engines, continued use of oil with zinc or a zinc additive for the life of your engine is recommended.