Blueprint Engines are a great choice for drivable and reliable high-performance engines. All rotating assemblies are balanced within 2 grams on a computerized balancer. Blueprint Engines are dyno tested and include dyno sheets. 
Best of all they feature a 30 month/50,000 mile warranty.

Recommended Torque Converter Stall Speed: 1800-2200 rpm
Recommended Fuel: 87 Octane

Block:

• NEW BluePrint Cast Iron Block
• 4-bolt main
• 1-Piece Rear Main Seal
• Square and Parallel Decked
• Align Honed Main Bearing Bore
• Cylinders are Sonic Tested for Thickness
• Cylinders Honed on a Computer-Controlled Machine to within .0002 in. Straightness and Roundness

Rotating Assembly:

• Chevy Cast Steel Crankshaft - 3.480 in. Stroke
• OEM Style Chevy 5.700 in. Connecting Rods
• Hypereutectic Pistons
• 9.1:1 Compression Ratio
• Internal Front, External Rear Balanced (Late 350 Weighted Flexplate Recommended, Not Included)

Cylinder Heads:

• GM Vortec Cast Iron with 64cc chamber
• Hardened retainers and valve springs installed
• 1.94 Intake valves
• 1.50 Exhaust valves

Camshaft Specs:

• Hydraulic Roller Tappet
• Duration @ .050 in. Lift: 220 Intake / 224 Exhaust
• Lift: .495 in. Intake / .502 in. Exhaust
• Lobe Separation: 114-degrees
• The camshaft is degreed to ensure maximum horsepower

Timing Specifications:

• Initial Timing: 10-16 degrees
• Total Timing: 32-34 degrees
• Firing Order: 1-8-4-3-6-5-7-2
• Spark Plugs: Champion 13 with a .045 in. Gap Recommended (Not Included)

Other Features:

• New chrome valve covers
• New chrome timing cover
• New oil pan
• Brass freeze plugs

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.