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Big Block Chevy 496ci Dress Engine 440HP / 560TQ
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Part Number : 555-81044K
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Part Number : 555-81045K
- Big Block Chevy 496ci Dress Engine
- 440HP / 560TQ
- 2-Piece Rear Main Seal
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.
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 Stall Converter: 2000-2400 rpm
Recommended Fuel: 91 Octane
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Block:
- Brand New Blueprint cast iron 2-bolt main block, 2-piece rear main seal
- Passenger side dipstick
- 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'' straightness and roundness
Rotating Assembly: - External balance
- Cast steel crankshaft - 4.25'' stroke
- 6.135'' connecting rods
- Hypereutectic pistons: 8.6:1 Compression
- Hastings moly piston rings
- Melling high volume oil pump
- Heavy duty timing set
Cylinder Heads: - Cast iron cylinder heads
- Small oval port intake runners
- 120cc combustion chamber
Camshaft Specs: - Hydraulic Flat Tappet
- Duration @ .050'' Lift: 230° Intake / 236° Exhaust
- Lift: .552'' Intake / .555'' Exhaust
- 110° lobe separation
Other Features: - New chrome valve covers
- New timing cover
- New oil pan
- Brass freeze plugs
- Intake Manifold (Dress engines only): Dual plane air gap - satin aluminum
- 800cfm Carburetor (Dress engine only)
- HEI distributor (Dress engine only)
Notes: - This engine will not work for applications requiring EGR.
- Recommended Oil For Your BluePrint Crate Engine: 10W30, Non-Synthetic.
- Zinc additive required for flat tappet lifter application.
Your BluePrint engine was dyno tested with the parts and specifications listed below. If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.
- Fuel Delivery Type: 800cfm, Manual choke
- Spark Plug: NGK 2817
- Spark Plug Gap: .045
- Harmonic Balancer: Weighted, 8" diameter
- Flexplate/Flywheel: Weighted
- 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
JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.
