Blueprint Engines Pro Series Big Block Chevy 598ci/724HP/680TQ Base Engine
138-PS5980CT1
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Items You Need
Base Engine
Block:
- BluePrint Engines New Block Casting
- Standard Deck Height
- Cast Iron
- 4-Bolt Main
- 1-Piece Rear Main Seal
- 4.600 in. Bore
Rotating Assembly:
- Forged Crankshaft 4.500 in. Stroke
- Forged H-Beam Connecting Rods 6.480 in. Length
- Forged Pistons 4.600 in. Bore
- Compression: 10.5:1
- Double roller timing set
- Internal Balance
Cylinder Heads:
- Blueprint Aluminum with 119 cc Chambers - 138-PS8012
- 358 CC Intake Runner
- 125 cc Exhaust Runner
- 2.300 in. Intake Valve
- 1.880 in. Exhaust Valve
- Exhaust port raised 0.300 in. over OEM casting
Camshaft Specs:
- Hydraulic Roller
- Duration @ .050 in. Lift: 258-degrees Intake / 266-degrees Exhaust
- Lift: .647 in. Intake / .647 in. Exhaust
- Lobe Separation: 112-degrees
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.
Specifications:
What is the ring end gap. is it nitrous friendly
What is the idle rpm of this engine and what is the vacuum at idle?
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.