Built using new block and heads, forged crank, rods, and pistons. Includes performance hydraulic roller cam and lifters, upgraded roller rockers, universal oil pan, single plane intake, 850 cfm carb, sensors, coil packs, and wiring harness. Water pump, front accessory drive pulleys, and module to fire the ignition NOT included.

Recommended Stall Converter: 2200+ RPM
Recommended Fuel: 91 Octane

• New block with 1-piece rear main seal
• New Blueprint Cylinder Heads p/n 138-PS8015 with roller rocker arms

Rotating Assembly

• Forged Crankshaft: 4.125" Stroke
• Forged Connecting Rods: 6.125"
• Mahle Forged Pistons
• 11:1 Compression
• Internally Balanced (Balancer Included) Camshaft Specs
• Hydraulic Roller
• Duration at .050' Lift: 247 Intake, 263 Exhaust
• Lift: .624' Intake, .624' Exhaust
• Lobe Separation: 114° Other Features
• Single Plane Aluminum Intake
• Universal oil pan
• Fuel Delivery: 850 cfm Carburetor
• Ignition: GM coil packs and plug wires (ignition box required)
• Spark Plugs: ACDelco 41-985
• Firing Order: 1-8-7-2-6-5-4-3
• 28 Tooth Reluctor

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. 

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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