This is a BluePrint Engines 400 cubic inch GM small block crate engine, built as a long block, rated at 500 horsepower and 510 lb-ft of torque. It pairs a forged steel crankshaft and forged pistons with BluePrint HP8103 aluminum cylinder heads and a hydraulic roller cam at 10.3:1 compression, supplied without induction or accessories so the buyer can choose a fuel system. Every BluePrint crate engine is dyno tested and ships with a dyno printout.
Specifications:
- Displacement: 400 c.i.
- Horsepower: 500 HP
- Torque: 510 lb-ft
- Bore: 4.125 in
- Stroke: 3.750 in
- Compression ratio: 10.3:1
- Block: High-strength cast iron, 4-bolt main, 1-piece rear main seal, mechanical fuel pump provision, drilled and tapped for clutch linkage, passenger-side dipstick
- Crankshaft: Forged steel, 3.750 in stroke
- Connecting rods: 5.700 in
- Pistons: Forged
- Cylinder heads: BluePrint aluminum HP8103, 64cc chamber, 2.08 in intake / 1.60 in exhaust valves, 220cc intake / 67cc exhaust runners
- Camshaft: Hydraulic roller, .555 in intake / .576 in exhaust lift, 236/242 duration at .050, 110 deg lobe separation
- Configuration: Long block (no induction)
- Balance: Internally balanced front, externally balanced rear
- Fuel: 91+ octane
- Part number: BP4002CT1
What's Included: Long block assembly with BluePrint HP8103 aluminum heads and hydraulic roller cam. Also includes BluePrint valve covers (BPP9518), dipstick (BPP9420), timing cover, oil pump, and oil pan. A harmonic balancer is not part of the included list, and carburetor or EFI, intake, ignition, and front accessories are not included on the long block.
Engine Platform: Built to the GM small block (SBC) platform. BluePrint notes this engine is not for EGR.
Prop 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information visit www.P65Warnings.ca.gov.
FAQ
What is included with the BP4002CT1 long block?
It is a long block: the assembled block, forged rotating assembly, HP8103 aluminum cylinder heads, and hydraulic roller cam, plus valve covers, dipstick, timing cover, oil pump, and oil pan. It does not include a harmonic balancer, intake, carburetor or EFI, distributor, or accessories.
How much power does this 400 make?
It is rated at 500 horsepower and 510 lb-ft of torque, and each engine ships with a dyno printout of its tested results.
What fuel does it require?
BluePrint lists 91 octane or higher for this 10.3:1 compression engine.
Is it internally or externally balanced?
It is internally balanced at the front and externally balanced at the rear, so match the flywheel or flex plate accordingly.
What oil does BluePrint list for this engine?
BluePrint lists 10W-30 oil BPP10W30 among the related products for this 400 c.i. long block.
