In Stock
ATK High Performance Chevy 383 Stroker 470 HP Complete Long Block Crate Engines HP101C
- ISPM 15 heat-treated Euro palletized & weatherproof shrink-wrapped
- Insured European road freight delivery with hydraulic tail-lift service
- Dispatches in 1–2 business days from our UK & European Logistics Centre
- Transit typically 1–3 business days (UK) / 3–6 business days (Continental Europe)
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
This ATK long block, part number HP101C, puts 470 hp into a 6.3-liter, 383-cubic-inch small-block Chevy package, built around a forged rotating assembly, a hydraulic roller cam, and aluminum cylinder heads at a 10.0:1 compression ratio that stays friendly to pump gas.
What comes with it
Carburetor, intake manifold, distributor, oil pan, valve covers, timing cover, a long-style water pump, harmonic balancer, flexplate, spark plugs, and plug wires are all installed on this complete build. A flywheel, air cleaner, computer, and wiring harness are left off, so budget for those if your project needs them.
What to check before you buy
- The induction is carbureted, specified around a 750 CFM carburetor; an aftermarket EFI system is a separate conversion if you want fuel injection instead.
- The flexplate suits automatic-transmission use; a manual-transmission build still needs its own flywheel.
- This combination is happiest on premium fuel, 91 octane or better.
Common questions
Is this a turnkey engine? It is nearly complete; you will still need to add an air cleaner, exhaust, and the remaining cooling components.
Does it carry a warranty? Yes, ATK provides a warranty on this engine; contact ATK for the specific terms.
Will it bolt into a manual-transmission car? Yes, though you will need to add a flywheel since only a flexplate ships with it.
Specifications
| Feature | Details |
|---|---|
| Brand | ATK High Performance Engines |
| Manufacturer’s Part # | HP101C |
| Product Type | Complete Long Block Crate Engine |
| Crate Engine Family | Chevy Small Block |
| Horsepower | 470 HP |
| Torque | Estimated High Torque Output |
| Displacement | 6.3L / 383 CI |
| Compression Ratio | 10.0:1 |
| Block Material | Cast Iron |
| Crankshaft Material | Forged Steel |
| Connecting Rods | Forged Steel |
| Piston Material | Hypereutectic Aluminum |
| Camshaft Type | Hydraulic Roller |
| Cylinder Head Material | Aluminum |
| Cylinder Heads Included? | Yes |
| Intake Manifold Style | Carbureted |
| Carburetor Included? | Yes |
| Throttle Body Included? | No |
| Distributor Included? | Yes |
| Oil Pan Included? | Yes |
| Valve Covers Included? | Yes |
| Timing Cover Included? | Yes |
| Water Pump Included? | Yes (Long Style) |
| Harmonic Balancer Included? | Yes |
| Flexplate Included? | Yes |
| Flywheel Included? | No |
| Air Cleaner Included? | No |
| Spark Plugs Included? | Yes |
| Spark Plug Wires Included? | Yes |
| Computer Included? | No |
| Wiring Harness Included? | No |
| Supercharger Included? | No |
Startup & Installation Checklist
- Inspect all external gaskets, seals, spark plugs and timing components prior to installation.
- Refill engine oil, transmission gear oil and coolant to manufacturer-specified capacities before initial cranking.
- Prime the lubrication system and verify ECU wiring pinouts, sensors, and ground connections.
- Startup warranty covers internal lubricated components, cylinder heads, and engine block for 30 days from delivery.
Full terms: 30-day startup warranty · returns