ATK High Performance GM 350 390 HP Stage 2 Long Block Crate Engines HP89M
Reduce assembly time without sacrificing power with the ATK High Performance HP89M GM 350 390 HP Stage 2 Mid-Dress Long Block. This powerful GM 350 delivers 390 reliable horsepower and arrives partially dressed, simplifying your engine swap. ATK High Performance ensures consistent quality and dyno-proven output. The HP89M GM is the perfect mid-dress option for achieving high-end performance and legendary durability from your classic GM 350 small block.
| Brand | ATK High Performance Engines |
|---|---|
| Part Type | Crate Engines |
| Product Line | ATK High Performance GM 350 390 HP Stage 2 Long Block Crate Engines |
| UPC | 00653517266911 |
| Crate Engine Family | Chevy Small Block |
| Actual Engine Displacement | 5.7L / 350 CI |
| Crate Engine Cylinder Head Material | Aluminum |
| Engine Block Material | Cast iron |
| Advertised Compression Ratio | 10.0:1 |
| Assembled | Yes |
| Engine Balance | Internal/External |
| Cam Style | Hydraulic roller, OE roller |
| Rear Main Seal Style | 1-piece |
| Intake Manifold Included | Yes |
| Intake Manifold Style | Carbureted |
| Cylinder Heads Included | Yes |
| Carburetor Included | No |
| Throttle Body Included | No |
| Distributor Included | Yes |
| Oil Pan Included | Yes |
| Valve Covers Included | Yes |
| Timing Cover Included | Yes |
| Water Pump Included | Yes |
| Harmonic Balancer Included | Yes |
| Flexplate Included | Yes |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| Water Pump Style | Long |
| Supercharger Included | No |
| Warranty Info | 1 Year |
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