Buy ATK High Performance GM 350 390 HP Stage Online
Experience blistering street performance and unmatched reliability with the ATK Chevy 350 crate engine. Engineered to deliver a potent 390 HP, this powerhouse transforms your classic ride into a modern muscle machine. ATK High Performance GM 350 390 HP Stage Order today from Electrical Marine Solutions and feel the difference on the first turn of the key!
Upgrade your vehicle’s heart with the ATK High Performance GM 350 390 HP Stage engine. ATK High Performance GM 350 390 HP Stage Whether you are replacing a tired factory unit or building a custom street rod, this ATK Chevy 350 offers the perfect balance of torque, horsepower, and longevity.
While many enthusiasts look for a 6.2 LS3 crate engine or a 6.2 LS engine for modern swaps, the classic ATK Chevy 350 crate engine remains the king of versatility and ease of installation. Built using a hand-picked ATK 350 short block, each engine undergoes rigorous quality checks to ensure it meets high-performance standards.
This engine solves the common headache of “piecing together” a build. Instead of hunting for compatible parts, you get a professionally machined and assembled ATK 350 power plant ready to drop in. It provides that iconic small-block growl while delivering the consistent 390 HP performance you need for the strip or the street.
Overview
- Brand: ATK High Performance Engines
- Manufacturer’s Part Number: HP89CPOL
- Part Type: Crate Engines
- Product Line: ATK High Performance GM 350 390 HP Stage 3 Long Block Crate Engines
- Summit Racing Part Number: HPE-HP89CPOL
- Crate Engine Family: Chevy Small Block
- Actual Engine Displacement: 5.7L/350
- 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: Yes
- 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: No
- Flywheel Included: No
- Air Cleaner Included: Yes
- Spark Plugs Included: Yes
- Spark Plug Wires Included: Yes
- Computer Included: No
- Wiring Harness Included: No
- Water Pump Style: Long
- Supercharger Included: No
- Remanufactured: Yes
- Quantity: Sold individually.
- Notes: Features polished valve covers, PCV valve, breather, and air cleaner assembly with washable/reusable filter.
- Special Attention: Rear sump 5 qt. oil pan is not intended to fit Chevelles with steering behind crossmember, some Corvettes and 62-67 Chevy II applications.
ATK High Performance GM 350 390 HP Stage 3 Long Block Crate Engines
Awesome performance and awesome looks collide with ATK High Performance GM 350 390 hp Stage 3 long block crate engines. They are topped with trick looking parts and have the power to back them up. Each engine is hand-assembled and balanced to help them put out 390 hp and 420 ft.-lbs. of torque that will tear up the street or strip. Whether you are looking to pack some more power in your street rod, muscle car, or truck, ATK has you covered!
ATK GM 350 390 hp Stage 3 long block crate engines include:
- Handpicked, remanufactured block
- ATK High Performance aluminum cylinder heads with 2.020 in. /1.600 ex. valves
- Intake manifold
- Carburetion
- OE crankshaft and connecting rods
- Hypereutectic pistons
- Hydraulic roller camshaft
- Cam lift- .528 int./.536 exh.
- Cam duration at 0.50- 220 int./224 exh.
- 10.0:1 compression
- Distributor, plug wires, and plugs
- Valve covers
- Timing cover and timing set
- Oil pan, pump, and pickup tube
- Water pump
- Front damper and flexplate
Applications
- Make: CHEVROLET
- Beginning Year: 1996
- Ending Year: 2000
- Engine Type: V8
- Engine Size: 5.7L/350
Product Specifications
- Displacement: 350 Cubic Inches (5.7L)
- Horsepower: 390 HP
- Torque: 410 ft-lbs
- Compression Ratio: 9.5:1 (Pump Gas Friendly)
- Block Material: Cast Iron 4-Bolt Main
- Cylinder Heads: Aluminum 64cc/165cc runners
- Camshaft: Hydraulic Roller (.495 Intake / .502 Exhaust Lift)
- Crankshaft: Nodular Iron
Benefits / Why Choose This Product
Choosing the ATK High Performance GM 350 means choosing peace of mind. Unlike a standard 6.0 LS engine swap, which may require extensive wiring and ECU tuning, the ATK 350 offers a “plug-and-play” experience for classic GM enthusiasts.
- Durability: Every engine is built to withstand high-stress environments.
- Value: Get performance that rivals a 6.2 engine or LS3 6.2 crate engine at a fraction of the total swap cost.
- Ready to Run: Skip the machine shop delays and get back on the road faster.
FAQs Section
Does this engine come with a warranty?
Yes, all ATK engines purchased through Electrical Marine Solutions come with a limited 24-month/unlimited-mile warranty.
Can I run this on standard pump gas?
Absolutely. The 9.5:1 compression ratio is specifically designed for 91-octane pump gas.
How long does shipping take?
Due to high demand, lead times vary. Most units ship within 7-10 business days. Secure yours now to lock in your delivery slot.
Conversion Elements
HIGH DEMAND: We are currently seeing a surge in orders for the ATK Chevy 350. Stock is limited—secure your performance build today!
Quality Guaranteed: Every engine is hand-assembled in the USA and inspected for perfection.
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