Best Seller 
ATK Ford 347 Stroker 410 HP HP20M Stage 2 Performance
Breathing through a carbureted intake manifold, the ATK High Performance HP20M Ford 347 Stroker supplies 410 horsepower from a Stage 2 mid-dress layout to simplify custom speed shop installations.
- 410 horsepower upgrades stock Windsor performance drastically
- 5.7L stroked displacement creates massive street torque
- External 28-ounce balance matches high-performance flexplates
- Hydraulic roller cam maintains smooth street idling
Description
A high-flowing intake design and aluminum heads make the ATK Ford 347 Stroker 410 HP HP20M Stage 2 Performance a highly responsive street powerplant. Experience instant throttle response and tire shredding torque during weekend cruise events. This build utilizes a pre-installed carbureted intake manifold to deliver four hundred ten horsepower smoothly.
Engine Architecture & Core Specifications
- Block Material: Cast iron Ford Windsor Small Block, precision machined.
- Cylinder Heads: High-performance aluminum cylinder heads.
- Compression Ratio: Performance compression profile engineered for aluminum heads.
- Bore & Stroke: 4.030 inch bore x 3.400 inch stroke (347 CID / 5.7L).
- Rotating Assembly: Externally balanced 28 oz imbalance with a hydraulic roller camshaft.
Component Breakdown: Mid-Dress Performance Long Block
This partially assembled engine accelerates your powertrain swap project by including major induction hardware pre-installed.
- A matched carbureted intake manifold pairs with the included distributor and harmonic balancer to simplify front drive integration immediately out of the crate.
- Heavy duty aluminum cylinder heads resist thermal fatigue while the pre-installed oil pan and flexplate streamline the bottom end installation securely.
Vehicle Fitment & Compatibility Matrix
Engineered as a comprehensive powertrain solution this mid-dress Windsor engine drops effortlessly into iconic Ford muscle cars. Sourcing one of our heavy-duty Ford crate engines bypasses complex machine shop delays.
- Fits 1965-1973 Ford Mustang models replacing tired small blocks perfectly.
- Fits 1966-1977 Ford Bronco platforms seeking massive low end torque upgrades.
- Fits 1967-1973 Mercury Cougar chassis acting as a direct fit performance replacement.
- Fits classic Ford F-100 pickup trucks looking for aggressive towing and street power.
Fuel & Ignition System Requirements
Proper fuel delivery dictates the final performance output of this carbureted platform.
- A high flow 600-650 CFM carburetor is required to supply the intake manifold while utilizing 91 Octane premium pump gas prevents pre-ignition under load.
- The included distributor mandates a direct twelve volt ignition source bypassing factory resistor wires to guarantee a powerful spark.
Installation, Break-In Oil & Priming Instructions
Professional mechanical preparation separates a successful engine build from a catastrophic premature failure.
- Fill the crankcase with a high zinc break in oil before manually priming the oil system with a dedicated priming tool until pressure is verified.
- Perform a varied RPM heat cycle before changing the oil and driving conservatively for the first 500 miles.
USA Warranty, Emissions & Logistics
Investing in this ATK High Performance crate engine secures peace of mind through comprehensive manufacturer backing.
- Backed by a strict 1-Year manufacturer warranty this engine provides excellent protection against internal manufacturing defects when installed properly.
- Designated strictly for Race Use Only on non-pollution controlled motor vehicles this package ships securely via LTL freight.
ATK High Performance HP20M Ford 347 Stroker 410 HP Stage 2 LB Specs
| Brand | ATK High Performance Engines |
| Part Type | Crate Engines |
| Product Line | ATK High Performance Ford 347 Stroker 410 HP Stage 2 Long Block Crate Engines |
| UPC | 00653517260094 |
| Crate Engine Family | Ford Windsor |
| Actual Engine Displacement | 5.7L/347 |
| Crate Engine Cylinder Head Material | Aluminum |
| Engine Block Material | Cast iron |
| Assembled | Yes |
| Engine Balance | External, 28 oz. imbalance |
| 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 |
| Supercharger Included | No |
| Warranty Information | 1 Year |
Reviews
There are no reviews yet.