Roush 511RFE 511 CI Big Block Ford FE Performance Engine
Ditch old small blocks for LS Classic GMLS9012 495HP Tri-Power retro engine packages. An unpainted 376 CID aluminum block uses 10.7:1 compression mimicking classic triple carburetor setups.
- 495 HP runs 5,750 maximum RPM
- All aluminum block reduces nose weight
- Included automatic transmission 14 inch flexplate
Description
Dominate the street and strip with brutal, naturally aspirated displacement using the Roush 511RFE Big Block Ford Performance Engine. This 511 cubic inch monster builds upon a heavy-duty aluminum FE block packed with a forged steel crankshaft and forged rods to easily handle 600 HP and 600 lb-ft of torque. Breathing through high-flow CNC aluminum heads and a classic carbureted intake manifold, this crate engine delivers the authentic, tire-shredding big block Ford experience without the tuning complexity of an 8-stack EFI system.
Key Features of Roush 511RFE Performance Engine
- 600 HP Dyno-Proven Output: Leaves the factory fully hot-tested to guarantee massive horsepower and unstoppable low-end torque.
- Classic Carbureted Induction: Arrives equipped with a high-flow aluminum intake manifold ready to accept a massive 4-barrel racing carburetor.
- Aluminum FE Engine Block: Significantly reduces vehicle weight compared to an original 428 Cobra Jet iron block while drastically increasing block strength.
- Forged Rotating Assembly: Packs the massive block with a forged steel crank and H-beam rods to handle brutal acceleration safely.
- CNC-Ported Aluminum Heads: Maximizes high-velocity airflow port dynamics to feed the massive 511ci cylinders efficiently.
- Hydraulic Roller Camshaft: Grinds out a violently choppy idle and delivers extreme high-RPM lift without flat-tappet wear issues.
Component Breakdown: Carbureted FE Big Block
This massive-displacement FE block gives you a bulletproof foundation for your vintage drag car or custom truck.
- The heavy-duty aluminum FE block is packed with forged internals and a high-lift hydraulic roller camshaft
- Arrives fully dressed with CNC aluminum heads custom valve covers a single-plane intake manifold and an MSD distributor
Vehicle Fitment & Compatibility Matrix
This 511 cubic inch big block requires serious hood clearance and heavy-duty motor mounts. Dropping in a massive 511ci FE powerplant gives you 600 horsepower of naturally aspirated dominance.
- Fits classic Ford F-100 and F-250 truck restomods looking for massive towing torque and classic big block aesthetics
- Fits vintage Ford Galaxie and Thunderbolt drag chassis seeking a dyno-verified 600 HP naturally aspirated powerplant
- Fits classic Ford Mustang pro-street builds modified to accept massive big block FE dimensions
- Fits custom high-performance marine or off-road projects requiring a heavy-duty 8.3L aluminum block engine
Fuel & Ignition System Requirements
Feeding a 511ci performance engine requires a massive fuel delivery setup and a hot spark.
- Bolt on a high-CFM 850+ 4-barrel carburetor and feed it with a high-volume electric fuel pump system
- Connect the included MSD distributor to a high-voltage MSD 6AL ignition box and run heavy-duty spark plug wires
Installation, Break-In Oil & Priming Instructions
Follow these setup rules to keep your new 511ci roller engine healthy for years to come.
- Use a priming tool through the distributor hole to get oil flowing to the roller lifters before turning the crankshaft
- Fill the pan with conventional high-zinc 10W-40 break-in oil and run a varied RPM cycle to seat the forged rings
USA Warranty, Emissions & Logistics
This engine is a heavy-duty crate item shipped securely on a freight pallet directly to your door.
- Backed by Roush Performance strict manufacturing standards to ensure premium quality straight from the factory
- Not emissions-legal on modern street cars built strictly for pre-emissions classics and closed-course drag racing
Roush Industries 511RFE Crate Engine Specs
| Brand | Roush Industries Inc. |
| Engine Model | 511RFE |
| Part Type | Crate Engines |
| Warranty Info | 2 Years / 24,000 Miles Limited Warranty |












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