Roush DL511IRFEC 511 IR FE 8.4L EFI Aluminum Crate Engine

Description

Featuring a 511-cubic-inch displacement block, the Roush DL511IRFEC Aluminum EFI Crate Engine brings classic FE Ford heritage into modern pro-touring machines. This 8.4-liter big block utilizes electronic eight-stack individual runner fuel injection to produce 650 horsepower at 6,000 RPM. Precision air horns combine historic aesthetic cues with contemporary engine management precision.

A lightweight 356-T6 cast aluminum FE block features cross-bolted steel main caps, reducing overall weight by 120 lbs compared to iron castings. The rotating group pairs a 4.250-inch stroke forged steel crankshaft with 4340 forged H-beam rods and forged 4032 pistons. Cylinder bore measures 4.375 inches with a 10.5:1 compression ratio, backed by an eight-quart baffled oil pan and a dry weight of 525 lbs.

Key Features of Roush DL511IRFEC

High-end Cobra replica builders buy Roush DL511IRFEC crate engine inventory to install authentic big block displacement without excessive front axle weight penalties. Independent throttle horns maximize air velocity for immediate throttle response.

• 356-T6 aluminum engine block casting eliminates excess weight over front chassis crossmembers
• 4.375-inch cylinder bores provide cavernous volume for deep combustion cycles
• 4.250-inch stroke forged crankshaft converts displacement into instantaneous street torque
• 6.490-inch forged H-beam rods resist severe dynamic rod stretch under load
• 10.5:1 compression pistons produce high cylinder pressures on 93-octane pump gasoline
• Eight-stack electronic fuel injection provides precise throttle metering at every runner
• CNC machined aluminum cylinder heads feature large intake valves for high flow rates
• DL511IRFEC electronic harness links engine sensors straight to modern instrument clusters

Combustion Curve Dyno Verification Parameters

Running between 2,200 and 6,200 RPM, this FE V8 generates 650 brake horsepower at 6,000 RPM and 620 lb-ft torque at 4,200 RPM. A hydraulic roller camshaft operates with 242 degrees intake and 248 degrees exhaust duration at 0.050-inch lift, paired with 0.600-inch valve lift. Utilizing 93-octane fuel, it draws 13 in-Hg manifold idle vacuum and holds 45 to 65 PSI oil pressure.

Drivetrain Bellhousing Crossmember Clearance Bounds

The classic Ford FE big block bellhousing flange mounts to heavy Toploader, Tremec TKX, and C6 automatic transmission cases. An internal neutral balance design requires a zero-balance flywheel. The custom baffled oil pan drops between chassis crossmembers in CSX Cobra replicas and 1967-1970 Mustang engine bays.

Initial Break-In Operating Restrictions

Pre-lube the engine internal oil passages with an external drill priming tool and high-zinc break-in petroleum fluid before cranking the starter. This unit is not engineered for marine jet boats, boost pressures exceeding 8 PSI on stock ring gaps, or methanol race fuels.

• Drain break-in petroleum fluid after the first 50 miles of run time
• Swap engine oil every 3,000 miles using specialized high-zinc performance formulas
• Check throttle linkage rod balance and valve lash settings every 12 months

Warranty Information Hardware Manifest Crate

Roush covers this engine with a 24-Month or 24,000-Mile factory limited warranty on internal rotating components. Shipment crates contain the dressed aluminum long block, eight-stack EFI system, ECU, wiring harness, distributor, plug wires, and authenticated dynamometer paperwork.