Roush DL511IRFEPC 511 CI IR FE Performance Crate Engine

Description

Severe stop-and-go route cycles mandate the Roush DL511IRFEPC Crate Engine, manufactured for commercial long block repower tasks demanding high continuous torque and deluxe FE packaging. This 511 cid 8.4L big block Ford produces 625HP at 5,800 RPM. Installers must check front crossmember clearance because the high capacity front sump pan requires adequate clearance above chassis linkage.

Solid cast aluminum forms the FE engine block casting featuring cross-bolted main caps and ductile iron dry sleeves. A forged 4340 steel crankshaft reinforces this Roush engine core. Electrical starter motors draw 195A on standard 12V shop circuits. Dry weight measures 530 lbs across dimensions of 30in length by 28in width by 29in height. Pan capacity holds 8.0 quarts.

Key Features of Roush DL511IRFEPC

Fleet mechanics buy Roush DL511IRFEPC Crate Engine units for rapid industrial engine rebuild schedules without sourcing loose induction hardware. Deluxe dress items include polished valve covers and matched front accessory brackets.

• Cast aluminum FE cylinder heads optimize intake air velocity for superior big block power output.
• Hydraulic roller camshaft profiles prevent excessive lobe wear across extended fleet service intervals.
• Individual runner electronic fuel injection meters fuel delivery under changing atmospheric pressure conditions.
• Forged aluminum pistons endure high cylinder pressures without developing ring groove fatigue.
• The DL511IRFEPC commercial core maintains 0.0020in rod bearing oil clearances under heavy continuous load.
• A heavy duty water pump circulates coolant through internal passages to eliminate cylinder hot spots.
• Multi layer steel head gaskets eliminate combustion blow by across block deck surfaces.

Dynamometer Load Bench Test Limits

Dynamometer testing confirms 625HP at 5,800 RPM plus 650 ft-lbs torque at 4,200 RPM for this DL511IRFEPC long block engine. Shop instrumentation documents 60 PSI oil gallery pressure at 2,500 RPM at 195°F operating temperature. Cylinder compression gauges verify 195 PSI across all eight cylinders within 3% variance balance. Crankshaft center journal runout shows 0.0003in TIR. Exhaust gas temperature gauges indicate 1,300°F during extended dyno pulls.

Shop Installation Maintenance Protocol Requirements

Throttle crossbar linkages require 6 lbs return spring force for positive closure against vibration. Fleet maintenance shops should not choose this heavy duty replacement engine for vehicles with low pressure carbureted mechanical fuel pump lines.

• Drain break in oil after 500 miles or 20 operating hours then refill with 15W-50 motor oil.
• Inspect hydraulic lifters at zero lash plus one half turn before initial hot engine run cycles.
• Check cylinder head fasteners at 85 ft-lbs torque following the initial thermal heat expansion cycle.

Crate Manifest Warranty Protection Coverage

The Roush build standard includes a 2-Year or 24,000-mile limited manufacturer warranty. The heavy wooden shipping crate holds the dressed engine package, eight stack induction, distributor, water pump, harmonic balancer, oil pan, valve covers, spark plug wires, plus certified dynamometer test sheets.