Roush BD347IRPC 347 CI EFI Ready Performance Crate Engine

Description

Experience complete front serpentine convenience through the Roush BD347IRPC Crate Engine. Displacing 5.7 liters across 347 cubic inches, this fuel injected small block Ford creates 450 horsepower at 6000 RPM and 420 lb-ft torque at 4500 RPM. Complete front serpentine accessories, air conditioning, and individual runner injection furnish turnkey pro touring luxury combined with road course acceleration.

A premium cast iron Dart four bolt main block features reinforced main webs and extra deck thickness across 4.030 inch bores and a 3.400 inch stroke. Internal rotating hardware includes a 4340 forged steel crankshaft, forged 4340 H-beam connecting rods, and forged aluminum pistons yielding a 10.0:1 compression ratio. CNC ported aluminum cylinder heads set fully dressed dry weight at 495 lbs.

Key Features of Roush BD347IRPC

Buy Roush BD347IRPC crate engine packages to modernize classic Cobra replicas and restomod Mustangs with turnkey eight stack electronic injection and complete front drive accessories. The package includes air conditioning compressor, alternator, power steering pump, and individual runner intake.

• Complete front serpentine pulley package runs alternator, power steering pump, and air conditioning.
• Eight individual runner billet throttle bodies with polished velocity stacks provide instant cylinder response.
• Standalone electronic fuel injection computer meters fuel with precision across changing weather conditions.
• CNC ported aluminum cylinder heads maximize airflow speed across massive intake and exhaust valves.
• Dart cast iron four bolt main block provides extreme bottom end rigidity under high RPM track loads.
• Forged 4340 steel crankshaft produces 420 lb-ft torque to launch lightweight roadsters hard off corners.
• Roush BD347IRPC valvetrain components feature full roller rocker arms to eliminate stud deflection.

Turnkey Eight Stack Dyno Output Calibration

Testing on water brake engine dynamometers validates 450 brake horsepower at 6000 RPM and 420 lb-ft torque at 4500 RPM across an aggressive 2500 to 6400 RPM operating band. Cam duration measures 228 degrees intake and 236 degrees exhaust at 0.050 inch lift, producing 0.550 inch intake and 0.550 inch exhaust lift. The engine draws 13 in-Hg vacuum at 900 RPM on 93 octane fuel, maintaining 50 to 65 PSI hot oil pressure.

Turnkey Front Drive Chassis Alignment

Small block Ford exterior dimensions fit directly into Factory Five, Superformance, and classic Mustang engine bays without chassis alterations. The internal neutral balance crankshaft couples to Tremec manual transmissions using standard bellhousings. Compact front drive brackets maintain radiator clearance, while the front sump oil pan clears roadster suspension crossmembers.

Turnkey Racing Engine Maintenance Thresholds

Pre prime the engine oiling channels with high zinc break in oil using an oil pump drive tool prior to startup. This competition crate engine is not engineered for marine bilge setups, forced induction boost exceeding six PSI on stock ring end gaps, or unmetered nitrous oxide systems.

• Drain break in oil and replace the spin on lube filter after the first 500 operating miles.
• Perform regular motor oil changes every 3000 miles or six months with high zinc synthetic oil.
• Inspect serpentine drive belt alignment and individual throttle linkage synchronization every 6000 street miles.

Turnkey Roush 347IR Shipped Manifest

Protection includes a 2-Year / 24,000-Mile factory limited warranty guarding against defective components. The shipment crate contains the fully dressed engine, eight stack IR intake, serpentine accessory system, air conditioning compressor, alternator, power steering pump, ECU harness, and certified dynamometer run sheet.