Roush BD347RPC 347 CI V8 Performance Crate Engine

Description

During open track day lap sessions, the Roush BD347RPC Performance Crate Engine demonstrates exceptional valvetrain precision and cooling stability. Displacing 5.7 liters across 347 cubic inches, this carbureted small block Ford outputs 450 horsepower at 6000 RPM and 420 lb-ft torque at 4500 RPM. Complete front serpentine drive pulleys, air conditioning, and power steering provide turn key luxury.

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 BD347RPC

Buy Roush BD347RPC crate engine packages to modernize classic Cobra replicas and restomod Mustangs with turnkey carbureted horsepower and complete front drive accessories. The package includes air conditioning compressor, alternator, power steering pump, and single plane intake.

• Complete front serpentine pulley package runs alternator, power steering pump, and air conditioning.
• 800 CFM four barrel mechanical secondary carburetor meters high air volume for unrestricted top end power.
• Single plane open plenum aluminum intake manifold supplies unrestricted air volume to cylinders above 3500 RPM.
• 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 the line.
• CNC ported aluminum cylinder heads drop front axle weight while maximizing air flow speed.
• Roush BD347RPC valvetrain components feature full roller rocker arms to eliminate stud deflection.

Turnkey Carbureted 347 Dyno 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.

Front Runner Subframe Drivetrain Fitment

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 Performance Engine Service Regimen

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 verify carburetor float adjustments every 6000 street miles.

Turnkey Roush 347RPC 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, four barrel carburetor, single plane intake, serpentine accessory system, air conditioning compressor, alternator, power steering pump, and certified dynamometer run sheet.