Roush SF347IRGTPC 347 CI IR GT Performance Crate Engine

Description

Satisfy demanding GT road-course requirements with the Roush SF347IRGTPC GT Performance Crate Engine in your track machine. Producing 450 horsepower at 6,000 RPM from 347 cubic inches, this small block Ford platform combines polished GT individual runner intake horns with race-spec valvetrain stability for show-stopping track performance.

Solid cast iron engineering creates the four-bolt main cylinder block foundation, housing 4.030-inch bores and a 3.400-inch stroke. A balanced 4340 forged steel crankshaft connects to 4340 forged H-beam rods and forged 4032 aluminum pistons. Featuring a 10.0:1 compression ratio and a polished road-race oil pan, the long block checks in at 448 lbs dry weight.

Key Features of Roush SF347IRGTPC

Discerning vehicle craftsmen buy Roush SF347IRGTPC crate engine systems to secure supercar output with classic GT40 styling cues. Mirror-polished intake trumpets and billet valve covers provide enduring corrosion resistance.

• Polished GT individual runner throttle bodies maximize airflow and visual distinction
• 4.030-inch iron cylinder bores support high combustion pressures without distortion
• 3.400-inch forged stroke crankshaft endures violent clutch dumps and hard launches
• 5.400-inch forged H-beam rods feature high-strength rod bolt fasteners
• 10.0:1 forged pistons permit safe operation on 93-octane pump gasoline
• Polished cast aluminum valve covers protect dual valve springs and roller rockers
• Polished aluminum front-drive brackets secure cooling and charging equipment
• SF347IRGTPC engine management maps throttle response without flat spots across all gears

Track Calibrated Dynamic Dyno Metrics

Operating across an RPM band of 2,200 to 6,400 RPM, this pushrod engine produces 450 brake horsepower at 6,000 RPM and 420 lb-ft torque at 4,200 RPM. A hydraulic roller camshaft features 224 degrees intake and 232 degrees exhaust duration at 0.050-inch lift, alongside 0.544-inch valve lift. Utilizing 93-octane fuel, it pulls 14 in-Hg manifold vacuum while keeping 45 to 65 PSI oil pressure.

Transmission Flange Engine Envelope Clearances

The standard Ford small block six-bolt bellhousing pattern mates with manual top loaders, Tremec TKX manuals, and transaxles. Internal neutral balance requires zero-imbalance flywheels and harmonic balancers. The low-profile oil pan clears GT replica chassis bulkheads and transverse crossmembers.

Pre-Lube Setup Prohibited Use Cases

Pressurize the internal lubrication circuit using a mechanical oil primer shaft and high-zinc petroleum fluid prior to initial startup. This engine is not built for marine wet exhaust environments, forced induction exceeding 8 PSI boost, or pure methanol fuel mixtures.

• Drain break-in petroleum fluid after the first 50 miles of run time
• Replace engine oil every 3,000 miles using specialized high-zinc formulas
• Check valvetrain lash and rocker bolt torque every 12 months

Factory Protection Terms Crate Contents

Roush provides a 24-Month or 24,000-Mile factory limited warranty covering defective internal parts. Included inside each crate is the dressed long block, polished GT throttle system, ECU, harness, polished valve covers, billet distributor, plug wires, balanced damper, and a certified dyno output sheet.