Roush SF347IRPC 347 CI Individual Runner Performance Crate

Description

Restore sustained valvetrain efficiency with the Roush SF347IRPC Crate Engine, engineered for commercial long block repower programs requiring classic small block Ford dimensions with eight stack induction performance. This 347 cid 5.7L stroker V8 produces 450HP at 6,000 RPM. Technicians must route twin fuel delivery lines to balance pressure across both injector rails.

Solid ASTM A48 Class 30 gray iron forms the 4-bolt main engine casting. A forged 4340 chromoly steel crankshaft pairs with heavy beam connecting rods inside this Roush engine core. The 12V starter pulls 165A under standard cold crank testing. Dry weight measures 465 lbs inside dimensions of 27in length by 26in width by 28in height. Sump capacity holds 7.0 quarts.

Key Features of Roush SF347IRPC

Plant millwrights buy Roush SF347IRPC Crate Engine units for severe industrial engine rebuild programs that demand crisp throttle response. The eight stack electronic induction system meters precise air charges directly into each intake runner.

• Individual runner throttle stacks provide instant throttle response without plenum volume delay.
• CNC ported aluminum cylinder heads house 2.02in intake valves to optimize cylinder air fill.
• A custom ground hydraulic roller camshaft provides stable valve actuation across upper RPM bands.
• Forged aluminum pistons endure intense combustion pressure cycles without wrist pin galling.
• The SF347IRPC commercial core maintains 0.0017in connecting rod bearing clearance for dependable oil films.
• A high volume oil pump circulates lubricant through internal galleys to prevent journal wear.
• Multi layer steel head gaskets clamp compression tight across the entire deck surface.

Dynamometer Load Bench Test Limits

Dynamometer runs record 450HP at 6,000 RPM and 420 ft-lbs torque at 4,200 RPM for this SF347IRPC long block engine. Gauge monitors record 52 PSI oil gallery pressure at 2,000 RPM at 190°F operating temperature. Cylinder compression gauges verify 185 PSI across all eight cylinders within 3% balance. Crankshaft journal runout measures 0.0003in TIR across intermediate journals. Exhaust gas temperature probes register 1,260°F during extended dyno testing.

Shop Installation Maintenance Protocol Requirements

Individual runner throttle crossbar mechanisms require 6 lbs return tension for positive closure against engine vibration. Mechanics must avoid this commercial replacement engine for light passenger cars lacking high output electric fuel pump plumbing or unreinforced manual transmission crossmembers.

• Drain break in oil after 500 miles or 20 operating hours then refill with 10W-40 synthetic motor oil.
• Inspect individual throttle linkage butterflies for uniform synchronization before engine startup.
• Check cylinder head fasteners at 75 ft-lbs torque following the initial thermal heat expansion cycle.

Crate Manifest Warranty Protection Coverage

Backed by the Roush build standard, this package features a 2-Year or 24,000-mile limited warranty. The rugged wooden shipping crate holds the complete engine, eight stack EFI induction, wiring harness, distributor, water pump, harmonic balancer, oil pan, plus signed dynamometer test sheets.