Roush DL347SRFSP 347 CI Street Race Fuel Performance Crate Engine

Description

Factory remanufacturing standards establish the Roush DL347SRFSP Crate Engine as the definitive commercial long block repower core for high output small block Ford operations. This 347 cid 5.7L stroker V8 produces 450HP at 6,000 RPM with fuel specific carburetion. Installers must inspect vehicle subframe clearance because the deep sump oil pan requires adequate clearance above steering drag links.

Solid ASTM A48 Class 30 cast 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 motor draws 165A during cold cranking. Dry weight measures 460 lbs across an engine stance of 27in length by 26in width by 28in height. Sump capacity holds 7.0 quarts.

Key Features of Roush DL347SRFSP

Master machinists buy Roush DL347SRFSP Crate Engine assemblies to accelerate power adder industrial engine rebuild projects. The deluxe build includes high flow water pumps and performance pulleys.

• CNC ported aluminum cylinder heads house 2.02in intake valves to maximize cylinder air fill volume.
• A performance hydraulic roller camshaft profile keeps valve open duration stable across peak power bands.
• The four barrel carburetor meters large fuel volume under wide open throttle without computer sensor complications.
• Forged aluminum pistons endure intense combustion pressure cycles without wrist pin galling.
• The DL347SRFSP commercial core maintains rod bearing oil clearances within 0.0017in tolerances.
• Roller rocker arms feature precision needle bearings that eliminate friction across high lift sweeps.
• High volume oil pump pickups provide steady oil delivery under rapid acceleration forces.

Dynamometer Load Bench Test Limits

Dyno validation charts indicate 450HP at 6,000 RPM and 420 ft-lbs torque at 4,200 RPM on this DL347SRFSP long block engine. Pressure transducers indicate 52 PSI oil gallery pressure at 2,000 RPM with oil sump temperature held at 190°F. Compression testing demonstrates 185 PSI per cylinder with variance under 3%. Crankshaft dial indicators verify 0.0003in TIR total runout. Exhaust manifolds record steady 1,260°F temperatures during full load testing.

Shop Installation Maintenance Protocol Requirements

Mechanical throttle return linkage needs 5 lbs return spring force for secure closure against vibration. Fleet technicians should not choose this commercial replacement engine for front wheel drive vehicle chassis or applications requiring electronic fuel injection computers.

• Drain break in crankcase oil after 500 miles or 20 hours then install fresh 10W-40 mineral oil.
• Check carburetor float levels through inspection sight plugs prior to hot operational runs.
• Retorque cylinder head bolts to 75 ft-lbs after the initial thermal heat expansion cycle.

Crate Manifest Warranty Protection Coverage

Supported by the Roush build standard, this product includes a 2-Year or 24,000-mile warranty. The wooden crate holds the dressed engine package, aluminum intake manifold, carburetor, distributor, water pump, harmonic balancer, oil pan, valve covers, plus certified dyno sheets.