Roush DL331SRXEDSC 331 CI EFI Street Race Crate Engine

Description

Factory remanufacturing standards establish the Roush DL331SRXEDSC Street Race Crate Engine as your primary commercial long block repower solution. This 331 CI 8-Cylinder electronic fuel injected crate engine delivers 425HP for high performance street machines. Technicians must check fuel pressure regulator return lines because modern EFI rails require verified 43 PSI fuel pressure to stop lean air fuel mixtures under full throttle.

Solid ASTM Class 35 iron forms the four-bolt main competition block casting. Each Roush engine core incorporates a forged 4340 steel crankshaft and forged 4340 H-beam connecting rods. Valvetrain geometry integrates CNC ported aluminum heads with 21-4N stainless steel valves. The 12V starter draws 180A under full cold cranking load. Net dry weight measures 455 lbs across 29in length, 26in width, 27in height, with 6.0 quarts oil capacity.

Key Features of Roush DL331SRXEDSC

Commercial shops buy Roush DL331SRXEDSC Street Race Crate Engine hardware to execute an industrial engine rebuild with verified shop floor reliability. Precision robotic boring centers each cylinder axis perpendicular to the main bearing centerline for maximum piston ring seal.

• A stroked 331 CI small block displacement platform balances high RPM rev capabilities with street torque.
• Four-bolt steel main bearing caps provide exceptional crankshaft rigidity under continuous high RPM loads.
• Forged aluminum pistons resist scuffing inside close cylinder tolerances under racing temperatures.
• The DL331SRXEDSC commercial core valvetrain features hydraulic roller lifters to maximize airflow flow.
• Line honed camshaft journals ensure low friction rotation and continuous head lubrication.
• Electronic fuel injection throttle bodies optimize air distribution across all engine operating speeds.
• Multi layer steel cylinder head gaskets maintain fire ring seal integrity under full throttle shifts.

Dynamometer Verification Operational Thresholds

Dyno testing validates that each DL331SRXEDSC long block engine yields 425HP and 395 ft-lbs of shaft torque at 6,000 RPM. Technicians maintain 2,800 RPM continuous load while tracking oil gallery pressure between 50 PSI and 70 PSI. Engine oil temperatures hold steady at 195°F with exhaust gas levels peaking at 1,260°F. Bench compression gauges show 185 PSI across all eight cylinders within 3% total variance. Crankshaft journal runout remains under 0.0002in TIR to prevent bearing shell wipeout.

Field Installation Maintenance Protocols

Electronic throttle actuator circuits require diagnostic sweep checks prior to initial road testing. Do not drop this commercial replacement engine into fleet trucks requiring low octane pump gas without timing retard programming. Fleet service teams must apply standard maintenance protocols.

• Change out break-in engine oil and the spin-on filter element after 500 miles or 20 run hours.
• Verify electronic fuel pressure regulator maintains 43 PSI static rail pressure at key on.
• Check cooling system thermostat operation to verify standard coolant flow initiates at 180°F.

Crate Manifest Coverage Terms

Rebuilding procedures follow the certified Roush assembly standard backed by a 2-Year 24,000-mile parts warranty. Inside the timber transport crate rests the assembled long block core, oil pan, front timing cover, aluminum valve covers, EFI intake manifold, water pump, and the certified shop dyno checklist.