Roush DL427SRXDSC 427 CI Street Race X Dual Sump Engine

Description

Master mechanics deploy the trusted Roush DL427SRXDSC Crate Engine for severe commercial long block repower tasks demanding continuous road race endurance. This 427 cid 7.0L small block Ford V8 produces 560HP at 6,200 RPM. Technicians must check front subframe crossmember depth because the road race dual sump oil pan requires specific chassis clearance.

Premium cast iron forms the aftermarket 4-bolt main block with nodular iron main caps. A forged 4340 steel crankshaft pairs with forged connecting rods inside this Roush engine core. The 12V starter draws 175A under cranking load. Dry weight totals 490 lbs with dimensions measuring 28in length by 25in width by 27in height. Dual sump capacity holds 8.0 quarts.

Key Features of Roush DL427SRXDSC

Fleet supervisors buy Roush DL427SRXDSC Crate Engine assemblies to conquer demanding industrial engine rebuild programs. Internal baffle trap doors prevent oil starvation during violent lateral vehicle movements.

• High flow CNC ported aluminum cylinder heads deliver maximum air velocity into wide cylinder bores.
• A mechanical roller camshaft delivers aggressive valve lift profiles to sustain high RPM power.
• A dual sump road race oil pan features multi directional trap doors to keep the pickup submerged.
• Forged aluminum pistons endure high cylinder pressures without developing ring groove fatigue.
• The DL427SRXDSC commercial core holds rod bearing oil clearances within 0.0018in tolerances.
• Roller rocker arms feature precision needle bearings that eliminate friction across high lift cycles.
• Multi layer steel head gaskets seal high cylinder pressure against the block deck.

Dynamometer Load Bench Test Limits

Dyno validation charts indicate 560HP at 6,200 RPM and 540 ft-lbs torque at 4,500 RPM on this DL427SRXDSC long block engine. Pressure transducers indicate 58 PSI oil gallery pressure at 2,500 RPM with oil sump temperature held at 195°F. Compression testing demonstrates 190 PSI per cylinder with variance under 3%. Crankshaft dial indicators verify 0.0002in TIR total runout. Exhaust manifolds record steady 1,290°F temperatures during full load testing.

Shop Installation Maintenance Protocol Requirements

Throttle linkage setups demand 5 lbs return spring pull force to ensure positive valve return. Mechanics should not install this heavy duty replacement engine into chassis lacking remote oil filter plumbing or cooling packages capable of shedding high track heat loads.

• Replace initial break in crankcase oil after 500 miles using high zinc 15W-50 racing oil.
• Inspect mechanical roller lifter lash at 0.016in cold clearance every 50 track operating hours.
• Torque cylinder head bolts to 80 ft-lbs in proper sequence following initial heat cycles.

Crate Manifest Warranty Protection Coverage

The Roush build standard delivers a 2-Year or 24,000-mile warranty for total operational peace of mind. Crate shipments contain the assembled engine, four barrel intake manifold, dual sump road race pan, distributor, water pump, harmonic balancer, plus factory dynamometer inspection printouts.