Roush SF427SRXCC 427 CI Street Race X Custom Crate Engine

Description

Engineered around a precision-machined Dart 9.5-deck block, the Roush SF427SRXCC 427 CI eliminates core distortion while providing a custom-calibrated tune for specialized chassis. This 7.0L stroker uses an SF-specific low-profile oil pan and a proprietary SRX roller camshaft to output 560 HP. By combining a 4.000-inch forged crank with custom carburetor tuning, this small block delivers violent mid-range acceleration and reliable track manners for your low-slung build.

Key Features of Roush SF427SRXCC 427 CI

• 560 HP Custom Calibration: Delivers instant throttle response and perfectly optimized air-fuel ratios straight out of the crate.
• SF-Specific Low-Profile Pan: Engineered to clear specialized custom tubular subframes and tight steering linkages perfectly.
• Dart Iron Eagle Block: Provides an incredibly rigid cast iron foundation that refuses to flex under severe 560 HP loads.
• Proprietary SRX Roller Camshaft: Grinds out an intensely aggressive exhaust lope while maximizing high-RPM valve lift.
• Forged 4.000-Inch Stroker Crank: Stretches the small block Ford architecture to 427 cubic inches for brutal low-end pulling power.
• CNC-Ported Aluminum Heads: Features race-profiled combustion chambers to detonate pump-gas air charges with extreme efficiency.

Component Breakdown Custom Street Race Configuration

This factory-calibrated small block gives you a bulletproof 427 cubic inch stroker foundation ready for immediate deployment.

• The heavy-duty Dart block houses a fully forged 4340 rotating assembly and an aggressive SRX roller camshaft
• Ships fully assembled with CNC aluminum heads a custom-tuned carburetor a high-flow intake and the SF-spec pan

Vehicle Fitment & Compatibility Matrix

This 427 stroker drops perfectly into vintage Ford engine bays requiring specialized clearance. Bolting a custom-calibrated SF 427 engine into your chassis guarantees unmatched naturally aspirated dominance.

• Fits specialized tube-chassis racing builds demanding a low-profile oil pan and extreme naturally aspirated power
• Fits custom Factory Five Cobra replicas seeking the ultimate high-output naturally aspirated Ford powerplant
• Fits vintage 1965-1973 Ford Mustang pro-touring builds requiring a shallow pan footprint
• Fits classic Ford Fairlane and Torino street machines looking for a dyno-verified 560 HP upgrade

Fuel & Ignition System Requirements

Feeding a 560 HP custom-calibrated engine requires heavy fuel delivery and a steady high-voltage spark.

• Install a high-volume mechanical or electric fuel pump delivering steady pressure to the custom-tuned carburetor
• Connect the included billet distributor to an external ignition box and heavy-duty racing spark plug wires

Installation Break-In Oil & Priming Instructions

Protect the high-lift valvetrain by following strict mechanical startup procedures before turning the key.

• Use an SBF priming tool through the distributor bore to pump oil through the pushrods before hitting the starter
• Fill the low-profile pan with conventional high-zinc 10W-30 break-in oil and run a varied RPM cycle to seat the rings

USA Warranty Emissions & Logistics

This elite custom engine is shipped securely on a heavy freight pallet straight to your door.

• Protected by an official 2-Year or 24000-Mile warranty covering internal manufacturing and assembly defects
• Built specifically for pre-emissions classic vehicles custom hot rods or closed-course competition use