Roush DL347RFSP 347 CI 450 HP Carbureted Race Performance Engine

Description

Demand attention in the pits and respect on the strip with the Roush DL347RFSP 347 CI Race Performance engine. Built upon an ultra-rigid 4-bolt main Dart Iron Eagle block, this front-sump 5.7L stroker features hand-polished aluminum cylinder heads, a mirror-finish single-plane intake, and custom engraved valve covers. Delivering 450 HP through a solid roller valvetrain, this engine delivers violent quarter-mile acceleration while serving as the visual centerpiece of your early Ford build.

Key Features of Roush DL347RFSP Race Performance

• Mirror-Polished Race Dress-Up: Features a hand-polished aluminum single-plane intake and engraved valve covers for unmatched show appeal.
• Front-Sump Oil Pan: Engineered perfectly to clear the factory steering linkage on classic 1960s Ford chassis.
• 450 HP Dyno-Proven Output: Fully hot-tested before leaving the factory to guarantee massive horsepower and instant throttle response.
• Dart 8.2-Deck 4-Bolt Block: Eliminates factory casting weaknesses with reinforced cylinder walls and 4-bolt steel main caps.
• Solid Roller Valvetrain: Delivers extreme valve lift to maximize airflow duration without risking valvetrain failure at 6500 RPM.
• CNC-Machined Aluminum Heads: Breathes deeply through optimized intake runners while shedding critical weight off the front axle.

Component Breakdown: Polished Front-Sump Race Block

This fully dressed small block gives you a complete 347 cubic inch foundation with premium polished race parts.

• The heavy-duty Dart block is packed with forged internals and a high-lift solid roller camshaft
• Ships fully assembled with CNC heads polished aluminum valve covers a single-plane intake and a front-sump pan

Vehicle Fitment & Compatibility Matrix

This 347 stroker drops into vintage engine bays using standard 289/302 motor mounts. Bolting a polished front-sump race engine into your chassis ensures you win best-in-show while dominating the track.

• Fits classic 1965-1973 Ford Mustang restomods requiring a show-quality polished race engine with proper pan clearance
• Fits vintage Ford Fairlane and Torino street-strip machines seeking a dyno-verified 450 HP powerplant
• Fits custom Factory Five Cobra replicas demanding authentic 347 displacement with mirror-polished race components
• Fits classic Ford F-100 truck pro-street builds modified for high-performance track events

Fuel & Ignition System Requirements

This polished engine comes ready to run with its own pre-installed induction and ignition parts.

• Install a dedicated high-volume electric fuel pump delivering 6 to 7 PSI of steady pressure to the carburetor
• Connect the included billet distributor to an ignition control box and run heavy-duty spark plug wires

Installation, Break-In Oil & Priming Instructions

Protect your expensive polished assembly during its first critical minutes of operation.

• Force clean engine oil through the block using an SBF priming tool until pressure shows on an analog gauge
• Run conventional high-zinc 10W-30 break-in oil for the first 500 miles before switching to standard racing oil

USA Warranty, Emissions & Logistics

This dressed engine is packaged with extreme care to prevent scratching the polished surfaces during transit.

• Backed by Roush Performance dedicated racing support and strict manufacturing standards straight from the factory
• Built strictly for pre-emissions classic vehicles custom race cars or closed-course track use