Description

Atomic 475 ST Long Motor – Ford Barra DOHC | OEM+ Spec | 600hp Capable | Blueprinted Street Build

Description:
The Atomic 475 ST is our OEM+ long motor for enthusiasts wanting factory reliability with some headroom for up to 600hp. This build is perfect for street-driven Barra-powered Falcons, conversions, or boosted daily drivers who want the confidence of a tough bottom end and properly matched upgrades — without stepping into full race-spec territory.

Blueprint assembled, test-run in-house, and built from trusted Atomic components, the 475 ST gives you peace of mind and plug-and-play performance potential.

Optional Upgrades

  • FULL Steel oil pump
  • Stainless valves + upgraded valve springs
  • Adjustable VCT Delete Vernier cam gears
  • -10AN welded rocker cover breathers
  • High-volume sump or baffled oil pan
  • Choice of camshaft stage (Stage 1–3)

Specifications

✅ Quality Block Prep

  • Ultrasonically tested seasoned Ford 6-cylinder Barra block
    • Selected for good wall thickness and structural integrity

  • Fully machined and blueprint-prepped
    • Torque plate honed bores, decked, cleaned, and painted

✅ Crankshaft & Rotating Assembly

  • OEM crankshaft, inspected, polished, and balanced

  • Hypatec cast pistons
    • Coated skirts for wear reduction and quiet cold-start operation

  • Superleggera rods fitted with ARP 2000 bolts
     

✅ Cylinder Head

  • Fully reconditioned OEM Barra cylinder head
    • Pressure tested, surfaced, and valve seats 

  • OEM valves or optional stainless steel upgrades

  • Polished FG cams with Stage 1 or Stage 2 camshaft  upgrade options

  • Heavy duty valve springs available as an option

✅ Timing & Valvetrain

  • OEM timing gear with upgraded Atomic timing chain and OEM tensioner
    • Optional billet crank sprocket and HD guides

  • Cleaned and bled OEM hydraulic lifters optional Atomic Anti Pump Lifters available

✅ Oil System

  • Refurbished OEM oil pump
    • Optional upgrade to FULL Steel pump housing

  • Sump and pickup reconditioned and resealed

✅ Blueprint Assembly & Testing

  • Built in-house to Atomic blueprint spec
    • Bearing clearances, ring gaps, piston-to-wall, and deck heights precisely measured

  • Test-run in Atomic’s test rig
    • Includes full report on oil pressure, temp, and compression balance

What's Included

  • Fully assembled Atomic 475 ST Long Motor
  • Powder-coated rocker and timing covers (choice of colour)
  • Ford oil filter, 15W/40 run-in oil (14L), NGK plugs
  • Torque specs sheet, run-in instructions, spare gaskets, Atomic merch
  • 12-month conditional street-use warranty

Compatibility

  • Ford BF Falcon

Atomic 475 ST Long Motor – Ford Barra DOHC | OEM+ Spec | 600hp Capable | Blueprinted Street Build

Description:
The Atomic 475 ST is our OEM+ long motor for enthusiasts wanting factory reliability with some headroom for up to 600hp. This build is perfect for street-driven Barra-powered Falcons, conversions, or boosted daily drivers who want the confidence of a tough bottom end and properly matched upgrades — without stepping into full race-spec territory.

Blueprint assembled, test-run in-house, and built from trusted Atomic components, the 475 ST gives you peace of mind and plug-and-play performance potential.

Optional Upgrades

  • FULL Steel oil pump
  • Stainless valves + upgraded valve springs
  • Adjustable VCT Delete Vernier cam gears
  • -10AN welded rocker cover breathers
  • High-volume sump or baffled oil pan
  • Choice of camshaft stage (Stage 1–3)

✅ Quality Block Prep

  • Ultrasonically tested seasoned Ford 6-cylinder Barra block
    • Selected for good wall thickness and structural integrity

  • Fully machined and blueprint-prepped
    • Torque plate honed bores, decked, cleaned, and painted

✅ Crankshaft & Rotating Assembly

  • OEM crankshaft, inspected, polished, and balanced

  • Hypatec cast pistons
    • Coated skirts for wear reduction and quiet cold-start operation

  • Superleggera rods fitted with ARP 2000 bolts
     

✅ Cylinder Head

  • Fully reconditioned OEM Barra cylinder head
    • Pressure tested, surfaced, and valve seats 

  • OEM valves or optional stainless steel upgrades

  • Polished FG cams with Stage 1 or Stage 2 camshaft  upgrade options

  • Heavy duty valve springs available as an option

✅ Timing & Valvetrain

  • OEM timing gear with upgraded Atomic timing chain and OEM tensioner
    • Optional billet crank sprocket and HD guides

  • Cleaned and bled OEM hydraulic lifters optional Atomic Anti Pump Lifters available

✅ Oil System

  • Refurbished OEM oil pump
    • Optional upgrade to FULL Steel pump housing

  • Sump and pickup reconditioned and resealed

✅ Blueprint Assembly & Testing

  • Built in-house to Atomic blueprint spec
    • Bearing clearances, ring gaps, piston-to-wall, and deck heights precisely measured

  • Test-run in Atomic’s test rig
    • Includes full report on oil pressure, temp, and compression balance

  • Fully assembled Atomic 475 ST Long Motor
  • Powder-coated rocker and timing covers (choice of colour)
  • Ford oil filter, 15W/40 run-in oil (14L), NGK plugs
  • Torque specs sheet, run-in instructions, spare gaskets, Atomic merch
  • 12-month conditional street-use warranty
  • Ford BF Falcon

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