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.
✅ 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
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)
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.
✅ 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
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)