Atomic DOHC Barra Billet Camshafts (STD - Stage 5+)

Atomic Performance Camshafts – Ford Barra DOHC | Stage 1–5+ | Proven Power Gains | VCT Compatible

Description:
The factory cam profiles in the Ford Barra DOHC 6-cylinder engine are conservative by design — short in duration and lacking in lift, which restricts breathing and demands high boost to make power. The Atomic Performance Camshaft range (Stage 1 through 5+) is designed to unlock the true potential of your Barra by improving airflow, turbine efficiency, and cylinder filling at every engine cycle.

With over a decade of development behind them, our cams are built for real power. From mild street to full-race, Atomic camshafts have proven to deliver 30–50kW gains at the same boost level after tuning, and over 1100RWKW in extreme builds with Stage 5Plus cams. Whether you’re chasing 350RWKW or 1000+, we have a cam profile to suit your requirements.

✅ Key Features:

✅ Suits all Ford Barra DOHC 4.0L 6-cylinder engines (BA–FGX)
✅ Stage 1 to Stage 5+ profiles available for street, strip, and race
✅ Designed to enhance breathing and reduce required boost
✅ “Duo Phased” inlet lobes introduce swirl for better cylinder fill & efficiency
✅ Inverted flank asymmetrical lobes – rapid valve lift without excessive lift height
✅ Slightly reduced base circle for improved lifter preload control
✅ Compatible with VCT and standalone ECUs (VCT-delete optional)
✅ Developed and tested in-house since 2006 — proven track record
✅ Used in builds producing 570–1133RWKW

🛠️ Why Choose Atomic Cams?

✔️ Harness residual exhaust gas energy to spool turbos more efficiently
✔️ Increase cylinder filling efficiency with better valve timing events
✔️ Maintain idle vacuum with minimal lope (Stage 3 & 4); aggressive idle (4Plus & 5Plus)
✔️ Gain more power at lower boost – up to 50kW at the same boost after tuning
✔️ Designed to retain valvetrain stability at high RPM
✔️ Pair perfectly with Atomic HD valve springs, retainers & lifters

📦 What’s Included:

• 1x Inlet Camshaft

• 1x Exhaust Camshaft

• Installation Instructions

🔧 Installation Overview:

• Remove turbo ducting and rocker cover

• Align timing marks, remove VCT units, mark and remove cams

• Compare camshaft trigger positions and journal diameters

• Check lifter preload, roller follower wear, and spring tension

• Fit cams with engine oil, reset tensioner, confirm timing mark alignment

• Rotate engine to verify timing

• Start engine and idle at 1000–1400 RPM for 10 minutes

• Ford lifters may take up to 45 minutes to fully bleed

🛠️ Torque Specs & Guidance:

• Ensure all bolts torqued to OEM specs

• Tuning for CAMS required after installation for best results

• Camshafts do not require a run-in period

⚠️ Important Notes:

• Engine tuning required after installation to maximise performance

• Camshaft vacuum change may trigger a fault code prior to tuning — this is normal

• Ford hydraulic lifters may require extended bleeding time after first start

• All lifter preload must be manually checked during installation

• If in doubt — contact our tech support. We’re here to help.