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To prevent costly engine failures from the increased internal loads of high-power tuning, Atomic Conrod and pistons Combo offer critical upgrades before catastrophic damage occurs.

For Ford DOHC engines, power levels of 300-350 RWKW (400-460 HP) on Premium 98 fuel—and slightly higher on E85—put engines at high risk, often leading to broken conrods and ring land damage.
With over 500 Barra rebuilds since 2004, Atomic has seen numerous failures firsthand. The Atomic Engine Rebuild Kits provide options from mild upgrades to 1000+ HP setups, using the same quality components as their record-setting engines, making them ideal for enhancing Ford SOHC/DOHC 6-cylinder engines for substantial power increases.

The Phase 2 kit includes all components from the Phase 1 kits, plus:

• Atomic Billet Conrods:
  • Superleggera (698kW rated for 475, 550, and 698 kits)
  • FatRods (998kW rated for 998 kits)
  • Features pressurized oil feed to gudgeon pin bushes for lubrication and piston crown cooling (exclusive to Atomic)
• Pistons:
  • Atomic Hypereutectic and Chrome Steel turbo rings for 475 kits
  • Atomic Forged and Chrome Steel turbo rings for 550 kits
  • Cosworth F1 Series forged pistons, Coated skirts, pressure-fed gudgeon pins, and Chrome Steel turbo rings, for 698 and 998 kits
• Heavy-Duty Gudgeon Pins and .063” wire locks
• ACL Competition Bearings: Conrod and main bearings with 180 or 360-degree thrust bearings
• Main Cap Support Girdle/Windage Tray (in 698 and 998 GT-A kits only)
• Atomic Heavy Duty Timing Chain and Billet Sprocket
• Atomic All-Steel Oil Pump Housing with billet gears and endplate (#306750 oil pump gears only in 475 kits)
• Atomic Race Series Gasket Set: Includes MLS-D Diesel style head gasket and specialty flange sealer for #7 cap
• Atomic 12mm Tool Steel Head Stud Kit with #306675-14 oversize washers (larger 14.3mm Tool Steel in 998 kits)
• Atomic Harmonic Balancer (#306100-T in 698 and 998 kits only)
• Harmonic Balancer Bolt and Locking Billet Washer Kit (#306680 or #306680-HP)
• Atomic Main Cap Girdle (#306251 for 698 and 998 engine kits only)
• Atomic Extreme Duty Silicon Chrome Vanadium Valve Springs (#306800 – #306802 depending on application)
• Installation Instructions
• Torque Specifications List

Before it’s too late and you need a new engine, check out our Engine Rebuild kits. Designed for everything from mild rebuilds to over 1000 HP, Atomic Rebuild kits use the same high-quality components found in our record-setting engines. They’re perfect for upgrading Ford DOHC 6-cylinder engines to handle significant power boosts.