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2.7 vs 3.5 EcoBoost: Power, Reliability & Which to Mod

How the 2.7 and 3.5 EcoBoost compare on power, towing, reliability, and modability — which engine fits your build and where each one wants upgrades first.

By EcoBoost Parts Team Updated July 22, 2026

The 2.7 and 3.5 EcoBoost are the two turbocharged V6s at the heart of Ford’s modern lineup — the 2.7 in the F-150 and Bronco, the 3.5 in the F-150, Raptor, and Explorer ST. This guide compares them on power, towing, reliability, and how they respond to upgrades, then points you to the right parts.

Power and Torque

The 3.5 EcoBoost makes more power and torque and underpins the Raptor and Ford’s higher tow ratings. The 2.7 is smaller and lighter but still strong for its displacement, with quick spool and strong real-world performance. If maximum output and towing headroom are the priority, the 3.5 leads.

Reliability

Both are well-proven twin-turbo engines. The 2.7’s compacted-graphite-iron block is stout; the 3.5 has years of high-mileage service behind it. On either engine, cooling and clean oil matter, and the direct-injected intake can benefit from a catch can to slow oil misting onto the valves.

Which to Mod First

Both engines respond hard to the same core bolt-ons. Start with a tuner, add an upgraded intercooler to fight heat-soak, upgrade the failure-prone factory charge pipes, and add a catted downpipe. From there, a cold air intake sharpens response. For big power on the 3.5, fuel-system upgrades and bigger turbos unlock the next tier.

Where to Buy

  • New bolt-ons for both engines: Amazon Automotive — browse all categories.
  • Used and OEM parts: eBay Motors, using the buttons above.

Shopping used or OEM? Try eBay Motors

Live listings for the parts covered in this guide — prices set by the seller.

3.5 EcoBoost turbos 2.7 EcoBoost intercoolers

Frequently Asked Questions

Is the 2.7 or 3.5 EcoBoost more reliable?
Both are proven twin-turbo V6s. The 2.7 uses a compacted-graphite-iron block and is a stout, efficient engine; the 3.5 makes more power and torque and is the platform under the Raptor and higher tow ratings. Maintenance — clean oil, cooling, and addressing the direct-injection carbon question on the 3.5 — matters more than the displacement choice.
Which EcoBoost tows better?
The 3.5 makes more torque lower in the rev range and generally carries the higher factory tow ratings, so it's the stronger tow engine. The 2.7 tows well for its size but the 3.5 has more headroom when loaded and on grades.
Which EcoBoost responds better to mods?
Both respond strongly to a tune, intercooler, and downpipe. The 3.5 has more displacement and turbo headroom for big-power builds, while the 2.7 is a lighter, efficient platform that still wakes up nicely with bolt-ons and a tune.