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Eagle vs Non-Eagle 5.7 Hemi: What Changed in 2009

Eagle vs pre-Eagle 5.7 Hemi: variable cam timing, revised heads and power ratings compared, which is better, swapping an Eagle in, and replacement engines.

“Eagle” is the name enthusiasts use for the redesigned 5.7 Hemi that arrived for 2009, and “pre-Eagle” or “non-Eagle” means the earlier 2003-2008 engine. The biggest change was variable cam timing, along with revised cylinder heads and other updates, which raised output in the Ram 1500 from 345 hp through 2008 to 390 hp from 2009. The two are related but not interchangeable part for part, so a replacement engine must match your vehicle’s year and setup.

Eagle vs pre-Eagle 5.7 Hemi at a glance

Pre-Eagle (2003-2008) Eagle (2009 on)
Variable cam timing No Yes
Ram 1500 rating 345 hp 390 hp (2009-2012), 395 hp later
Cylinder deactivation (MDS) On many versions from 2005 On many versions
Swapping Simpler, fewer electronic controls Needs the matching calibration and wiring for cam timing

What changed with the Eagle

  • Variable cam timing, controlled by oil pressure and a solenoid, improving power and efficiency across the rev range.
  • Revised cylinder heads for better breathing.
  • Engine management updated to run the cam timing system.

For how cam timing works and what goes wrong with it, see VVT solenoids and cam phaser symptoms.

Identifying your engine

Model year is the quickest guide: 2009 and later 5.7 Hemis are the Eagle design. The VIN’s engine code confirms the exact engine, and an engine with a cam timing solenoid at the front of the engine is the later design. Parts catalogs list many components separately for the two, so give the year when ordering parts.

Which is better?

The Eagle makes more power and is generally preferred for swaps and builds that want the later engine’s output. The pre-Eagle is simpler to wire and run in older vehicles and swaps because it does not need cam timing control. Both share the Hemi’s known valvetrain weak point, lifter and camshaft wear; see 5.7 Hemi tick.

Can you put an Eagle in an older truck?

It can be done, but it is not a simple bolt-in: the engine needs a computer and wiring that control variable cam timing, and accessory and sensor differences may need attention. For a direct replacement, match the engine year to your vehicle.

Which replacement engine do you need?

The eighth character of your VIN identifies the engine. Send it to us with your year, make and model and we will confirm the right engine before you order.

Our 2005-2009 listings span the change, so the VIN check matters most for 2009 vehicles. See MDS vs non-MDS Hemi, 5.7 Hemi specs and 4.7 vs 5.7 Hemi.

Shipping is a flat $80.00 per order to US addresses, with 15-day free returns. Questions? Ask a parts specialist.

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