Cadillac ATS 2L Turbo LTG promises performance

Cadillac ATS 2L Turbo LTG -- 2013 Ecotec 2.0L I-4 VVT DI Turbo

Cadillac ATS 2L Turbo LTG — 2013 Ecotec 2.0L I-4 VVT DI Turbo

Cadillac ATS 2L Turbo LTG Four Cylinder mid-line engine specs for the Cadillac ATS:

Engine type Dual Overhead Camshaft
Bore and stroke, in.(cm.) 3.386 x 3.386 (8.60 x 8.60)
Horsepower 272@5500 rpm
Kilowatts(kW) 202.91@5500 rpm
Torque (lb.-ft.) 260@1700-5500 rpm
Newton – Meters (N-m) 351.00@1700-5500 rpm

Here is the engine dyno graph:

Cadillac ATS 2L Turbo LTG

Cadillac ATS 2L Turbo (LTG)

Much like the N20 Turbo Four in the BMW 328i, the ATS’ 2L Turbo LTG will run out of breath at 5500 rpm.  The BMW pulls a peak of around 222 whp at 5500 rpm, according to an Automobile dyno test.  The 328’s N20 is under-rated by BMW as a 240 hp engine.

So although the Cadillac 2L Turbo is SAE rated at 272 hp and the BMW engine at 240 hp, the BMW is likely putting out around the same power as the Cadillac engine.

Cadillac ATS 2L Turbo LTG

Cadillac ATS 2L Turbo (LTG) [click to zoom, back to return]

Cadillac suggests the ATS 2L turbo will hit 0-60 mph in 5.7 sec for the auto, or 5.8 sec for the manual RWD ATS.  For turbo engines, automatics are often quicker than manuals because it is easier for the turbo to stay on spool through the auto shift.

Cadillac ATS 2L Turbo LTG -- 2013 Ecotec 2.0L I-4 VVT DI Turbo

Cadillac ATS 2L Turbo LTG — 2013 Ecotec 2.0L I-4 VVT DI Turbo

GM has shown with earlier 2L Turbos (in the Kappa cars) that they are easily tunable for more boost and reliable power.  The GM Stage 1 power kit for the LNF Turbo engines raised output from 260 hp (194 kW) and 260 lb.-ft. (352 Nm) to 290 hp (216 kW) and up to a robust 340 lb.-ft. (461 Nm) manual trans, or 325 lb.-ft auto.  The kit had no effect on warranty, was dealer installed, and was 50 state legal.  Hopefully GM will offer a similar boost for the new LTG engines.

The 2012 Buick Regal GS uses an LHU engine, for 270 hp and 295 lb. ft of torque:

Applications: Horsepower: hp ( kw )
Buick Regal CXL 220 hp (164kW) @ 5300 RPM SAE CERTIFIED
Buick Regal GS 270 hp (201kW) @ 5300 RPM SAE CERTIFIED
Applications: Torque: lb-ft. ( Nm )
Buick Regal CXL 260 lb-ft (353Nm) @ 2000 RPM SAE CERTIFIED
Buick Regal GS 295 lb-ft (400Nm) @ 2400 RPM SAE CERTIFIED

The newer Cadillac LTG engine is tuned to provide torque at a lower 1500 RPM and a bit higher 5500 rpm on the top end, at the cost of less peak torque at 260 for the Cadillac vs 295 for the Buick.

I predict that there will be some very nice gains from tuning these engines.

Final Cadillac ATS power figures?

The Cadillac Dealer Order Guide is online and although the ATS info still seems pretty preliminary, it shows the initial figures for the Cadillac ATS power trains:

LCV Engine, 2.5L I4, DI, DOHC, VVT (202 hp [150.6 kW] @ 6300 rpm, 190.3 lb-ft of torque [258 N-m] @ 4400 rpm)
LTG Engine, 2.0L Turbo, I4, DI, DOHC, VVT (272 hp [202.8 kW] @ 5500 rpm, 260 lb-ft of torque [353 N-m] @ 1700-5500 rpm)
LFX Engine, 3.6L V6, DI, DOHC, VVT (321 hp [239.4 kW] @ 6800 rpm, 274.4 lb-ft of torque [372 N-m] @ 4800 rpm)
  • 2.5L Four cylinder LCV: The new standard equipment ATS will get the new 202 hp inline 2.5L four cylinder.  It wasn’t that long ago that the 4.9L OHV Cadillac V8 was rated at 200 hp, and that Cadillac weighed more than the ATS will.  The 2.5L ATS should have plenty of power.
  • 2L Turbo Four LTG: The LTG 2L turbo was spec’d at 270 hp but has settled up to 272 hp.  This is likely to be the surprisingly balanced choice for an overall package, and offer a lot of room for upgrades and modifications.
  • 3.6L Six LFX: The Cadillac ATS LFX 3.6L variant gets a Camaro-like 321 hp.  This is a good selection, as it could have been the 304 hp flex-fuel variant or the 318 hp version from the CTS.  Out of the box this will be the ‘hot’ choice for the ATS.

The planned wheels are 17″ and 18″ wheels which are ideal for weight and performance.  This also highlights the choice of tires:

Tires, P225/40ZR18 all-season, blackwall
Tires, P225/40R18 front and P255/35R18 rear, 90W blackwall RF4

The 17″ wheels will have 225/40 tires, and the 18″ will sport staggered 225/40 and 255/35 tires.

Some packages will include steering wheel-mounted Magnesium paddle shifters for the automatic, so no matter which transmission  you choose there will be complete control over gear selection.