2.0L turbocharged DOHC I-4 (Chevrolet HHR SS)

260 hp/260 lb.-ft.

+ Highest specific output in GM history

- Aging architecture

= Does tuner crowd care?

2.8L turbocharged DOHC V-6 (Saab 9-3)

255 hp/258 lb.-ft.

+ Smooth and torquey

- Missing about 30 hp

= Swedish nirvana

3.6L DOHC V-6 (Cadillac CTS)

304 hp/273 lb.-ft.

+ Heroic power rush

- Can be boomy

= Big-league at last

3.9L OHV V-6 (Chevrolet Impala)

233 hp/240 lb.-ft.

+ VVT a nice trick

- Tubercular

= C’mon, GM, drop the axe

6.0L OHV V-8 Hybrid (GMC Yukon Hybrid)

332 hp/367 lb.-ft.

+ No more girly hybrids

- Sales volume won’t even be a blip

= Engineering tour de force

6.0L OHV V-8 (Pontiac G8)

361 hp/385 lb.-ft.

+ How can ya not like a small-block?

- Quiet as a V-6

= No bark, weak bite

6.2L OHV V-8 (Chevrolet Corvette)

436 hp/428 lb.-ft.

+ Is that hp number for real?

- Trouble stacking up to young guns

= Scalding