Epic Barn Find: 1961 Corvette, Parked Since 1968

Custom 2013 Shelby GT500 Hits The Block For Charity

Polestar Volvo S60 To Challenge The BMW M3: Report
2013 Porsche 911 GT3 Spy Shots

2013 Porsche Boxster S, 2013 Aston DBS Spied, GT-R Crashed On...

2013 VW Beetle Convertible Launching With Three Special Editions
2013 Porsche Boxster S: First Drive

2013 Aston Martin DBS Replacement Spy Shots

Judge Rules That Flashing Of Headlights Is Free Speech

APS twin turbo kit pumps Pontiac G8 to 557hp

Nelson Ireson

Editor BIO

Nelson is an Editor at High Gear Media focusing on reviewing cars and covering the hottest topics in luxury and performance cars, car culture, and... More

LATEST ARTICLE
2013 Porsche 911 GT3 Spy Shots
Porsche's latest generation of the 911, the 991, has just recently made its way onto the scene... Read More

#3LEADERBOARD RANK
5432ARTICLES CONTRIBUTED
205COMMENTS POSTED

2 8,413 views May 13, 2008

Follow Nelson

Add to circle

pontiac g8 motorauthority 001

APS twin turbo kit pumps Pontiac G8 to 557hp

Enlarge Photo

The performance bargain that is the Pontiac G8 is very nearly unparalleled in the American market. Eschewing the 'if it ain't broke, don't fix it' maxim for one more adulation-worthy the tuners at APS have seen fit to improve on an already good thing, increasing the output of the Pontiac G8's V8 engine to a Cadillac CTS-V rivaling 557hp.

While the Pontiac is not a match for the Cadillac's smart looks or fine-tuned interior, it is still handsome in its own right, and a great value for money. Toss in APS's inter-cooled twin turbo kit and you have a real screamer that can probably run with GM's top sedan for somewhere around half the price.

With power at 557hp, a rise of 196hp over the stock 6.0L V8's 361hp, it's hard to argue with the results. Torque is equally massive, at 583lb-ft, and is available across a wide portion of the rev range as is the way of the turbo. The Cadillac gets its power from a supercharged 6.2L LSA V8, itself a detuned variant of the 650hp LS9 in the Corvette ZR-1, while Pontiac's own G8 GXP gets 402hp from its naturally-aspirated 6.2L LS3 V8.

The G8's Australian roots show through in the kit, which was actually developed on an Australian-spec vehicle (pictured). The system is engineered to be a simple bolt-on procedure, delivering the massive torque and horsepower gains with a minimum of mechanical fuss.

GM Confirms G8 GXP and Ute

Cadillac CTS-V laps the Nurburgring in 7m 59s

Pontiac G8

2009 Cadillac CTS-V

HI-RES GALLERY: pontiac g8 motorauthority 001