manifest destiny
Master
I stated they shared engine, tranny and rear end. Not that they were built identical. Both used the 4L65E tranny. The rear ends were the same as well. How they bolted the parts and pieces together would necessarily be different as they are different cars. I recall many vette owners being a bit ticked about that. Especially since the GTO was $10k+ less than a vette. One definitely looked prettier than the other. From the net...
This is where things get interesting. The first model year of the GTO, 2004, had the 5.7-liter LS1 V8 under the hood. It was pretty much the same engine as the Corvette C5, developing 350 hp and 365 lb-ft of torque. Beginning the 2005, Pontiac replaced the 5.7-liter LS1 V8 with the new 6.0-liter LS2 V8. Neatly, this was the same unit as the C6 Corvette, which came out around the same time.
Surprise #5: Although it'll happily melt its rear BFGoodriches into rubber pudding (a standard traction-control system will step in to save your tires unless you switch it off), the GTO runs not like a shuddering, rackety musclecar, but like a sophisticated executive's express. The muscle is certainly there: Under the hood lies the same 5.7-liter LS1 V-8 that powers some Chevrolet Corvettes
This is where things get interesting. The first model year of the GTO, 2004, had the 5.7-liter LS1 V8 under the hood. It was pretty much the same engine as the Corvette C5, developing 350 hp and 365 lb-ft of torque. Beginning the 2005, Pontiac replaced the 5.7-liter LS1 V8 with the new 6.0-liter LS2 V8. Neatly, this was the same unit as the C6 Corvette, which came out around the same time.
Surprise #5: Although it'll happily melt its rear BFGoodriches into rubber pudding (a standard traction-control system will step in to save your tires unless you switch it off), the GTO runs not like a shuddering, rackety musclecar, but like a sophisticated executive's express. The muscle is certainly there: Under the hood lies the same 5.7-liter LS1 V-8 that powers some Chevrolet Corvettes