Live rear axles give more hop. Mustangs, for example.

So how much aftermarket for the new 3.6L vvt-i you think there is going to be? The GP is prob going to be chaging over to it also in 2006, along with the 5.3L v8 for the GXP version
Check out this 2007 car!
Quote, Unquote

Power to move the Velite comes from Buick’* experimental twin-turbocharged, intercooled global V-6 engine. Four hundred horsepower and 400 lb.-ft. of torque are derived from its DOHC design and 3.6-liter displacement. The engine features fuel-saving variable valve timing technology, which is available on some of GM’* four-, five-, six- and eight-cylinder engines. Through the use of variable engine valve timing, valve lift and duration is continuously varied to improve fuel economy, horsepower and torque, while reducing emissions.

The V-6 is backed by a Hydra-Matic 6L80-E six-speed, rear-wheel-drive automatic transmission equipped with manual tap-shift gear selection. A pair of large, oval exhaust outlets provides an aural reminder that performance is very much a part of the vehicle’* character.

My Trans Am has zero wheel hop except in reverse and it'* a live axle. My 95 Tbird SC had IRS and it would wheel hop 50% of the time I'd light the tires up.

I got the info from the Febuary 2004 Road and Track

http://www.roadandtrack.com/assets/d...2004154854.pdf

http://www.roadandtrack.com/article....ber=2&preview=

CTS-V," the 3500 Vs expected to be sold in the U.*. for 2004 will have only the 6-speed manual." " CTS-V hits 60 mph in 5.0 seconds flat, and the quarter mile in 13.4 sec. at 109.0 mph. Although that'* not quite as quick as GM'* claim of 4.6 sec. to 60 mph, the V is nevertheless a very fast car."

Well, I'm no expert, it'* just what I read...

I got to looking on the web it seems that IRS is notorious for wheel hop especially in the Mustangs but as I recall a solid axle car with weak rear springs or shocks will also wheel hop badly. Also weak lower control arms that flex can affect wheel hop.

The only mustangs with IRS are Cobras, correct? Before I mentioned Mustangs, and meant non-Cobas.