Xjs Convertible. Showroom Condition! on 2040-cars

Auto blog

This classic Jaguar XJ has a 720-hp ungentlemanly secret

Forget Tawny Kitaen. If you want to make a Jaguar XJ rock, just do what this guy did: stuff a heavily modified and turbocharged General Motors V8 under the hood, and take it to the track.
The video calls this Series 1 XJ a sleeper, but with its open exhaust and obvious turbo whistle, the once-gentlemanly sedan is anything but. The owner says that the engine is GM LQ9 V8 that has been stroked to 402 cubic inches putting out around 720 horsepower with 12 pounds of boost (in standard form, this 6.0-liter V8 was used in the second-gen Cadillac Escalade). Check out the video below to see what that kind of power does for this classic Jaguar in the eighth-mile.

Jaguar testing hardcore F-Type R-S GT?

Some automakers make a hardcore model, then sit back and revel in its awesomeness. Jaguar does things a little differently. It takes a standard production model, gives it more power, bigger brakes and a tighter suspension and slaps the letter R on it. Then it gives it even more power, even bigger brakes and an even tighter suspension and calls it an R-S. Sometimes the engineers in Coventry don't even think that's enough, so they strip out some weight and dial things up even further and call it an R-S GT.
So far, they've only gone that far with the XK (transformed first into the XKR, then the XKR-S, and finally the XKR-S GT), but with that model on its way out, Jaguar seems to be preparing to give the newer F-Type a similar treatment. Now we can't be sure that what we're looking at is an F-Type R-S GT, especially since the 550-horsepower engine from the XKR-S and XFR-S is already powering the existing F-Type R Coupe, but it does seem to have all the makings of a hardcore performance model.
Compared to the existing F-Type, the development model pictured here has a bigger front splitter (like the one on the Project 7 concept), a big rear wing and a set of what looks like pretty big lightweight alloys. It's also, tellingly, a roadster, which (unlike the coupe) has until now topped out at 500hp with the V8 S model. So while it may be hard to say exactly just what Jaguar has in store for us here (or what they'll call it), one thing's for sure: it's gonna be fast and loud.

Submit your questions for Autoblog Podcast #323 LIVE!

We're set to record Autoblog Podcast #323 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #323
Lamborghini Veneno