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Here's your chance to own a 7.0-liter V8-powered, stick-shifted Cadillac Catera

Cadillac never stuffed a V8 engine into the Catera, the entry-level model it sold in the United States from 1997 to 2001, so American tuner Lingenfelter stepped in and offered to perform the conversion. One of the few cars it dropped an eight-cylinder into is for sale, and the bigger engine is just one of many modifications performed on it. Listed on auction site Bring a Trailer, this 2001 Catera lost its V6 soon after it was leased to its first owner in Warren, Michigan. Lingenfelter replaced the 3.0-liter V6 with a 5.7-liter V8 and ditched the automatic transmission in favor of a six-speed manual, but that wasn't enough; the owner sent it back for more. It left the shop again with a custom-built, 7.0-liter V8 between its fenders. It's essentially a Chevrolet Corvette C5.R-based block topped with LS6 heads, an LS6 intake, and a less restrictive exhaust. Its horsepower and torque outputs aren't available, unfortunately, but we assume the V8 easily doubles the stock Catera's 200-horse output. Cadillac marketed the Opel-built Catera as the Caddy that zigs, not as the Caddy that humiliates hot rods on a drag strip, so additional modifications were required to keep the V8's power in check. Highlights include a limited-slip differential, a lowered suspension with bigger sway bars, and beefier brakes all around. At one point in its life, this Catera also received 17-inch alloy wheels, a three-spoke steering wheel, and a sprinkling of V emblems. Although engine swaps are often hit or miss, this Catera has spent approximately 18 years and 40,000 miles with a V8 under its hood, so it's apparently a solid, well-thought-out build. It currently has 42,000 miles on its odometer, and it's located in Michigan. Bidding stands at $6,250 as of this writing, with five days left in the auction. It won't stay in the four-digit range for long, and it might end up costing as much as a late-model ATS-V, but when are you going to find another one like it? Related Video:   Featured Gallery 2001 Cadillac Catera with V8 engine, Lingenfelter modifications View 10 Photos Aftermarket Cadillac Performance Sedan

GM considering new powertrain options for large SUVs

Aside from the new General Motors offerings, there's not a whole lot of action going on in the fullsize SUV segment. That doesn't seem to be stopping GM from pushing the envelope in the market as Automotive News is reporting that the automaker is looking to introduce some new powertrain options into the Chevy Tahoe (and Suburban), GMC Yukon (and Yukon XL) and the Cadillac Escalade - all have been redesigned for the 2015 model year.
Now, we already know that GM and Ford are collaborating on nine- and ten-speed transmissions for a broad range of applications (including the big SUVs), but this new report says that GM is also considering other options as a way to one-up the competition and, of course, to optimize fuel economy. AN quotes Jeff Luke, executive chief engineer for GM trucks, as saying that "interesting powertrain technologies" are coming including a return of a hybrid SUV and possibly even a diesel engine. Although it sounds like the latter could come down to how customers respond to the 2014 Jeep Grand Cherokee EcoDiesel.

Carpool Deville aims to be the world's fastest hot tub

The world needs crazy inventors with wild dreams. While we might not long for the things that they create, their contraptions certainly make the day a little more enjoyable. Take the Carpool Deville as an example. Nobody (well, almost nobody) is asking for a hot tub fashioned from a 1969 Cadillac that is still drivable. But now that you know that such a beast exists, don't try to tell us you aren't at least intrigued.
The team behind the six-year-long project has a pretty ingenious setup worked out. The Caddy's original 472-cubic-inch (7.7-liter) V8 both provides propulsion and heats the water. The interior is entirely replaced with a watertight, fiberglass tub that includes working jets, and the controls are all done by hand.
As if just building a mobile hot tub isn't enough, the team behind the Carpool Deville plans to take it racing too. Specifically, they intend to go to the Bonneville Salt Flats later this year to make a top speed run while immersed in water at over 100 degrees. They even have a roll cage all set to install to meet the safety requirements there.