Home / Car Profiles / Rear Mounted LS1 Engine + 80s Porsche 911 Can Only Lead To Horrible, Awesome Things

Rear Mounted LS1 Engine + 80s Porsche 911 Can Only Lead To Horrible, Awesome Things

The Porsche 911. A precision machine built by stubborn German perfectionists. There is no mistaking a 911 when you see one. The engine is in the wrong place but after decades of engineering the placement of the engine is no longer holding the 911 back. The current model might be as close to perfect as modern times will allow.


Back in the 80’s this wasn’t exactly the case. Don’t get me wrong they were excellent machines for the day. However they had a very low tolerance for fools. Light front end meant the car would under-steer at the limit and if you continued pushing hard snap over-steer was lurking, waiting to pounce at the least opportune moment. Because of this the old air cooled Porsche’s are revered among Porsche enthusiasts. Something about the specter of death looming around every corner really resonates with them.


If someone were to resto-mod a classic 911 you’d expect them to go the Singer or Magnus Walker route. Basically keep the classic shape but update the innards with more modern components. What you don’t expect is for someone to drop an LS1 from a Corvette into the back. It is an unholy combination that neither camp is likely to be very fond of. Porsche purists will lose their shit that someone had the gall to remove a classic air cooled flat 6. Chevy small block guys will be pissed they wasted an LS1 on some euro car. But for the rest of us this is all different kinds of awesome.


The LS1 produces 390 horsepower and a similar number in torque. Power goes to the rear wheels via the stock Porsche 915 transaxle, rebuilt to handle the torque. In addition to the engine swap the body has not gone un-modified. The old base shell has been removed, in favor of recreating the RSR’s look. Koni coilovers, bigger wheels and brakes round out the build. All told the car only weighs 12 pounds more than stock. This is in large part to the custom body work as the LS1 is said to be lighter then the stock flat 6.


It may annoy the purists out there but this car embody’s the “Hot-Rod” spirit. Take a car that needs an engine and mate it with an engine that needs a car. It’s simple, people have been doing it for decades. Plus the mating of an LS with a Porsche transmission is not a new idea. Various mid engine kit cars use that exact combination. I love this car. I love the fact that it is what it is and does not give a f***. Did I mention this thing is for sale? Yup, click here and you can bid to own this beast. At time of posting the highest bid was only $21,000. So if you want something completely badass and guaranteed to piss people off this is the car for you.

About Chad Kennedy

Chad burst from the womb wearing a racing suit and a helmet. Chad's passion for cars is in his very DNA. His father was a gear head and passed on the tradition through owning such classics as a '66 Mustang and a '59 Corvette all while taking him to various race tracks in the area. Chad likes to wrench on his rides whenever possible, forgoing the stealership. Chad is an avid motorsports fan with particular interest in endurance/sports car racing. When not online writing for Shifting Lanes, you can find him working at the local golf course teaching people how to swing or hooning a golf cart at impossible speeds.

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One comment

  1. Hi. Great article. The additional weight isn’t from the bodywork. The bodywork was done before the engine was swapped. The radiator and new gas tank combination weighs more than the old gas tank did. That and coolant.

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