Australian Tuners Have Made This LS V12 And You Can Buy One Soon

LS swappers rejoice! Everyone else… well, you might just want to stop reading right about now.

Australian entrepreneurs who obviously didn’t get the memo about cutting emissions have spliced together two three-quarter LS V8s on a custom crank and camshaft. Of the original two V8s, the middle four cylinders get thrown in the bin. But get this: on regular fuel and a “street-friendly cam” it’s good for more than 700bhp. Punchy. Apparently it maintains mostly original GM parts, too.

If, like us, you’re headed to SEMA this year then you’ll be able to see it up close. At the moment it’s a one-of-a-kind item, but its creators, the Corish brothers, have shipped it to the US for further testing before making it available for sale to anyone who wants one. Which, if the popularity of the V8 is any yardstick, will be everyone.

One of the great advantages of the LS V8 has always been its relatively small size, and the V12 is said to keep the length increase down to 8.8in. The makers are promising project builds at SEMA with the engine installed, too, although if the engine really is a one-off at this stage, we’re not sure how that’s possible.

Another question is whether the splicing process leaves the engine needing a vertical gasket after the fashion of 1960s British motorbikes. Which leaked oil. A lot.

Buyers will be able to take it as just the block and major moving parts, or an install-ready setup with fuel system, electrics, intake and exhaust included.

This video has been released showing the LS V12 in operation. We have to doff our caps to the guys that built it, but work is definitely still needed on the noise. It’s the weirdest-sounding V12 we ever heard. Check it out and let us know your thoughts.