Twin-Turbo 427 LSX Engine - Engine Builder Magazine

Twin-Turbo 427 LSX Engine

Looking to increase horsepower and decrease 1/8th-mile times, this Evo VIII owner opted to lose the 4G63 and swap in a custom-built, twin-turbo 427 LSX engine. Find out what went into the build.

Engine of the Week is presented by

We were recently contacted by Przemysław Komar on Instagram. In fact, we get quite a few messages through Instagram – admittedly, some are worth reading more so than others. The message from Przemysław was worth reading.

He sent over a few images of his new engine build in his Evo VIII. Obviously, we were instantly intrigued, and especially so because the engine images were not of a 4G63, which you’d normally expect to find in an Evo, but rather of a V8 engine.

Przemysław, who lives in Poland, owns a farming business with his family called Komar Group. The farm has existed since 1989 and specializes in growing fresh mushrooms, primarily for the Western Europe market. Komar Group also operates honeyberry and blueberry plantations and can cultivate crops year-round. 

Aside from farming, Przemysław is also a fan of speed. He’s been racing his Evo VIII for several years, always trying to improve his drag times. Recently, he decided to upgrade the engine in his Evo and opted for V8 horsepower courtesy of a 427 cid LSX build done by Jan Niemcewicz at Niemcewicz Racing.

The LSX build features a 427 cid Dart block, a custom crank, custom rods, Diamond boost pistons, Mast 290cc cathedral cylinder heads, a Brian Tooley Racing twin-turbo camshaft, Jesel rockers, a Holley Hi Ram intake, twin BorgWarner S400SX turbos, Turbosmart Power-Gate 60mm wastegates, and an ECU from ECU Master.

With this new twin-turbo 427 LSX engine all finished up, Przemysław and his Evo VIII will be looking to top his low-8-second quarter-mile times!

Engine of the Week is sponsored by PennGrade Motor OilElring – Das Original and Scat Crankshafts. If you have an engine you’d like to highlight in this series, please email Engine Builder Editor, Greg Jones at [email protected].

You May Also Like

All-Billet Subaru EJ 2.5L Engine

This 2016 Subaru STi, which features an all-billet EJ 2.5L engine, was built to showcase what Kaiju Motorsports is capable of. Not only does it look great, but all expectation is that it performs well too. Check it out!

Kaiju Motorsports 2016 Subaru STi with a billet EJ 2.5L engine

There’s always a lot to look at during the PRI Show given the countless cool parts, machines and engines to draw your attention. One car and engine bay that made me turn my head every time I passed it was Kaiju Motorsports’ 2016 STi Subaru with an all-billet EJ 2.5L engine inside. After seeing the Subaru a few times, I finally got the chance to speak with Kaiju Motorsports owner Brian Camacho about his shop and the Subaru, and it was well worth the chat.

Turbocharged Billet K24 Honda Engine

Noonan Race Engineering is well-known for its V8 engine platforms, but the shop has now dipped its toe into the 4-cylinder world with a billet K24 Honda engine. The objective – huge horsepower, while keeping factory creature comforts. Check it out!

ProCharged 5.000” Bore Space Billet Big Block Chevy Engine

One of the first 5.000″ bore space big block Chevy engines that Visner Engine Development has come out with in this new design, this billet engine was built by Nick Bacalis of Bullet Racing Engines for a 1971 C10 belonging to Michael Rieck. Check out what 4,000-plus horsepower looks like!

billet big block Chevy engine
3,500+ HP 427 cid Billet LS Engine

At ACE Racing Engines, Stefan Rossi’s and Laura Pugh’s hard work has been paying off in the form of increased awareness and business, a new shop space out in California, and best of all, success on the track from numerous customers. Check out this excellent example of a maximum effort, billet LS engine for a drag-and-drive application.

Supercharged 388 cid LS Engine

Hoping to reach new heights in the mile, this Cadillac customer brought his car and engine in for the School of Automotive Machinists & Technology to work their magic on. See what went into the supercharged LS engine platform.

Cadillac Supercharged LS engine

Other Posts

Breather Valley Plates for LS Engines by LS Classic

Precision machined from aluminum, these plates replace the stock valley plates found on Gen III and Gen IV LS engines.

Matt Stutzman’s 540 cid Supercharged Big Block Chevy Engine

We got a chance to spend significant time with Matt Stutzman during the 2023 PRI Show. He’s a Paralympic archer born without arms who’s now setting his sights on Top Sportsman drag racing. We caught up with him in the PennGrade1/DA Lubricants booth to get the details of his 540 cid big block Chevy engine,

LS Engine Flatout Gaskets

Flatout Gaskets LS valve cover gaskets are available in paper/silicone in 0.60″ or 0.120″ thicknesses or steel/silicone laminate in 0.50″ or 0.100″ thicknesses.

Demon Motorsports’ Turbocharged Toyota 2JZ Engine

It was hard not to noticed Damon Elff’s Toyota Supra and its turbocharged 2JZ engine during Sick Week 2024 as it was basically the only Supra there, and the 2JZ made some wicked sounds at the start line. We got a chance to speak with Damon, who owns Demon Motorsports, about his Supra/2JZ combo and