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THOMSON'S NATURALLY ASPIRATED ENGINES MAKE BIG POWER WITHOUT A BLOWER OR TURBO

Our new LS2 and LS3 engine combinations makes great, economic alternatives to many other power-building options – giving you LS7-like horsepower for less than the cost of a bolt-on supercharger kit! Use it as a simple replacement for your LS1/LS6-powered C5, an LS2/LS3-powered C6 or any other LS-powered car. It also makes a great swap engine for classic cars.

Thomson Automtive's LS2 and LS3 engines use simple yet effective parts to optimize airflow and increase power without the need for a blower. You'll get great idle quality and drivability, without the installation and fabrication hassles of a bolt-on power-adder. Tell us the car you want to swap the engine into and we'll even give you pointers on the tuning you'll need.

Email us at: info@thomsonautomotive.com or call as at 248-349-0044 to discuss your project.

 
 
affordable ls2 performance

Thomson Automotive's Custom Engines Deliver up to 550 HP!

As the power behind the Corvette, GTO and the SSR, the LS2 engine delivered great bang for the buck — and it remains an excellent choice for affordable high-performance today. It's perfect for your late-model muscle car, resto-mod vintage car or off-roader.

Thomson's engine builders have developed several recipes for building LS2 power, starting with a factory core engine:

  • A simple cam swap (and complementing components) delivers an easy 450 horsepower!
  • Building a 402-inch stroker — larger displacement than the LS3 — can produce 550 horses or more and up to 550 lb.-ft. of torque!

Our 402-cube stroker engines include the following:

  • 4.00-inch-stroke and stock cylinder bores
  • 4340 forged steel crankshaft
  • CNC-ported cylinder heads
  • Custom-grind camshaft and more

We can build an LS2 to almost any power level you desire. All of our LS2 crate engines include the ignition coil packs, intake manifold, throttle body, water pump and damper. We offer a variety of oil pan options, too, to fit your vehicle.

For those interested in carbureted performance, we also offer aluminum four-barrel intake manifolds.

Every LS2 crate engine is tested and broken in our in-house engine dyno, with the complete performance results delivered with the engine.

LS2 crate engine packages start at $5,500 for stock-displacement engines. Call us for a quote on a 402 stroker. No core exchange is required on our LS2 engines!

Thomson Automotive is a leader in high-performance LS engines. We've spent countless hours designing, building and dyno-testing street and strip engines, from production-based, normally aspirated engines to custom, forced-induction and nitrous engines. We know what works.

Give us a call and let us build a high-performance LS2 crate engine for you!

Thomson's LS2 is just the thing to give your late-model muscle car an affordable power boost.
Step up your LS2 engine with a 4.00-inch stroker crankshaft for a high-performance, 402-inch monster
Like our Ultimate LS2 engine, we use nothing but racing-quality forged rotating components that withstand high-rpm, high-boost punishment.
We equip your LS2 with a factory-style port injection system or a carbureted induction system that is great for drag racing or older, non-computer-controlled street rods and muscle cars
thomson automotive's ultimate ls7 performance engine

Tire-Killing Capability with 550-650+ Horsepower!

The LS7 engine is a legend in its own time. With more than 500 horsepower from the factory, it delivers power that was reserved for race cars only a few years ago.

But as powerful as the LS7 is, we couldn't help but explore its capabilities. The result is Thomson Automotive's range of Ultimate LS7 performance engines. We start with a LS7 7.0-liter (427-cu-in) core and perform the following upgrades:

  • Bore and hone the cylinders with torque plates
  • Rebalance the rotating assembly
  • Replace the factory cast pistons with stronger forged aluminum pistons
  • Install custom, file-fit piston rings
  • Install one of our custom-grind camshafts
  • Add stronger valve springs and retainers to withstand the lift of the new cam
  • Available in dry-sump or wet-sump configurations

Our most basic upgrade delivers about 550 horsepower, while our most radical cam enables 650 horsepower or more!

We also offer a number of component upgrades to suit your needs, as well as a variety of oil pan applications to fit your vehicle.

When it comes to engine assembly, Thomson's experienced engine builders meticulously measure and re-check tolerances and clearances to ensure the engines make big power reliably.

Ultimate LS7 engines start at $14,995. (No core exchange required.)

Thomson Automotive is a leader in high-performance LS engines. We've spent countless hours designing, building and dyno-testing street and strip engines, from production-based, normally aspirated engines to custom, forced-induction and nitrous engines. We know what works.

Give us a call and let us build an Ultimate LS7 performance engine for you!
NOTE: Electric water pump shown in photo is optional.
Thomson's Ultimate LS7 uses an all-forged rotating assembly. We replace the factory cast pistons with stronger forged aluminum and match them with bored and honed cylinders.
We use a variety of custom camshaft grinds to tailor the Ultimate LS7's performance to your needs. We can build more than 650 horsepower that's suitable for the street or strip.
All of our engines are broken in and dyno-tested to verify their performance. From first twist of the torque wrench to the final pull on the dyno, we do it all, delivering to you a ready-to-rock engine package.

 
flexplate kit
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