427 LS Engine

Our 427 LS Next Long Block Engine breaks barriers in performance engines! Utilizing Dart’s High Alloy LS Next SHP Iron Block as the foundation, huge power is there for the taking . with the addition of a proven 4340 Forged Long-Snout Crankshaft. For additional strength, we use 4340 Forged H-Beam Rods and 10.9 to 1 Forged Pistons. Our PM Proprietary CNC LS3 Rectangle Port 255-cc Aluminum Heads feature LS7 valve angles paired with LS3 intake runners for a miriad of manifold options. Hot Rod, Show-and-Go or Weekend Racer, this engine will surpass all expectations. Everything available from a short block to long block, turn-key carbureted or EFI and drop-in-ready with your pulley kit of choice. Turn-Key & Drop-In-Ready engine packages come dyno tested and every engine package is personalized for you & tailored to your ride.

What engine package works best for you?

408ci LS Engine

Our 408ci LS engine is a high-performance small-block built on an OEM 6.0L LQ cast iron block. It features a 4340 forged steel stroker crankshaft, I-beam rods, & forged pistons for strength and reliability. With a 4.030″ bore and 4.000″ stroke, this engine delivers excellent mid-range torque and throttle response. Topped with LS3 style as-cast aluminum cylinder heads, it’s perfect for hot rods, show cars, and weekend racers looking for a powerful, street-friendly setup.

427ci LS Engine

The 427ci LS Next engine takes performance to the next level. Built on a Dart LS Next SHP high-alloy iron block, it features a 4340 forged crankshaft, H-beam rods, and forged pistons for maximum durability under high power. It uses our PM CNC LS3 style heads with LS7 valve angles for improved airflow and broader intake compatibility. This engine is ideal for serious builds that demand more displacement, more strength, and more power potential.

Long Block vs.Turn-Key vs. Drop-In-Ready

Everything available from a short block to long block, turn-key carbureted or EFI and drop-in-ready with your pulley kit of choice. Turn-Key & Drop-In-Ready engine packages come dyno tested and every engine package is personalized-for-you & tailored to your ride.

Ultimate Turn-Key Package

Blow away the boundaries and eliminate all excuses. The Ultimate Turn-Key Package from Prestige Motorsports delivers everything you need to bring the vehicle of your dreams to life.

This comprehensive package combines all our most popular turn-key performance packages – engine upgrade, fuel supply, cooling system, and transmission – into a single crate. Only Prestige has the experience and resources to give you total peace of mind when it comes to a performance-driven, whole-vehicle build. Every Ultimate Turn-Key Package is a soup-to-nuts array of hand-picked components, all dyno tested and combined in the pursuit of the goals you set for your car.

Installation Services

We install engines too! Prestige Motorsports offers engine installation services and much more. When you invest in aftermarket performance parts, the success of your upgrade hinges on their proper installation. Too often, car enthusiasts buy into an upgrade or kit car only to get stuck when the build or install requires expensive tools or job-shop-type work. For this reason, Prestige Motorsports not only offers expert advice on performance auto parts and aftermarket upgrades; we also provide professional parts installation and upgrade services for all early and late model vehicles. To access our precision installation for everything from crate engines to rear-end upgrades, customers ship cars from across the country to Prestige.

Special Offers

Ultimate TurnKey Package

The Ultimate Turnkey Package covers every consideration and saves you money with a volume discount and a one-time shipping cost.

Testimonials

 5/5

Having approached a few local builders I quickly learned that nobody I approached offered warranty of any significance on rebuilt performance engines, but every single builder would do the work had I proceeded for a significant cost to me, all the risk being mine.

In 2011 I was looking for a local engine builder down here in Australia to rebuild my old modified 302 cu in engine. What I wanted was my original Windsor block rebuilt with all new rotating parts and the heads either changed out for Alloy or modified to seek more power. I also wanted to understand the warranty such engine builders would offer. I also wanted good horsepower and torque.

I was looking for a Ford 351W engine to fit in a GT40 replica and came across Prestige Motor Sports on the internet. After reviewing other engine builders in the UK and overseas it was apparent that Prestige gave better value for money and had a reputation for quality. Doug Aitken was extremely helpful and always responded quickly to my emails and requests for information. I got what I wanted, on time, on budget and with no surprises. After my engine arrived Doug was helpful as ever when I was looking for compatible, parts, oils, etc. in the UK. My only regret is that I shipped the engine myself and it took forever; despite Doug's efforts to deal with my shipper. I should have let Prestige handle that too. I can thoroughly recommend Prestige Motorsports.

Prestige Motorsports did a GREAT job on my 1932 Ford Truck. From the custom paint job to the extras that make the truck stand-out...expert and custom work all around. They stayed true to the price estimates that I was given and continued to be professional throughout my experience. I would highly recommend them for all of your custom car/truck needs.

These guys are great very friendly. They built a big block chevy for me and it runs great. They helped me any time I called them with questions on the installation of the engine. They are always willing to take as much time as needed to help you get through any problems you may have. I will definitely purchase my next engine from them.

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