Southern Performance Systems

06/08/2026

🔥Check out this stunner from Southern Performance Systems!

The SPSeries LSX427 Red is a naturally aspirated 427ci LSx powerhouse dressed in deep, rich Velvet Red with full billet dress-up. Featuring a Callies rotating assembly, billet serpentine system, and hidden coil packs under custom billet valve covers, this engine looks as mean as it runs.Dyno-proven at 671 horsepower, this is a turn-key modern muscle engine built for classic cars, hot rods, and resto-mods.

Today's Muscle Engines for Yesterday's Cars — done right! 💪

Who else loves a clean, high-horsepower naturally aspirated LS build? Drop a 🔥 below if this is your style!

05/18/2026

Our SPSeries LSX427 with Dual Plenum Intake, finished in a deep, rich Velvet Red!

This 427 ci naturally aspirated beast features twin throttle bodies on a striking dual plenum setup, premium Callies rotating assembly, and dyno’d an impressive 625 ft-lbs of torque. Modern LSX power wrapped in classic hot rod style — perfect for your resto-mod or street rod.

Bold. Powerful. Beautiful. Exactly what we mean by “Today’s Muscle Engines for Yesterday’s Cars.

”Who else wants this under their hood? Drop a 🔥 below if this engine bay speaks to you!

More details & photos: https://www.southernperformancesystems.com/main-gallery-hub/custom-engine-gallery/naturally-aspirated/spseries-lsx427-dual-plenum-intake.html
Southern Performance Systems
Chevrolet Performance Authorized Reseller

05/11/2026

Meet the ZZ632/1000 Black built by Southern Performance Systems. This massive 632 cubic inch big-block delivers 1,025 horsepower and 888 lb-ft of torque with zero boost — just raw displacement and Chevrolet Performance DNA mixed with a bit of SPS style.

05/11/2026

Southern Performance Systems
🔥 1,025 HP of Pure Naturally Aspirated Mayhem! 🔥

Meet the ZZ632/1000 Black built by Southern Performance Systems. This massive 632 cubic inch big-block delivers 1,025 horsepower and 888 lb-ft of torque with zero boost — just raw displacement and Chevrolet Performance DNA.

Dressed in a menacing all-black finish, it’s topped with a Hogan Racing intake and features the clean Concept One Big Block Victory Series serpentine kit for a professional, show-ready look under the hood.

This isn’t just an engine — it’s a statement.

Perfect for your next Pro Touring, resto-mod, or street/strip monster.

Tag someone who needs this in their life! And visit spsengines.com today!

05/04/2026

Eye-Catching LS3 Just Dropped!

Check out this stunning LS3 with Borla Injuction from Southern Performance Systems! Dressed in a rich, vibrant blue with a premium Borla 8-stack fuel injection system on top, this engine combines old-school hot rod looks with modern performance. The individual throttle bodies deliver sharp throttle response and strong mid-range power, all while running clean and reliable on modern EFI.

Specs highlights:
*480 horsepower
*Fully dressed with polished billet serpentine belt system
*Perfect for restomods, classic trucks, hot rods, and muscle cars

Today's muscle for yesterday's rides — turnkey and ready to drop in!

See full details & photos here: https://www.southernperformancesystems.com/main-gallery-hub/custom-engine-gallery/fuel-injection-stack-systems/ls3-borla-injection-blue.html

Questions? Call Southern Performance Systems at 678-482-0866

04/29/2026

🚨 Shop Tour Alert! 🚨
If you're serious about LS engine swaps, you need to know Southern Performance Systems (SPS) in Sugar Hill, Georgia.

SPS has been doing conversions since before it was cool (since '94!) and have grown into one of the top one-stop shops for LS swap tech. From complete turn-key engine packages to their unique Connect & Drive kits, custom brackets, and modern upgrades — they build, test, and sell the good stuff right in-house.

Featured in the build: a clean '55 Chevy getting an LS3 swap with Wilwood brakes, Heidts suspension, big aluminum radiator, and Vintage Air — turning a classic into a modern performer.Whether you're dropping a modern LS into a vintage Chevy or building a sleeper, SPS makes it easier and more reliable

Check out the full shop tour here:
https://www.chevyhardcore.com/news/stateside-shop-tour-sps-a-leader-in-engine-swap-technology/

Who else is planning their next LS swap? Drop your dream build below.

Southern Performance Systems (SPS) in Sugar Hill, Georgia, is a small group of awesome people that really stand behind their work.

04/24/2026

🔥 Holy boost, Batman! This LSX 454 just woke up with some SERIOUS attitude! 🔥

We dropped a Whipple Superchargers GEN 6 3.0L Inverted Hot Rod supercharger on top and dressed it out with a razor-sharp Concept One Pulley Systems Max 10R 10-rib pulley system. That inverted Whipple sits nice and low for perfect hood clearance while the dedicated 10-rib belt laughs at big boost.

Big shoutout to little Miss C, our newest shop intern — she helped her Dad with assembling the motor and made sure every billet piece was gleaming. First day on the job and she’s already wrenching on 1,000+ horsepower builds. Future is bright with this one! 👏

This beast is built to deliver massive torque that’ll pin you to the seat the second you mash the throttle. Instant grin every single time.

Clean billet looks, twin-screw whine, and enough low-end grunt to destroy tires in any gear. Street car by day… tire-shredding monster by night.

Who else is running a big-inch LS with a Whipple?

Drop your combo, your peak boost, or just a 🔥 if you’re feeling this one!

04/22/2026

Father and son LS3 Camaro 68 conversion project in Iceland!

This is a full documentation of our epic father-son build: swapping a modern LS3 engine into a classic 1968 Chevrolet Camaro. After two years of careful planning, we completed the entire project in just four months — with most of the work done by us, with a little help from a few good friends.

We handled the suspension, steering, brakes, cooling system, fuel system, and even upgraded the gauges in the dash. All the key parts were supplied by John Tucker at Southern Performance Systems (SPS), who delivered incredible support and quality — something we really needed living all the way out here in Iceland, far from the US.

The result? A stunning classic Camaro that drives like a modern sports car, while still keeping that raw, authentic muscle car character.If you love restomods, LS swaps, or father-son garage projects, this one’s for you!

Are you looking for a new parts for your classic Muscle Car or Hot Rod? Give us a call at 678-482-0866.

131 likes, 47 comments. "Ls3 Camaro 68 Conversion Project in Iceland"

03/30/2026

🚨🚨Looking for turnkey LS power for your Pro Street, Pro Touring, or Street Rod build? Southern Performance Systems has you covered with serious options!
ProStreet LS3/430 Package – 430 HP of reliable, street-friendly LS3 power: Fresh LS3 crate engine with performance heads, cam, intake & injectors
Factory-style accessories, custom harness + programmed ECM
Application-specific oil pan kit + all sensors

Upgrade to the Street Rod LS376/560 Package – Crank it up to 560 HP with upgraded internals (Comp Cams high-performance cam, LS3 performance heads, hypereutectic pistons, etc.)!
This beast comes fully turnkey with the premium Concept One Victory Series Serpentine Pulley System:Polished alternator, power steering pump, tensioner, Fluidampr balancer, water pump, polished A/C compressor, billet pulleys & brackets, polished thermostat housing. Super-compact design (max 22.75" wide) – perfect for tight hood clearance

Both packages include custom wiring harness, ECM tuning, electronic pedal, and more. Headers not included.
Pricing:
ProStreet LS3/430 → Engine only: $15,170 | +4L70E: $21,040 | +T56 Magnum: $20,365 | +6L80E: $20,700
Street Rod LS376/560 → Engine only: $19,455 | +4L70E: $25,595 | +T56 Magnum: $24,600 | +6L80E: $24,985

From solid street power to high-horsepower weekend warriors — SPS has the perfect LS drop-in solution! Which one would you run in your build? Drop a comment below:
ProStreet LS3: https://www.southernperformancesystems.com/engine-packages/prostreet/prostreet-ls3.html
Street Rod LS376/560: https://www.southernperformancesystems.com/engine-packages/street-rod-series/street-rod-ls376-560.html

03/17/2026

🚨Street Rod Power Just Got Stupid🚨 The Southern Performance Systems Street Rod ZZ632 Turnkey Package is here — a complete, ready-to-run monster based on Chevrolet Performance’s biggest and baddest crate engine ever.
✅632 cubic inches of pure big-block fury
✅1,004 HP @ 6,600 rpm
✅876 lb-ft of torque @ 5,600 rpm — all on pump gas!
✅Tall-deck block, forged rotating assembly, Pro Stock-inspired RS-X heads, EFI, hydraulic roller cam, and more
✅Full Street Rod Series turnkey setup: billet aluminum serpentine belt kit, wiring harness, ECM, and everything you need for a clean install under the hood of your classic ride.

Built for street rods with limited engine bay space but zero interest in being slow. This thing doesn’t just move the needle — it rips the whole gauge cluster out.

Who’s dropping this beast into their next build? Drop a below or tag a friend who needs one in their life.
Shop it now → https://www.southernperformancesystems.com/engine-packages/street-rod-series/street-rod-zz632.html

We built Custom LSx Series Engine for Classic Muscle Car & Hot Rods. www.spsengines.com