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Southern Performance Systems

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Sugar Hill, GA
Southern Performance Systems

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

08/13/2026

🔥 2 LT4 CRATE ENGINES IN STOCK AND READY FOR IMMEDIATE DELIVERY! 🔥

Ready to unleash 650 horsepower?

Meet the Chevrolet Performance LT4 crate engine — the same supercharged 6.2L beast that powered the Corvette Z06 and Camaro ZL1… now available as a drop-in crate engine for YOUR project!

✅ 650 HP
✅ 650 lb-ft of torque
✅ Eaton supercharger with intercooler
✅ Direct injection + Variable Valve Timing
✅ Forged internals built to handle serious boost

Whether it’s a classic muscle car, restomod, or custom build — this thing turns heads and lays down serious power on pump gas.

No compromises. Just pure, modern Chevrolet Performance.

Call for Pricing

Tag a friend who needs this under their hood 👇
Drop a 🔥 if you’re ready to go supercharged!

08/12/2026

THIS IS NOT A BUILD… IT’S A DECLARATION OF WAR Meet the absolute animal we just finished:LSX 408 cubic inch — stroked, fortified, and built to take a beating.

Bottom end is pure Manley muscle:
• Manley crank
• Manley rods
• Manley pistons
• Manley camshaft

All of it locked down with ARP bolts while a Melling oil pump keeps everything happy with a rock-solid 66 lbs of oil pressure.

The valvetrain is equally serious — Trend pushrods, Johnson lifters, and T&D shaft rockers with roller tips keep everything stable and precise under extreme load.

Up top you’ve got MAST Performance heads flowing serious air, and the real chaos maker: a Whipple 4.5L supercharger force-feeding the motor with 11 lbs of boost.

The results?
1,200 horsepower at 6,000 RPM
1,081 lb-ft of torque at 5,000 RPM

That means brutal mid-range pull and a top-end that will pin you to the seat. This thing doesn’t just make power — it makes power the hard way, under boost, with strength built into every rotating assembly part.

It’s loud. It’s mean. It’s ready to punish tires and egos.

Price: $39,900 - LAST ONE IN STOCK

It’s loud. It’s mean. It’s ready to punish tires and egos.

Who wants to hear the first cold start?

08/10/2026

🔥Check out this beast from Southern Performance Systems!🔥

LS3 with Whipple Superchargers GEN 6 3.0L Inverted Hot Rod Supercharger

We’ve topped a rock-solid GM LS3 6.2L with a low-profile Whipple inverted supercharger and dressed it out with a razor-sharp Concept One Pulley Systems 10R 10-rib pulley system. Perfect hood clearance, serious boost, and that signature twin-screw howl.

To handle the boost we lowered the stock compression with Cometic Gasket, Inc. head gaskets and fully reinforced the bottom end and top end with ARP head, main, and rod bolts. The result? Instant tire-shredding torque the second you plant your foot… clean billet looks… street manners by day, absolute animal by night. Tuned and ready for reliable 750 hp performance.

Turnkey Engine Package Price: $24,900
Includes the complete assembled supercharged engine, Concept One billet serpentine system, custom wiring harness, programmed ECM, application-specific oil pan, valve covers, and all the supporting components needed for a drop-in ready install.

Today’s muscle engines for yesterday’s cars. Looking for the perfect powerplant for your hot rod or resto-mod?
Call us at 678-482-0866

https://www.southernperformancesystems.com/main-gallery-hub/custom-engine-gallery/supercharged/ls3-whipple-inverted-30l.html

07/17/2026

🔥Patriot Missile Ready for Launch! 🇺🇸

Meet the SPSeries LS376/560 Patriot Missile from Southern Performance Systems — a show-stopping, naturally aspirated 560-horsepower LS engine with serious attitude.

This beauty is custom painted in bold red and blue with polished components that give it a brilliant “white glow.” It’s equipped with Concept One Pulley Systems Victory Series serpentine pulley system for that clean, professional look under the hood.

How we make the 560 hp happen:

-Custom-ground camshaft from COMP Cams
-Upgraded dual valve springs
-Precise custom dyno tuning

The result? Strong, reliable power that’s perfect for hot rods, resto-mods, and classic muscle cars. Built for drivers who want modern performance in yesterday’s rides.

For additional photos and to visit our website:
https://www.southernperformancesystems.com/main-gallery-hub/custom-engine-gallery/naturally-aspirated/spseries-ls376-560-patriot-missle.html

Would you drop this into your classic? Let us know in the comments!

This engine was built by Southern Performance Systems for one of our awesome customers. If you would like something similar or even a more basic LS package please give us a call at 678-482-0968.

07/09/2026

Just over 24 hours to secure your LS3 crate engine at our best prices this year Give us a call at 678-482-0866!

07/02/2026

🔥BIG NEWS for Chevy Builders & Enthusiasts! 🔥

We’ve got 12 Chevrolet Performance Crate Engines sitting on the floor READY TO SHIP right now!

This is our special 4th of July Sale celebrating the 250th Anniversary of the Independence of the United States of America! 🇺🇸

Whether you’re dropping serious power into a restomod, street rod, hot rod, or track weapon — we have the horsepower you need in stock today:

* LS3 430hp – The legendary, reliable powerhouse perfect for daily-driven builds
* LS376/480 495hp – Serious performance with that extra kick
* LS376/525 525hp – Pure muscle for when you want to dominate the road or strip

These are brand-new, genuine Chevrolet Performance crate engines — ready to make your project scream.�

Limited stock. Once these 12 are gone, they’re gone. Don’t wait weeks for backorders from the dealer!

Call Us Now at 678-482-0968 for July 4th pricing, availability on specific models, and shipping options. SALE ENDS JULY 10TH, 2026

Local pickup also available.

Tag a friend who needs an LS in their life!

07/01/2026

🔥 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 this beast and dressed it out with a razor-sharp Concept One Pulley Systems Max 10R 10-rib setup. The inverted Whipple sits nice and low for perfect hood clearance in your classic or restomod, while the dedicated 10-rib belt handles big boost without breaking a sweat. This thing delivers massive low-end torque that’ll pin you back in the seat the second you mash the throttle — street manners by day, tire-shredding monster by night. Clean billet looks, that signature twin-screw whine, and enough power to push well over 1,000 HP on the right setup. Built on a stout GM LSX454 foundation with premium components throughout.

Who else is running a big-inch LS with a Whipple? Drop your combo, peak boost, or just a 🔥 below!

👉Full build details here: https://www.southernperformancesystems.com/main-gallery-hub/custom-engine-gallery/supercharged/lsx454-whipple-inverted-30l.html

Southern Performance Systems
678-482-0866
Today's Muscle Engines for Yesterday's Cars

06/23/2026

🔥700HP Misty Blue LS3 Beast 🔥

This custom-built LS3 was built by Southern Performance Systems — and it’s an absolute stunner! Finished in that gorgeous Misty Blue Metallic paint that pops under the lights with showroom-level details everywhere.

Built Specs:
* CNC-ported cylinder heads with Inconel valves (nickel-based superalloy that delivers extreme heat resistance, strength at high temps, and superior durability — ideal for high-horsepower and boosted applications)
* Powder-coated Holley cast aluminum Plenum intake
* Billet fuel rails with hand-bent stainless steel crossover tube
* Custom hand-made steam line (vents trapped air & steam from the heads to prevent hot spots and keep temps even)
* 102mm drive-by-wire throttle body
* Billet aluminum serpentine belt system from Concept One Pulley Systems
* Black finned valley cover

Estimated output: 700 horsepower

Clean, aggressive, and ready to rip. This thing is going to look as sexy as it sounds.
Would you drop this in your build? Drop a 🔥 below if you’re obsessed with dressed-up LS engines!

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

Address

4530 Bamford Drive
Sugar Hill, GA
30518

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm

Telephone

+16784820866

Website

http://spsengines.com/, https://southernperformancesystems.com/

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