New LSx Retro Fit Project - 1968 Firebird with 350 small block. This Firebird's power plant is being upgraded to a Stage 2 LS3 with 500 Horse Power. Be sure to check out our other Retro-fitted cars on our LSx Retro-Fit projects page.
Check Out this video about one of our customers, Skuli Skulason and his son's 1968 Camaro LS3 Conversion project. It was done in four months, after two years of planning. All the work was done by the father/son team with a help from few friends who wanted to be a part of the project. Southern Performance Systems supplied all of the parts and "Did a hell of a job in a relatively short notice and backed us up 100%." Skuli and his son live in Iceland, a long way from US and needed a supplier that was reliable. On top of the Turnkey Engine Package, SPS also supplied the suspension, steering, brakes, cooling, fuel system and dash gauges. The car is amazing and drives like a modern sports car with a real muscle ingredients.
Southern Performance Systems was founded in 1994. Located in Sugar Hill, Georgia outside of Atlanta, Southern Performance Systems specializes in providing the most complete "Turn-Key" LS engine packages for classic cars, muscle cars and trucks. In addition to engine packages to make a LS conversion complete we offer upgrades for brakes, suspensions, rear ends, air conditioning, electronic gauges, radiators and headers. Years of being an install center, doing design work and testing have made us a leader in the LS conversion market.
GM has changed their ECM programming polices. ECMs that are 2010 and Later may have to be replaced with new units in order to program them. This is based on your engine and transmission combination.
WE PROVIDE ECM REPROGRAMMING FOR YOUR ENGINE'S ECM
Swapping LS and LT Engines into older Classics and the Muscle Cars of yesteryear is currently the hottest thing going on in the Hot Rod industry. With modern technology being combined with Classics, there are now 100s of components that make it all to easy to do LS/LT Swaps. So much can be done that you are only limited by your budget. When done right, swapping an old small block for a LS or LT engine will improve your performance, drive ability, mileage and most importantly Reliability. SPS can supply you with naturally aspired engines from 360HP to ground pounding Supercharged engines pushing 1,000 HP that can still be driven on the street everyday. Throw in a few brake and suspension upgrades and you got a classic that is reliable and dependable that you can drive anywhere.
Engine options include LS1-LS2-LS3-LS7 in GM's Automotive Line and 5.3L-6.0L-L92-L9H for GM's Truck Line. The GM Performance Line offers the 480 & 525 Horse Power LS3s plus the LSx 376 and the LSx 454. Horse power options for the factory and performance LS engines range from 300 to 665. SPS offers custom builds using aluminum block and the more serious LSx block. For the budget-minded, there are some good used take-out engine available at great prices.
All engine management harnesses are custom made to fit each engine/transmission package. Along with the harnesses that we offer, SPS also offers GM Factory ECMs (Engine Control Modules) and TCMs (Transmission Control Module) and custom programming. Each harness comes with Check Engine Light and Factory Diagnostic Plug which can be scanned by any shop with the right equipment. We also offer Holley ECM Controllers and harnesses for automatic or manual transmissions as well as FAST Electronics and Comp-U-Shift transmission controllers. Along with the LS engines harness, SPS now offers Harnesses and ECM Programming for the LT1 Line.
LS and LT engines swaps require Fuel System upgrades with higher performance internal or external fuel pumps. SPS offers direct-fit fuel tank upgrades for many of the classic cars out there. While the LS engines require 58psi, it is important to remember that the LT engines need 72psi. From a standard in-take system to a PWM (Pulse Width Modulated) system controlled by the ECM, SPS can help you design you prefect fuel system.