The Cadillac CTS-V is already a formidable performance sedan, but for some, factory performance isn’t enough. This build chronicles the journey of transforming a CTS-V into a true powerhouse with a focus on enhancing its already potent LSX engine. Originally built by Aldo Welds and further modified by LME in Houston, this CTS-V boasts an impressive array of performance parts, setting the stage for even more upgrades.
Phase One: Initial Build and Performance
The foundation of this build was a 377ci LSX engine meticulously crafted with top-tier components:
- Short Block: Callies billet crank and Pro billet rods, custom pistons with upgraded wrist pins, 4.070 bore.
- Heads and Valvetrain: Brodix BR3 CNC ported heads, upgraded valvetrain, double roller timing chain.
- Forced Induction: CNC Rick Crawford blower with a GripTech 2.38 upper pulley.
- Fuel System: ID1300x injectors, Fore Innovation triple pump setup, Fore fuel rails, Aeromotive regulators.
- Other Notable Components: ATI balancer, 9.55 TPIS throttle body, 5″ intake, Stainless Works headers, custom ice tank, Maximizer 4 progressive controller, NX spray bar kit, custom fuel cell, built transmission, DSS axles and driveshaft, Santhuff front coils, Wilwood brakes, and Weld racing wheels.
This initial setup delivered impressive results on the dyno:
Phase Two: Engine Refresh and Upgrades
Despite the already impressive performance, the owner opted for a comprehensive engine refresh and upgrade by LME, focusing on a 400cid package. Key elements of this rebuild included:
- Short Block: Callies Magnum 4340 forged crankshaft, Diamond custom forged pistons with internal milling and gas ports, Trend upgraded wrist pins, Total Seal piston rings, upgraded bearings.
- Long Block Assembly and Dyno Testing: Degreeing the cam, checking piston-to-valve clearance, adjusting valvetrain geometry, installing oil pump and heads.
- Cylinder Heads: Cleaning, inspection, competition valve job, milling heads to desired chamber volume, Cometic MLX 6-bolt head gaskets.
- Camshaft and Valvetrain: Custom Cam Motion 8620 billet core camshaft, Johnson high RPM tie bar lifters.
Phase Three: Addressing Potential Issues and Future Plans
During the engine removal, pinholes were discovered in the supercharger snout. Jokerz Performance was enlisted to address this issue, showcasing their expertise in supercharger repair and restoration.
Future modifications are centered on cooling improvements, potentially incorporating a Track Attack HX, a new intercooler brick, and exploring an external oil cooler setup similar to the one discussed in FlyingV’s thread to alleviate some of the cooling load from the coolant system. The goal is to further optimize performance and ensure reliability under demanding conditions.
This Cadillac Lsx build exemplifies the dedication and passion involved in pushing the boundaries of performance. By combining meticulous planning, high-quality components, and expert craftsmanship, this CTS-V has been transformed into a true force to be reckoned with.
