Because D3 pulleys are developed exclusively for Cadillac engines.
Not all LS-series motors are the same, period. D3 Pulley Kits are Ultra-Light Weight & Blueprinted from the ground up exclusively for the harmonics of the CADILLAC CTS-V LSA motor. The D3 Boost Pulley Kits is the lightest boost drive pulley on the market and is 100% SFI approved. Designed in CAD exclusively for the CTS-V, the D3 Pulley Kit has been mastered and engineered long before any other system on the market D3 Pulley Kits have been the first on the market to utilize our proprietary sizing for the CTS-V application.
Weight has been drastically reduced by an amazing 5 lbs with which allows the pulley to spin freely and without restriction under load. D3 Harmonic Dampers offer the most precise and advanced execution of the proven elastomer-style harmonic damper (also called Torsional Vibration Damper) design. Most engine designers prefer elastomer-type dampers because of their durability, superior high-frequency damping qualities, and ability to dampen all types of vibrations: torsional, axial and radial. Other damper designs are limited to damping torsional vibrations only.
All D3 Pulley Kits are manufactured in the USA out of T-6061 billet aluminum and CNC Machined to MILSPEC tolerances for unparalleled quality.
D3 pulley kits include the Harmonic Balancer, Belt, and Bolt & Pulley. No additional parts or hardware are required for proper installation.
+ 3PSI \ +~30 HP
The D3 Stage 1 Pulley Kit allows for an increase of 3psi. This increase is power significantly adds horsepower without sacrificing the OEM ride quality you would expect from a Cadillac.
The stage 1 pulley kit the vehicle will operate with the OEM fuel delivery system and does not require any additional power modifications and still allows the CTS-V to be driven on pump gas.
NOTE: due to the increase in boost DYNO TUNING + ECU Mapping is required.