How to find the right Automotive Performance Transmission Shift Kits AI guide

Written by an AI model from its trained knowledge.

What the AI looks for in Automotive Performance Transmission Shift Kits

Street vs race calibration: Choose the kit's street or towing stage for daily drivers. Reserve race or manual-valve-body stages for dedicated performance use. Race calibrations make shifts harsh, can delete automatic upshifts and increase driveline shock.
Transmission and control type: Hydraulic or TV-cable transmissions use valve body and spring kits. Electronically controlled units rely on tuning, sometimes together with a valve body kit. On electronic transmissions, a hydraulic kit without matching tuning can clash with the computer's pressure control.
Throttle valve or modulator setup: Set the TV cable or vacuum modulator correctly before and after installing the kit. Misadjusted TV pressure causes the soft, slipping shifts a kit is blamed for, and it can burn clutches.
Unit condition: Install on a healthy transmission and fix slipping first. A shift kit firms shifts and shortens overlap, but it won't repair worn frictions or leaking seals.
Install complexity: Check whether the kit needs drilling, separator plate changes or a pan-off-only install, and match it to your skills. Errors in drilled-orifice kits are hard to reverse and can cause shift problems.

TransGo: Long-established shift kits for GM, Ford and Mopar automatics, from mild to firm.
B&M: Shift Improver kits for classic and popular automatics.
TCI: Shift kits and valve bodies for performance builds.
Sonnax: Valve body repair and performance components used by rebuilders.
Hughes Performance: Valve bodies and shift components for drag and street performance.

No. It shortens shift overlap and firms engagement, which reduces slippage and heat. It does not add power.