Description
A Calibrated Power kit that converts the early Allison 1000 5-speed to 6-speed operation, adding a second overdrive for lower highway rpm, with transmission tuning for your truck.
- New valve body, wiring harness and solenoids
- Custom TCM tuning for your truck included
- Double overdrive gives about 14% lower cruise rpm
- Works with high idle and tap shift retrofits
A refundable core charge applies; see the Core Charge option. The included tuning is transmission (TCM) tuning only.
Fits: 2001-2005 Chevrolet/GMC 6.6L Duramax LB7/LLY with Allison 1000 5-speed
