GM Transmissions

Stage 1 This is our improved stock Allison.  It is designed for the stock truck .  It has all the latest updates and will give you years of trouble free service. $3500.00 Stage 3 I designed this transmission for every one that is running a tuner, or EFI live.  It is rated for 550 rear wheel horsepower.  This is not a kit slapped in a used transmission.  It has a...