What is the name of the FTL drive the goa'uld use that rivals hyper drive in its speed. Is it a completely different drive, or just a modified hyper drive.
The wikia, at least, seems to make little distinction between the drives on the various Motherships and Ha'tak. The tech seems to be crossover.
Hyperdrives are complimented by Inertial Dampeners because travel at such high speeds would cause instantaneous death due to the sudden acceleration.
All Goa'uld vessels are equipped with inertial dampeners. They are effective at any speeds, but cannot completely compensate for the activation or deactivation of the hyperdrive, causing the unprepared to be thrown across the room with a mild amount of force. (SG1: "Within the Serpent's Grasp")
I'm not sure how reliable this wikia is, but it does cite sources at the bottom of their pages referencing shows, RPG's and such. Example.