Generally speaking, Pontiac used a drive gear containing 16 or 18 teeth in its Turbo 350 and 400 transmissions, while the driven-gear tooth count ranged from 36 to 45 depending upon the application.

Some great tech info comes our way from the frequently asked questions manufacturers receive. Recently we got this gem from Classic Instruments, maybe now we'll fix that Turbo 350 that dribbles ...