Civic EG

Does anyone have any info on JDM d series gearbox ratios???

Say i have a JDM d15B carburetted motor & gearbox, the gearbox having a A000 casting mark, marked as an s20.

What would the gear ratios be?

im not 100 percent on gear ratios but if im not mistaken the A000 is the dx/cx/vx? tranny with longer gears for better milage, and the B000 is the EX/SI tranny for better acceleration, you might have to pull the final drive gear and count the teeth to figure it out unless you know what model and year it came from, personally i have a JDM d15b mated up with SI/EX tranny hope this helps