its a 91 si with a d16a6 but im not sure what tranny i have is there any
way to tell the diffrence between dx,si,hf

 

You have a Si with the stock engine...Do you have any reason to believe the tranny is anything other then stock?

Use this tool: http://crx.honda-perf.org/math/index.html

Choose a transmission, gear and speed...then take your car out and do the same. If the rpms match, that's what tranny you have.

 

60mph = 3,000rpm = Si tranny.

 

thanks ill do that no numbers i guess