i'm looking at getting 4:10 gears, is there any way i can recalibrate the spedo or change the spedo gear in the trans for the new gears?

 

What year car are we talking about?? Is it an auto or manual trans??

 

program the pcm. if its a a4 you may want to change the shift points also. im use to the m6 so not sure about the shift points

 

94z lt1 6 speed

 

also, can i can the first gear in the trans to reduce wheel spin, or should i just start off in 2nd?

will i have to worry about it with a fairly stock motor?

so far, i've got a 3" flowmaster, ditching cat shortly, plan to rip the emissions off as well. k&n filter, i'm fabing a cold air intake shortly.

gearing up for a 10-12lbs supercharger in the near future. thinking of going with a centerforce dual friction for clutch.
not sure how long it will last under 500 hp.

 

Since your car is an M6 SLP sells a Speedo Calibration box to correct your Speedo.

 

Don't use the SLP speedo recalibrator on a 94. Go to PCMforless.com and get them to reprogram your car. It costs less and he can also improve your cars performance. Since he doesn't seem to have many mods I don't think he'll see any HP gains though.

 

so if it's just a matter of reprogramming can't i get the software program to interface and change it myself?

 

Yes, a lot of people do that. There's Tunercat which is popular and there's some power programmers as well. I have a '93 that uses a chip so I don't know much about it.