changed gears/mph is way off

**crazycat** · 07-31-2006, 03:09 PM

Hi I installed 4.10 gears , now my mph is way off. I know the older cars you could change the little gear on the transmission. this car is electronic, what is the best way to fix this. I have a 95 z28. thanks p.s I called jegs he said I would have to go to a transmission shop.....

**RATA5.7** · 07-31-2006, 04:44 PM

What you can do is go to jegs or summit racing and buy a programmer and you will be able to custom tune your ocm for 4.10's.

**RATA5.7** · 07-31-2006, 04:45 PM

pcm not ocm

**crazycat** · 07-31-2006, 05:20 PM

Ok will do. thanks....

**cobrahunter** · 08-05-2006, 01:00 AM

My speedo was off by about 10mph after I installed the 4.10s.

**preston1980** · 08-05-2006, 01:54 AM

hypertech power programmer 3

It will fix your speedo, plus give you more horsepower and much more for around 300$ on all f-body cars from 94-02
They just plug in under your steering wheel, its easy

WS6store.com, for all your LS1/LT1 needs, they rock