Need Answers Before Getting 3.73s

[NOS2006]

I'm going to end up getting a 3.73 rear-end set-up with an LSD, but I don't know if I will need to take precautionary steps to aid the engine/transmission. Will I need to add anything to the car before the gears? Will I need to recalibrate the speedometer?

[01MaroIL]

i believe you will have to recalibrate the speedo

[99v6cam]

well... You don't HAVE to... I'd recommend it though...

[Dominic]

the engine/tranny shoudl do fine with 3.73s.

[NOS2006]

Is there any type of program I could just buy to recalibrate it myself? Maybe even tune it too? It's a '98.

[Tru2Chevy]

HPTuners :D

- Justin

[jessica2112]

I heard with 3:73's your first gear is so short it's almost useless. Is that true?

[1DangerousV6]

you will need to recalibrate the speedometer in order to keep your shift speeds right and also to not hit the speed limiter..unless its a manual..then you'd just want to recalibrate the speedometer..also if you are going from a 2 series differential to a 3 series you will need to get a 3 series ABS reluctor ring in order to keep your ABS operational (if you have ABS)..you can get one from www.slponline.com for about $20

[xX315Xx]

jessica-
I will let you know in a few hours, my gears are getting installed as we speak.

[Tru2Chevy]

Originally posted by jessica2112:
I heard with 3:73's your first gear is so short it's almost useless. Is that true?

LittleG has 4.10's with the M5 (3.75:1 first gear) and at full throttle, first is good for just over 60' [img]smile.gif[/img]

- Justin

[Red]

remember to let em break in a lil bit before you floor it.

[1998silverbird]

Originally posted by jessica2112:
I heard with 3:73's your first gear is so short it's almost useless. Is that true?

Not true.. 3.73's are the $hit.. Still got 32mpg on the highway with my stock motor..

[NOS2006]

One more question... what all am I buying?

LSD
3.73 gears
Ring spacer
Cover

Do I need an install kit or anything else?

[01MaroIL]

gear install kit i think

[xX315Xx]

if i granny it, i'm shifting at about 20 mph with my 5 speed. So to answer your question, yes i still use first gear.

For the full install you will need
gears
lsd
cover
install kit
gear lube
limited slip addative (if needed)
and the reluctor ring