jagman454

so i have a 1990 GT and i was wondering is the upgrade to 4.10's really all that great? And if you have installed them before can you tell me the do's and dont's? thanks for the comments

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PRO50SC

Auto, yes, stick, 3.73's!!

RawGtPower

Dont do it yourself unless your familiar with the rearend internals and how to set up a dial indicator guage

gspfunk

Pay to have it done....it's not something you want to make a learning experience.

tinman

One more time........

ncksnapper

i have 4.10s on my 5spd 5.0 89, my friend has them in his 90 5 spd supercharged 5.0 and my other buddy has them in his 04 gt supercharged and we all love them , just like the other guy said 3.73s are usually what u would want but really its a matter of opinion everyone here will have a different opinion about them but its a big difference with the 4.10s and if u do any gears dont forget your speedo gear! lol

88BlueGT

If its an auto I would go with 4.10's without a doubt but if its a manual its a personal preference... I would still go with 4.10's but some people prefer 3.73's... some even 3.55's. Also, like everyone said. Its a diffifult install and there are lots of tools that you will need that you most likely will not have. Its a job best left to the professionals. 95% of people on here will not install their own gears... thats a fact.

ncksnapper

yeah 88bluegt is right i installed mine, im a professional mechanic, and my shop just happens to have the tools to do it, its a pain in the *** cause if its not done right you will get noise and premature failure