bighungrymatt

I would like to upgrade the gears on the rearend of my 87 V8 5.0 5speed. My friend was telling me to get 3.55 but the more I read, it seems people prefer 3.73. whats the difference and what do you guys prefer?

also, what is the difference between 8.8" rear and 7.5" rear?

LTnone

Just go 3.73...what year/engine Mustang do you have? If it's a v8 you have an 8.8

bighungrymatt

ok thanks

Sick5.0LX

I have 3.55's now.. but switching to 3.73s real soon...

Stevens91gt

go with 3.73's..you'll get more acceleration
and not that much of a difference with gas mileage

ih8chevy

373's ftw. u wont regret it.

BackInBlack90LX

well im not tryin to jack this thread but what about for me i dont want a straight line car i want to be able to take a mountain road also so what about for me 355 or 373

LTnone

Hoooold the phone...why are you making that switch? The difference is so negligible it's not nearly worth the money. Now if you're going to 4.10's it might be worth it, but 55-73 is a waste. BackInBlack, just go 3.73, you won't regret it

Sick5.0LX

We'll I'm going to rebuild my rearend anyways, so I thought I might as well do it. I have heard that there is a pretty big difference between the two, maybe Im wrong?

LesteR723

.3.73