3.27, 3.55, or 3.73?!!

[03p71]

Im planning on changing my final drive gears when i do my limited slip... but i dont know which will give me better performance without completely killing my MPG. 3.27, 3.55, or 3.73? Please help...

[slickster]

at leats 3.73 4.10 only takes off 1 or 2 mpg tops

[03p71]

I think stock ive got 3.27 and i gotta admit i would like a little bit more kick out of the hole. so the 3.73 would wake that car up than?

[fastblackmerc]

I think stock ive got 3.27 and i gotta admit i would like a little bit more kick out of the hole. so the 3.73 would wake that car up than?

3.73's would be a good improvement over the stock 3.27's and you'd lose about 1MPG. If you went from 3.73's to 4.10's you'll lose about 2MPG.

[03p71]

3.73's would be a good improvement over the stock 3.27's and you'd lose about 1MPG. If you went from 3.73's to 4.10's you'll lose about 2MPG.

What would that put at rev's wise? cause im turnin about 2300 right now with the 3.27s

[Go2GuyFL]

What kind of roads do you primarily drive and at what speeds? 95% of my driving is Florida highway 70 plus, so I've stayed with 3.55 as well as changing my F-350 from 4.10 to 3.55.

[LANDY]

What would that put at rev's wise? cause im turnin about 2300 right now with the 3.27s it depends on the size tires you have out back,
26 or 28" tires?

[03p71]

Most of my driving is on the Florida turnpike and I75/I4. Usually im doin 80mph at 2300rpm and ive been pretty happy with the hwy gas mileage

[fastblackmerc]

What would that put at rev's wise? cause im turnin about 2300 right now with the 3.27s

3.27 to 3.73 about 200RPM higher at speed.

3.27 to 4.10 about 400RPM higher at speed.

[03p71]

it depends on the size tires you have out back,
26 or 28" tires?

All i know is that there 235/55 R17

[Marauderman]

Most of my driving is on the Florida turnpike and I75/I4. Usually im doin 80mph at 2300rpm and ive been pretty happy with the hwy gas mileage

:confused: You say you want some better get up but then say you drive it daily mostly on the interstate, getting good mileage and happy with it.....................well... ........moving on up in gears will do the same reverse in mileage ----so which do you want---seems to me if you do alot of interstate daily driving ---I'd stay where you are...........my 2 cents...

[RF Overlord]

Keep in mind the CV and the MM do not have the same motor or the same size wheels. The 2V motor has more of its torque lower in the power band than the MM and has 17" wheels. 3.73s on a CV are like 4.10s on a MM. The CVPI had 3.55s for one or two years, then Ford when back to 3.27s, in part because of the MPG hit on the highway, so you'll need to decide which is more important for you, performance or mileage.

[Chevyguy]

All i know is that there 235/55 R17

Those are 27.1" tall or so

3.73 gears if you are going to swap gears.

If you find a nice low mile stock full rear assy 3.55 with Trac loc you could swap that in.

[Joe Walsh]

Keep in mind the CV and the MM do not have the same motor or the same size wheels.
The 2V motor has more of its torque lower in the power band than the MM and has 17" wheels. 3.73s on a CV are like 4.10s on a MM. The CVPI had 3.55s for one or two years, then Ford when back to 3.27s, in part because of the MPG hit on the highway, so you'll need to decide which is more important for you, performance or mileage.

+1!
The 2V SOHCs don't like to rev like the4V DOHCs, I'd use 3.55s if you are cruising fast on the highway a lot.

[03p71]

Ok. im leaning more towards the 3.55's now that i have a better idea of the outcome. thanks everyone its been a huge help.