4.10 Gears???

[freakstatus]

Hi guys, I know this may be an old and tired subject but I need some tips on this one. Apart from increased torque and blowing people away off the line are there any other benefits to going with 4.10's apart from the original 3.55's? I'm a pretty casual driver that likes to cruise and hit the gas once in awhile. Don't really plan to race. Any advice would be great!

[sailsmen]

I would start w/ a tune and see how that works.

[cyclopsram]

The 4.10s help your accelleration, from a dead stop and in passing situations, they cause the engine to run a little faster all the time, and you as a casual user will probably never reap any benefit from having them...The change from 3.56 to 4.10 is not that great anyway. I would go with the tune suggestion as you will feel that in the seat of your pants as well..

[FastMerc]

I have done the tune 1st and it is a good way to go, but I am going to install 4:10s next month with a full dyno tune.The car will be more fun! :)

[Jon01]

In theory they'd make life easier on the trans, since they would multiply what's coming back more than the 3.55's allowing it to accelerate 'easier'.

[KillJoy]

You will need a Tune to recalibrate for the new gears .

So.... Get a Tune FIRST, then Gears ;)

KillJoy

[Stranger in the Black Sedan]

You don't need the 4.10s if you don't need to eek the extra acceleration out. Plus you run the risk of the 4.10s being noisier than stock gears. Although some people get lucky and get a magic set of 4.10s, the Ford Motorsports and other aftermarket gears are not finished to same degree that OEM gears are.

Plus there are a bunch of posts on this board about how you will move the safe top speed of your Marauder down significantly because the driveshaft critical speed will be reached at a lower road speed w/ 4.10s than 3.55s.

I'd keep the stock gears for what you are doing.

[freakstatus]

You don't need the 4.10s if you don't need to eek the extra acceleration out. Plus you run the risk of the 4.10s being noisier than stock gears. Although some people get lucky and get a magic set of 4.10s, the Ford Motorsports and other aftermarket gears are not finished to same degree that OEM gears are.

Plus there are a bunch of posts on this board about how you will move the safe top speed of your Marauder down significantly because the driveshaft critical speed will be reached at a lower road speed w/ 4.10s than 3.55s.

I'd keep the stock gears for what you are doing.

Thanks for the info! Thats what I thought but just wanted to be sure...

[RF Overlord]

Plus you run the risk of the 4.10s being noisier than stock gears. Although some people get lucky and get a magic set of 4.10s, the Ford Motorsports and other aftermarket gears are not finished to same degree that OEM gears are.I and many other here have installed FMS 4.10s with no noise issues at all...I wouldn't think we ALL got a "magic set".
Plus there are a bunch of posts on this board about how you will move the safe top speed of your Marauder down significantly because the driveshaft critical speed will be reached at a lower road speed w/ 4.10s than 3.55s.Bear in mind that the new lower safe top speed is still well above any legal speed limit. If you have the need to go that fast, then just install the AMMC driveshaft.

[fastblackmerc]

I too have had no noise or any other issues with the FMS gears sets. In fact when my FMS 4.10's were installed, no shims had to be added or deleted and they've been just as quiet as the factory gears from day one. Going with 4.10 will add about 200RPM at speed and you'll get 1-2MPG less, but the puch out of the hole is worth it! :burnout:

You will need a tune to recalibrate your speedo.

[cyclopsram]

The skill of the installer is a good part of the equation when setting gear lash.

[superford3]

if your not going to race it ,dont bother

[fastcar]

If you want a good blow by blow on the effect of various low dollar mods to the MM, search my threads under 'progress report'. "#4 progress report" details my experience with the FMS 4.10 gearset.

My understanding is that Richmond gears are noisy, and others, too, esp. if not installed just perfectly. FMS have the reputation of being excellent, oem quiet, when installed by a reputable, experienced mechanic.

Mine are even quieter than before, because my side bearing were starting to make some noise.

Obviously you are asking about this, because you feel like doing something for the car. No, you aren't racing, but you feel you'd like some improvement. I can't say enough for the increase in driveability with the 4.10 gears. I just love them. If I could do it again, I would even consider 4.30s. If I didn't do a lot of highway driving, I would go with 4.56s.

The car is just so much more fun to drive. It blasts off from a start, without even trying now. It passes SO MUCH EASIER now, without always having to downshift, and rev the snot out of the motor. I really like that...

The top speed is already governed at 120. It's very unlikely you will have vibration at that speed with 4.10s. If it's a problem, use the aluminum driveshaft.

Truthfully, however, you may want to try a tune, first. They are so easy to install yourself, and will give you a lot of improvement, too. If you like it a lot, and want even more, then gears would be a super next choice. My 2 cents.

fastcar:burnout:

[1stMerc]

if your not going to race it ,dont bother

Still gotta be able to keep up with you guys when you feel the urge to mash it. :burnout::eek:

[MM_BKK]

Hi guys, I know this may be an old and tired subject but I need some tips on this one. Apart from increased torque and blowing people away off the line are there any other benefits to going with 4.10's apart from the original 3.55's? I'm a pretty casual driver that likes to cruise and hit the gas once in awhile. Don't really plan to race. Any advice would be great!

If you're NOT into the "increased torque and blowing people away off the line", then DON'T do the 4.10 gears.
If you DON'T plan to "hit the gas once in a while". Don't do the gears.
If you DON'T plan to cruise at 120+ MPH, but you want to get there quick. Definitely DO the gears!

If you decide to do the gears and tune to go with it, you'd swear that you're driving a different car (in a good way).
You will be asking yourself, why did I waited so long to do these mods!


You don't need the 4.10s if you don't need to eek the extra acceleration out. Plus you run the risk of the 4.10s being noisier than stock gears. Although some people get lucky and get a magic set of 4.10s, the Ford Motorsports and other aftermarket gears are not finished to same degree that OEM gears are.

Plus there are a bunch of posts on this board about how you will move the safe top speed of your Marauder down significantly because the driveshaft critical speed will be reached at a lower road speed w/ 4.10s than 3.55s.

I guess I must of gotten a set of "magic" Motive 4.10 gears, because there's no noise.
I had a local mechanic that have done hundreds of Ford 8.8 rears installed my set. He nailed it the first time. $250 well spent!