Ford 3.73s or Motive 3.90s, Are motive gears OK?

[NicksBullitt]

My bullitt needs a set of gears. Question: to go same as most everybody else and get the 3.73s(Ford), or go with Motive Gear's 3.90s?

I have heard someone tell me not to get anything but ford gears. I was curious if anyone knows why this is? I like the higher ratio of the 3.90s, not quite as high as 4.10s and a little more than 3.73s.

Are Motive gears just not as good, harder to install, do they make more noise?

With the labor expense of installing gears I do not want to have to replace them EVER!

 

[Dark Knight GT]

I haven't heard anything bad about Motive Gear. As a matter of fact, there's a lot of guys on here who use them.

As for which gear ratio to choose, it depends. What are your future plans for your car ? If you're planning on going with a power adder in the future, then go with 3.73's. If you plan on staying n/a, then I'de say skip the 3.90's and go with 4.10's or 4.30's. Just my .02 cents.

 

[02mingreyGT]

Pro 5.0 makes 3.90s too ive heard nothing but good stuff bout those
This guy liked his

 

[Cobra Jay]

If you're planning on going with a power adder in the future, then go with 3.73's. If you plan on staying n/a, then I'de say skip the 3.90's and go with 4.10's or 4.30's. Just my .02 cents.

If you plan on staying N/A like I do, go with the 4.10's or 4.30's. I'm going with 4.10's. The difference between a 3.73 v.s a 3.90 and a 3.90 v.s. a 4.10 isn't that much. But between a 3.73 v.s. 4.10 and 4.30 is a lot diferent.

 

[stang74]

4:10's for the men
3:90's for the boys
3:73's for the women
3:55's for the girls

 

[BLUE03GT]

i resent that! 3.90's for MEN that drive a lot of highway

and to answer the question ... YES!...Motive gears are good.. supposedly as strong as FRPP if not stronger... there is no whine..they feel great...im as glad as can be

 

[ZIPP0]

4:10's for the men
3:90's for the boys
3:73's for the women
3:55's for the girls

Exactly!

Have you ever driven a car with gears?
3.90's or 3.73's would be fine for a supercharged/nitrous'd car...

But com'on dude, 3.73/3.90 on a naturally aspiratted car?

 

[BlackenedSVT]

3.90's are made of a softer metal, and don't last as long. Go with FRPP 3.73 or 4.10 or 4.30 NOT 3.90's.

 

[BLUE03GT]

dood just because FORD doesnt make 3.90's doesnt mean that they are crap... gears are gears.. Motive gears are supposed to be stronger if anything...who told you it was made of softer metal? FORD? hahahaha

oh and btw Ford is supposedly making STRONGER gears soon... maybe Ford is the one with the weaker gears

 

[jas142]

I'm considering 3.90s because of the rash of people with 4.10s who get WORSE 1/4 mile times. It seems that if you don't have drag radials or slicks, 4.10s aren't gonna help.

 

[SonicBlueBabe]

4:10's for the men
3:90's for the boys
3:73's for the women
3:55's for the girls

 

[wms004]

I'm considering 3.90s because of the rash of people with 4.10s who get WORSE 1/4 mile times. It seems that if you don't have drag radials or slicks, 4.10s aren't gonna help.

good point.. I have trouble enough hooking up with 3.73's.. given i have 18's now but even before it was almost equally as tough. I have some spin at launch when i launch correctly.. then 1st - 2nd i break loose.. then 2nd - 3rd I break loose a little too.. So if you don't have some really sticky tires, control arms, and skills, 4.10's can screw you over. I'm having LCA's put on tomorrow to help with the problem.

Not flaming 4.10's cuz i know for a fact they are fun as all get out and with the right combo will beat 3.73's at the track, but...
As for the guy with the 3.73's are for women comment.. You seem a little insecure and may be compensating for something standing behind your 4.10's so ruthelessly

Everyone has different uses for their car. If I didn't drive on the highway as much as i did, i would have gotten 4.10s.. but there's no way i'm gonna be on the highway at 3,500 RPM for 6 hours going to school. 3.73's work how I want for my uses. I don't criticize you for 4.10's, so all the 4.10 people need to be comfortable with themselves and accept that 3.73's and 3.90's are what some people want.. Go ahead and make fun of the 3.55 people that wasted their money tho, heh.

-wade

 

[Dark Knight GT]

I'm considering 3.90s because of the rash of people with 4.10s who get WORSE 1/4 mile times. It seems that if you don't have drag radials or slicks, 4.10s aren't gonna help.

Do you really think you're going to get better traction at the track with 3.90's compared to 4.10's ? If you think you're going to grip good traction at the track on a street tire with anything steeper than stock, you're sadly mistaken. As a matter of fact, many people have a problem getting traction with stock 3.27's at the track due to how slick the surface at the track is. This is why I tell people if you plan on racing at the track, its best to buy a spare set of wheels, throw some drag radials or slicks on them, and just bolt them on when you go to the track.

If I didn't drive on the highway as much as i did, i would have gotten 4.10s.. but there's no way i'm gonna be on the highway at 3,500 RPM for 6 hours going to school.

The rpm difference between 4.10's and 3.73's is very small.

Accordingly to a gear calculator I have access to, with 3.73's in 4r70w automatic on a 26in tire, you should be turning 2,362rpms@70mph in o/d. With 4.10 gears in o/d with the same tire diameter size, you would be turning approx. 2,597rpms@70mph. Thats only a 235rpm approx. difference in cruising rpms.

I'm not trying to tear up what you said but I don't see where you get you're crusing rpms would be 3,500rpms with 4.10's and where 3.73's offer that much better of cruising rpms.

 

[Defleshed]

you'd not be wise to get anything other than 4.10s!

 

[Cobra Jay]

3.90's are made of a softer metal, and don't last as long. Go with FRPP 3.73 or 4.10 or 4.30 NOT 3.90's.

Reguardless of what gear ratio and what type of steel is used, ALL gears are heat treated. How long they will last depends on if they are properly installed.

 

[StngStr]

Anyone who gets a higher gear (lower numerical) because they are worried about traction is a sissy. Learn to drive.

With stock gears my best 60 ft was 2.0. First time out on 4.10's cut consistent 2.0's.

There are quite a few folks cutting 1.9's and even 1.8's on street tires (not drag radials) with 4.10's.

Basically:

power adder = 3.73's
N/A = 4.10's

Period. Don't believe me? USE THE DAMN SEARCH FEATURE. Amazing concept huh?

 

[decoy562]

Check www.mustangtuning.com they say that the motive gears are just as good as the Ford ones, and won't have gear whine like Richmond gears.

 

[wms004]

The rpm difference between 4.10's and 3.73's is very small.

Accordingly to a gear calculator I have access to, with 3.73's in 4r70w automatic on a 26in tire, you should be turning 2,362rpms@70mph in o/d. With 4.10 gears in o/d with the same tire diameter size, you would be turning approx. 2,597rpms@70mph. Thats only a 235rpm approx. difference in cruising rpms.

I'm not trying to tear up what you said but I don't see where you get you're crusing rpms would be 3,500rpms with 4.10's and where 3.73's offer that much better of cruising rpms.

I can't drive at 70mph for 6 hours.. So i'm at 80-85.. which puts me at 3,000 rpm with 3.73's.. i'm just saying even that pushes it with what I feel comfortable with.. anything over that and i'd be wondering how much wear I am doing to my motor.

 

[Dark Knight GT]

I can't drive at 70mph for 6 hours.. So i'm at 80-85.. which puts me at 3,000 rpm with 3.73's.. i'm just saying even that pushes it with what I feel comfortable with.. anything over that and i'd be wondering how much wear I am doing to my motor.

Well, I guess I see your point then. I wouldn't know what thats like cause around here, the highest speed limit I've seen is 60-65, in most areas 55. Supposing I go 10 over, the most I'll ever be cruising at is 75mph. However, I'm going to be having to drive out of state to go to the 1/4 mile drag strip and I'm sure I'll enounter some of those 75mph where I'll have to go faster with the traffic.

Anyhow, I wouldn't be so worried about cruising rpms. Remember, the motor is actually reving freely. It's not like your at 3k rpms with strong throttle or anything. There are many pick-up trucks that have low gears like 4.30's that cruise the interstate and highways at 3-4k rpms all the time and their motors will last to beyond 300,000 miles. I know our motors arent exactly "Heavy duty" truck motors, but you still get the basic idea.

 

[2002BLGT]

3.73s and NX wet kit would make your car alot more fun ....... I think every mustang should have a power adder and 410s arent it LOL