4:10's????
- Thread starter 60sec_assassin
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BillyGman
New member
Well now that's a bit puzzling I must say. I just don't understand why the tech guy at Richmond has told me that. Oh well, I guess it's nothing that I have to worry about anyway, since I went with Ford gears, and my 4.56's don't make any noise either. Nor did my 4.10's when I had those in the Marauder.Rider90 said:
W
WantOneSoBad
Guest
Can gear ratio's go any higher than 4.56 and if so why don't more of you have them. I am guessing that they don't though since I've spent hours on end looking at all the threads on this board and haven't seen any yet.
GodOSpeed
New member
I've been 125 shift and 145 in mine also. With 4:10s. As far as 4:56s and up I think there would be an issue with pin and ring gear clearance. If a person wanted that low of gear I would suggest 4:30s and try going down with tire and rim sizes. I think 3" down = one gear change. Now that would be a gas guzzler and top end killer. But damn decent in the quarter or 1/8mile. :burnout:
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WantOneSoBad
Guest
Okay, so basically what you're saying is that 4.56's on up would be bad ass 0-60 and 1/4 mile MM's but would give up lots of MPG and engine/transmission life since the car would be running at such high RPM's most of the time.
P.S. Thanks for that side note FordNut at the end of your post, shows you how much I know.
P.S. Thanks for that side note FordNut at the end of your post, shows you how much I know.
AzMarauder
Senior Member
Just for the sake of discussion... it isn't as simple as you might think.Rider90 said:
Many cars with overdrives or such will achieve their highest top speed in a lower gear. Certainly gas mileage might be lowered... as you are turning higher RPMS. But if you are talking about lowering the car's top speed.... chances are the car needs the mechanical advantage offered by the lower gears to achieve its topspeed.
So you might find that the Marauder would actually go faster in 3rd gear than in OD.. because it can better apply the available horsepower. The same might be true if you have 4.10s vice the 3.55s.
AzMarauder
Senior Member
The only 4.10 geared MM I've seen belonged to CruzTaker....marauderman said:
I gave him a ride in my '03 Cobra... from Cleveland to Vermont....
I gave him a ride in my '03 MM .... from Vermont back to Cleveland....
Think I've been for a ride in a 4.10 geared MM....
NOPE !
:depress:
AzMarauder
Senior Member
Depends on the car and application....WantOneSoBad said:
5.13s used to be a very popular drag gear .....
I wouldn't want to do more than 4.56s on the street tho. Had them in my '69 Camaro SS years ago. Was like driving a diesel truck. With the 396CUI up front... I could start in 3rd or 2nd depending on grade.... never needed 1st unless I was racing.
BillyGman
New member
you'll give up some top end with 4.56 gears, but not a whole lot for street driving, and only for some real crazy street drving at that. With the 4.56's you'll begin to notice aloss of acceleration as comared to the 4.10 gear ratio once you go over 100MPH. my car still pulls very hard after 100 MPH, but that's only because it has the Supercharger on it.
I had 3.55's, then 4.10's, and now 4.56's in my Marauder, and I received a 2 MPG fuel econamy loss going from the 3.55's to the 4.10's, and then another 2 MPG loss going from the 4.10's to the 4.56's. I get the best quartermile 60' times and ET's at the dragstrip with the 4.56's, but the 4.10's were the best overall compromise for the street. but again, that's if you're into driving beserk on the highway. other than the loss of the gas mileage, and the top end loss over 100 MPH, a Marauder with 4.56's in the rear still only revs at 2,700 RPM's on the highway in overdrive while cruising at 70 MPH. So with the tall 18" tires, and the O/D transmission the 4.56's aren't as bad on the street as most people think. if the car didn't have a transmission with overdrive like it does, then i wouldn't even think about puting 4.10's in the rear let alone 4.56's.
I had 3.55's, then 4.10's, and now 4.56's in my Marauder, and I received a 2 MPG fuel econamy loss going from the 3.55's to the 4.10's, and then another 2 MPG loss going from the 4.10's to the 4.56's. I get the best quartermile 60' times and ET's at the dragstrip with the 4.56's, but the 4.10's were the best overall compromise for the street. but again, that's if you're into driving beserk on the highway. other than the loss of the gas mileage, and the top end loss over 100 MPH, a Marauder with 4.56's in the rear still only revs at 2,700 RPM's on the highway in overdrive while cruising at 70 MPH. So with the tall 18" tires, and the O/D transmission the 4.56's aren't as bad on the street as most people think. if the car didn't have a transmission with overdrive like it does, then i wouldn't even think about puting 4.10's in the rear let alone 4.56's.
BillyGman
New member
Yep....there are 4.88's and 5.13's available for the Marauder rear (Ford 8.8) however, based on my experience on the street and at the dragstrip with the 4.10's as well as with the 4.56's in my Marauder, I don't belive there would be any benefot at all from choosing anything more extreme than the 4.56's even for the dragstrip unless you want to run the car in the 1/8th mile strip only. And who wants that? With 5.13's in a Marauder, you'll be reving at 3,000 RPM's on the highway at 70 MPH, and that's in overdrive.Warpath said:
BillyGman
New member
Once you go with the 4.56's or taller(numericly higher), you have to use a cross shaft pin that has a step ground into it for clearence of the ring gear teeth. That's what I had to do.GodOSpeed said:
Richmond gear sells a special pin that can be used for $34 which is what I did. I bought it from www.summitracing.com The aggrivating thing for me was that Fordracing doesn't even inform their customers that with the 4.56, 4.88, and 5.13 gears that they sell, a speacial cross shaft pin is needed. Instead, they let you find it out the hasrd way once you have the gear installation almost complated, and you realize that you'll have to remove the ring gear and carrier all over again, because the stock pin won't slide out past the ring gear teeth in order for you to slide the axles back in.
Last time I looked, the Ford Motorsports catalogue didn't even have an asterisk with a footnote despite the fact that I had called them to request that they do that over a year ago. Their answer was that I should grind down the corners of all the teeth on the ring gear in order to slide the stock pin out!!! Yeah right. Obviously the catalogue department doesn't care about their customers.
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You should go with installing Ford Motorsport 4:10 gears. This is what the car should have been built with at the factory. Off the line acceleration is greatly improved and there is still enough engine to give a WOT punch at 70 mph. Your best bet for an install would be a FLM dealer ship or a reputable Mustang speedshop. I have them an have not experienced any significant drop in mpg...
BillyGman
New member
Yep, the same can be said about the 4.56 gears, however after having them in my Marauder for awhile now, I must tell you that although they're better for the quartermile, I think that the 4.10 gear ratio is the best compromise for the street (atleast for a Marauder).JohnnyB said:
NAVCHAP
Senior Member
Happy with 4:30s
Very happy with 4:30s, might have gone with 4:56s if doing it over again.
Really like the way the higher ratio frees up rpms. Easier to get into the boost.
Leaves unsuspecting CV & Roadmaster Cabbies in the lurch early each morning on the way to work, LOL.
Especially the ones who want to pass on the right at the lane drops. The best defense is a strong offense. Should have seen the grin on the alignment tech today when he road tested it, priceless. -kjs-
Very happy with 4:30s, might have gone with 4:56s if doing it over again.
Really like the way the higher ratio frees up rpms. Easier to get into the boost.
Leaves unsuspecting CV & Roadmaster Cabbies in the lurch early each morning on the way to work, LOL.
Especially the ones who want to pass on the right at the lane drops. The best defense is a strong offense. Should have seen the grin on the alignment tech today when he road tested it, priceless. -kjs-