How much of a sacrifce are 3.73s vs 4.10s

Dern Humpus

Dern Humpus

Dedicated LVC Member
Joined
Dec 6, 2004
Messages
533
Reaction score
0
Location
Warrensburg, MO
Im looking to do a couple mods to my mark, but I do a lot of highway driving and really do not want to replace the driveshaft, so I am wondering how much I would be sacrificing by going with a 3.73 ratio rather than 4.10s. Mods would most likely just be the rear end, nitrous and supporting mods.
 
Dern Humpus said:
Mods would most likely just be the rear end, nitrous and supporting mods.
Click to expand...
I'd just get a Ford trac-loc pumpkin with the 3:73's already installed and call it a day. This way you get posi and a little taller gear to get up in the revs quicker. Plus you'll stay out of the secondaries which is key when cruising on the highway.
 
MonsterMark said:
I'd just get a Ford trac-loc pumpkin with the 3:73's already installed and call it a day. This way you get posi and a little taller gear to get up in the revs quicker. Plus you'll stay out of the secondaries which is key when cruising on the highway.
Click to expand...


:I
 
How much should a pumkin with the gears in it go for?Any links to find these? Thanks :steering
 
You can also use any trac loc from any 8.8 28 spline rear end and save some money. I personally think if you are going to go through the trouble of doing gears might as well get the 4.10 or 4.30.
 
Any idea how much I'll sacrafice in 1/4 mile performance? On nitrous/ NA? Rough estimates would be fine.
 
.1-.2 tenths probably NA. Nitrous depends on how much power you will be making you might not lose any performance.
 
95LSC32V said:
.1-.2 tenths probably NA. Nitrous depends on how much power you will be making you might not lose any performance.
Click to expand...


I have my 96 with 4.10's and I tell ya its perrfect for me, fun and safety. at 80mph I am just under 3k rpm, I don't want that going above 3k so I try to keep it under 80mph... who need to be doing over hat on the roads today? I've made it up to 130-140 with 4.10's so it can get up there. just go with them, you'lll be happy.
 
you will lose 1-2 MPG with 4.10's if mileage is a concern. I am going with 3.73's personally decent blend of off the line power but still has some top end.
 
BlackMark8Li said:
I have my 96 with 4.10's and I tell ya its perrfect for me, fun and safety. at 80mph I am just under 3k rpm, I don't want that going above 3k so I try to keep it under 80mph... who need to be doing over hat on the roads today? I've made it up to 130-140 with 4.10's so it can get up there. just go with them, you'lll be happy.
Click to expand...


Do you have an aftermarket driveshaft? That is one of the main things I am trying to stay away from.
 
You will need an aftermarket driveshaft with 4.10 gears. You maybe able to get away with a 93 1 piece driveshaft which you can find at the junkyard. You will need the 93 driveshaft for 3.73 also.
 
Hi I pick up a 3.73 rear end from max at 5 star is around $650.00. about a year ago
I have a 93 mark VIII, it has the one piece shaft. I had the car up to 90 very smooth!!, one thing I need is to get a chip, and I’m still looking around


Rick

267.jpeg


268.jpeg
 
You can get 28 spline T-Lok rears on Ebay cheaply all the time as well as gears. Rebuild kits are cheap as well. I am replacing the rear on my Mustang with a Powertrax locker, the stock T-Lok will be rebuilt and go into the Mark along with gears.
 
You can also get Motive 3.90 gears which are a good comprimise.
 
95LSC32V said:
You can also get Motive 3.90 gears which are a good comprimise.
Click to expand...

Hmm, does anyone actually know if these will work properly ?

I would be very interested in 3.90's because I don't want to go for the bad boy 4.10's. :feedback
 
Every mark 8 owner that I know that went with 3.73's said they should have gone with 4.10's. Every mark 8 owner that I know (including me) that has 4.10's loves them. I figure that if you are going to spend the money for gears, do it right the first time and go with 4.10's.
 
crash said:
Every mark 8 owner that I know that went with 3.73's said they should have gone with 4.10's. Every mark 8 owner that I know (including me) that has 4.10's loves them. I figure that if you are going to spend the money for gears, do it right the first time and go with 4.10's.
Click to expand...

I totaly agree, I might just throw in the 4.10's and be done with it. Yea, that's my final decision. It will be done within the next month.
:Beer
 
StraDog said:
I totaly agree, I might just throw in the 4.10's and be done with it. Yea, that's my final decision. It will be done within the next month.
:Beer
Click to expand...



Good. Your talking a few hundred rpm difference between the two. I have 4.10's in the 95, and would NEVER trade them for anything else. BTW, your gonna need a different driveshaft either way. :)
 
94m5 said:
Good. Your talking a few hundred rpm difference between the two. I have 4.10's in the 95, and would NEVER trade them for anything else. BTW, your gonna need a different driveshaft either way. :)
Click to expand...

That's what I'm scared of... the expensive driveshaft ! I'm going to try and put em in and not worry about a driveshaft for a while.. I drive at 90 mph fine with no vibrations. I hope I don't have to invest in a driveshaft right away.. but I would definently get one later.
 
StraDog said:
That's what I'm scared of... the expensive driveshaft ! I'm going to try and put em in and not worry about a driveshaft for a while.. I drive at 90 mph fine with no vibrations. I hope I don't have to invest in a driveshaft right away.. but I would definently get one later.
Click to expand...

I don't think it is the vibration you are going to have to worry about. With all that additional torque being transferred I don't think it will last long structurally.
 
You must log in or register to reply here.

Members online

No members online now.
Total: 254 (members: 0, guests: 254)
Back
Top