4.56 gear install

[Kyle M.]

I am going to buy some new gears and I have decided on 4.56 gears. I have a 93 etxtended cab, 4.0l 5 speed. I just recently put some 33X12.5 tires on it and with the stock 3.27 gears, I am less than satified.

Anyway, with installing these gears, is there anything I should know? Any special items I will need to get for these gears? I have heard mixed answers on this, some like I will need a new carrier, or cross pin, ect. I have a trac loc in the rear (8.8), and a stock d35 open front end. Will this be a straight forward install?

Thanks

 

[Sunk]

You should grind of the back edge of one tooth on the ring gear instead of getting a notched crosspin. The pinion gear does not contact this area so it won't weaken it, and the notched crosspins are much weaker.

 

[Kyle M.]

I wouldn't have to grind much?

I have a couple cross pins around I could clear myself also. $40 sounds a little pricey for a new one.

 

[metalmacguyver]

You will not need a new carrier.

 

[Sunk]

No you just grind the very corner off one tooth. It's much work than it would be too grind the entire length of a crosspin, and like I said, much stronger.

 

[Kyle M.]

Alright, sounds good, thanks


What brand gears should I go with, Yukon?

 

[rangerbum]

33's with 3.27 gears

 

[Kyle M.]

yeah, it a dog right now....Glad I have 4 low for the trails

 

[rangerbum]

I felt that same pain last spring. I put 31's on mine with a 2.3, 5spd, and 2.45 gearing. It wasnt any good at all lol. It looked sick though, but thats useless for what I wanted.

 

[BeaterMan]

also be sure to measure the rotational torque with an inch pound torque wrench. this is very crutial to set the pinion bearing preload.

 

[AzureMach1]

stay with ford gears or atleast that what they say for mustangs

 

[Kyle M.]

Alright, getting ready to order my gears, I am going with 4.56 gears Yukon brand.... CAN'T WAIT!!! Gonna rebuild my trac lock in the rear and I have been thinking about locking the front diff while I'm in there.....we will see on that. 300 for a locker might blow the budget.

I have another question...I was looking on other threads and I saw people using a case spreader on the front d35 while installing the gears...do i need this or does it just make it easier? I can make one if I need one, so it isn't a big deal, I just want to know before hand.

Thanks

 

[Sasquatch_Ryda]

stay with ford gears or atleast that what they say for mustangs

You realize that Ford gear sets are made by other manufacturers right? Motive Gear makes them I beleive.