Question regarding 4.56 gears

[LSUpete]

I'm going to upgrade to 4.56 gears and need some suggestions on where to purchase from and what product manufacturer I should choose.

 

[gotdads68]

I've always had good luck with Randys www.ringpinion.com but some of the vendors sell sets too.

 

[Greg_B]

I have Yukon gears and axles in mine. I got them from Mike Kirkus who used to be on this site a lot. Not sure if he is still in business. Nice guy...

I loved the 4:56 gears when I actually did a little wheeling... now that I just basically goof around going to the shooting range or a few dirt roads I kind of wish I had 4:11s.

Greg

 

[gotdads68]

I loved the 4:56 gears when I actually did a little wheeling... now that I just basically goof around going to the shooting range or a few dirt roads I kind of wish I had 4:11s.

Greg

Yeah, me too. Wish I could swap someone 4.11s for my 4.56s with the type of wheeling I plan on doing now. ;D

 

[Tiko433]

can y'all expand more on why y'all not happy with the 4:56s . I was leaning on going with them .

 

[gotdads68]

It's not that I'm unhappy with them, when I installed them I had a 289, a toploader with a tall first gear and 35s, it would wind out at fwy speeds. Now I'm building a 393 in front of a ZF5 and don't feel like I'll use the deeper gears as much. Just a different mindset is all.

 

[sykanr0ng]

You need to consider gearing and tire size.

Too far one way and your engine is running at screaming high RPM, too far the other way and no power to move in top gear on the highway.

 

[AxlesUp]

my personal preference:

3.73 with 33s
4.10 with 35s
4.56 with 37s

that's with a healthy (300hp) v8 and a non-overdrive trans.

 

[Skiddy]

I like 4.56 with my C4 and 35's.
Yukon gears haven't any issues with them, where to buy? whoever is cheaper;D

 

[77RHINO]

I will be replacing my Motive 4.56s, they apparently were a defect part but because of the time between purchase and install, there was no warranty period left. They "work", but are incredibly loud, making earplugs a necessity for any speeds over 40 MPH. Diff has been pulled 3 times, with no fix. Separate mechanics both claimed bad gearset. My front gearset is waiting to be installed, but I'm not as concerned with that set being loud as I am the rear. I will be purchasing Yukons.

I currently have nv3550 and 33s, but 35s are next. Cruising 68-70 is around 26-2700 RPM

 

[Timmy390]

So many factors go into gears.

I went from stock 3.50's to 4.11's with stock 3 speed 32's and a tired 302 and wish I had gone with a bit more gear.

Replaced the carb 302 with a stock EFI 351W from a 96 Van and WOW.....4.11's seem to be a more appropriate choice and the stock 3 speed is much more lively as well. Only issue I have now is needing a 4th gear. Torque is crazy with the 351W.

As for what brand gears, I went with no name 9 gears bought off eBay and USA standard gears up front in the 44. Both setup well and have several years on them without issue.

For choosing gears, why not do the 9 with a gear choice and see how it drives (2 wheel drive only) with your setup. Don't like it, sell them and get another set (higher or lower) and test them. A Ford 9 is easy to setup and gears are cheap. The 44 is where you spend the money and have a harder time setting them up.

Tim

 

[Greg_B]

I went from 3:50s to 4:56 with the stock C4 and 35s. Great setup for offroad and really I am not unhappy with them except when I an taking a long drive on the road. I feel like I need a 4th gear. I drove my Bronco to Super Celebration which is close to a 3 hour drive. I just kept it under 50MPH because of the RPMs and of course I was cussed for holding up traffic. I can run 70 but it is really turning some rpms... I drove it up to Duffs a while back and took the interstate home... felt like I was red lining it

Saturday I took a drive to Chattanooga so I just took all the back roads so I could keep it under 45 most of the time.

It is really all about what you are going to do with it.

Greg

 

[rjrobin2002]

I drive 55-60mph 40 miles to work every day with 35s, C4 and 4.56 gears and love it. Would not recomend my set up for 70-80 mph interstate driving though. Some '35s' measure 33" with a tape. My General 35s measure 35.5" with a tape. I ran 4.10s with my C4 amd 35s and it cruised well at 65mph

 

[DJs74]

So many factors go into gears.



For choosing gears, why not do the 9 with a gear choice and see how it drives (2 wheel drive only) with your setup. Don't like it, sell them and get another set (higher or lower) and test them. A Ford 9 is easy to setup and gears are cheap. The 44 is where you spend the money and have a harder time setting them up.

Tim

Very slick thinking Timmy on doing the R&D on the 9" only, then after satisfied, proceed with the front D44 gears... EXCELLENT approach!

DJs74

 

[LOVNBRONCOS]

Just purchased G2 4.56 gears from 4x4 parts, read a lot of good reviews on the G2's.
Just got 500 miles on the break in period, no noise at all, haven't been able to go over 50 so far. running 33's going to 35's soon. 45 to 50 mph at 2000 to 2100 rpm. also added truetrac lockers front and back, lot more power and tork. happy so far

 

[Brent13]

Just purchased G2 4.56 gears from 4x4 parts, read a lot of good reviews on the G2's.
Just got 500 miles on the break in period, no noise at all, haven't been able to go over 50 so far. running 33's going to 35's soon. 45 to 50 mph at 2000 to 2100 rpm. also added truetrac lockers front and back, lot more power and tork. happy so far

Are you running a stock 3spd? I am doing gears soon. I am 33's and C4. I am considering splitting it in the middle. Most suggest to me to go 4.10. And everyone says I'll hate 4.56, so considering 4.30. I want to do this once, and do it right, so I am thinking to go deep, and if too deep, I'll buy 35's.

Brent

 

[Crush]

Im wanting to 4:56 so anyone gettin rid of some wanna make me a screaming deal im in!!!

 

[LOVNBRONCOS]

Running a NP435 but 2nd 3rd & 4th are all most identical to the 3 spd, I used this gear calculator to help me decide http://www.4lo.com/calc/geartable.php

 

[rjrobin2002]

I have yukon, but they jacked the prices way up since I bought mine 8 yrs ago. I installed G2 in my last and was impressed.

 

[bronconut73]

Are you running a stock 3spd? I am doing gears soon. I am 33's and C4. I am considering splitting it in the middle. Most suggest to me to go 4.10. And everyone says I'll hate 4.56, so considering 4.30. I want to do this once, and do it right, so I am thinking to go deep, and if too deep, I'll buy 35's.

Brent

I have 33's and a C4. Stock gearing was 3.50's.
I went with 4.11's.
It was an amazing difference in acceleration. It appears that all of these years I was building my engine just for this combination with 4.11's. It has all come together and None of my buddies rigs can hang with me in traffic, haha.

So the idea of 4.56's has crossed my mind since if a little more low gear was good, alot more low gear would be better right?....
Well....I can presently cruise down the highway pretty comfortably at 65 mph (less than 3000 rpm).
If I go to 4.56's I will lose a little of that....And I just cannot imagine it being anymore responsive than it is with the 4.11's or at least I can't imagine wanting it any more responsive, haha.
So I split the difference and stuck with the 4.11's and glad I did now.

The hot ticket is to get a 4R70W auto overdrive.
You have a lower first gear and you can run 4.88 gears and still turn less rpm than we are now at cruising speeds.
I will do it someday. For now though it is hard to beat 33's, a C4, and 4.11's.