4.56 Gears?

[MTF]

He is a fairly new member he might not know to use thread tools and subsribe to a thread.

You might have to PM him

 

[Aidan]

Yes, it is highly recommended to keep the axle ratios as close as possible. For the Raptor axles, there are both 4.56 and 4.88 gears available for the front and rear axles. However, on some rockcrawler stuff where guys run a GM 14 Bolt in the rear of the buggy and a Dana 60 up front they may have 4.88 and 4.89 gear ratios. This set up will work fine for them because the difference is so miniscule.

The rule of thumb I've always heard is to keep it under 1% difference and you won't notice any problems. Basically there's more variation in tire sizes. 4.10 and 4.09 are a common combination too.

 

[MTF]

If your gonna do 100mph in 4x4 my guess would be, being off any percent can't be good for the transfer case. Just my opinion

 

[Aidan]

If you're gonna do 100mph in 4x4 you better not be on pavement in the first place which negates any real problems with different ratios

 

[Omani-Raptor]

I will be running 4.88 F&R gear set with 37" or 38" inch tires ... How is the power like? I like going fast on very soft sand dunes , so incline degrees put the truck to the test and I get stuck on the way up due to raptor weight and steep hill

Do u think this kit would help in these situations ? Pls feel free to have ur opinions

Thanks

 

[MTF]

Pavement!!! I thinking of the guys running around in the desert

 

[BigScott]

I will be running 4.88 F&R gear set with 37" or 38" inch tires ... How is the power like? I like going fast on very soft sand dunes , so incline degrees put the truck to the test and I get stuck on the way up due to raptor weight and steep hill

Do u think this kit would help in these situations ? Pls feel free to have ur opinions

Thanks

Oh crap, where's my gear, rpm, tire size chart. I am thinking with a 4.88 you will be just a little lower than 35" with 4.10 gears. Maybe a 5.?? would give you more horsepower back, Keep in mind that the weight of those larger tires takes power away so if you want a real powerful truck in sand see if the 5.?? range will fit

Should we get a Tire, RPM, Gear ratio, Speed chart posted as a sticky ?

 

[Squatting Dog]

Oh crap, where's my gear, rpm, tire size chart. I am thinking with a 4.88 you will be just a little lower than 35" with 4.10 gears. Maybe a 5.?? would give you more horsepower back, Keep in mind that the weight of those larger tires takes power away so if you want a real powerful truck in sand see if the 5.?? range will fit

Should we get a Tire, RPM, Gear ratio, Speed chart posted as a sticky ?

Just call Corey, he has the chart memorized

-Greg

 

[*jrwiii*]

I am doing a bit more research on parts that I used and making sure that what I did was the best way to make things work. The gears and bearings fit perfectly. I am working on setting up a vendor account with Birdman and will make everything available at fair prices.
On a side note the front gears went in without any issues at all.

 

[JsGarage]

Just looking at this the 4.56 gears sounds well for a stock configuration.

With the 6 speed transmission, it seems like 1-3 gears are the power gears and the others are simply for fuel economy.

4.56 would roughly raise the cruise rpms by 300-500rpms but should next in a 5-10% better acceleration.

Tire Gear Ratio Charts

Who sells these master kits? I'd be very interested in purchasing a 4.56 for my stock configured (tire size) raptor.