Like the title says, I have a complete 09 4.77 rear diff pulled from wrecked car with 500 miles on it.
1200.00

 

would u sell the 4.77 final drive gear alone

 

Sorry, cannot seperate

 

man i want this sooo bad

 

I am in Dallas, Tx.
This is a direct swap.

 

It prob be easier to just swap diffs than the gears alone. plus 4.77 could be for racing, and stock for street use... If i had money id be on this.

 

well im guessin he wouldnt want my 4.44 gears

 

Would this fit on a 2004 AT rx8? I assume it would

 

i'm confused now. i'm finding a new one from mazda for a grand.

 

I think that may be for just the ring and pinion?

 

Yes, it is a direct swap

 

hmm. interested. i got a quote to put it in. mazda says 6.5 hours, but it won't take that long. i figure i can get it put in for around 350.

what sort of gains should i expect?

 

Youre not going to gain anything. The car will rev up faster in gear so your top mph for each gear will be lower but it will get you up and moving faster.

 

Yes, there will be no power gain. You will just have a little faster 0 to 60 time.

 

+1 no HP gain if thats what you're asking, its all about the gearing of your car. this would be an awesome upgrade.. so tempted....

 

that counts as a gain. i wasn't thinking hp gains. i meant what exactly was the overall benefit. and this was answered nicely. i had sort of a vague idea about why this would be good. now I know exactly why. so thanks.

and i'm still interested in this.

 

On a stock tire RX-8, the difference at the top of 2nd gear at 9k rpm is 68.84 mph versus 64.07 mph with the 4.77 gearing.

Mechanical leverage (torque) goes up by a little over 100 ft/lbs at the rear tires.

Yes, I am **** enough to have built an entire spread sheet which calculates this, taking into account everything down to exact tire circumference.

 

Or you can just use an RPM calculator online and save you some trouble! Lol!!

 

is this sold or what? i asked for more pics -- closer, underside-- to assure me that it wasn't damaged in the wreck, but nothing.

 

I will post pics this evening

 

im sorry, but what ration is our stock diff?

 

4.44

 

thanks, so will the speedo or odometer reads not correctly?

 

no it has nothing to do with the speedometer

 

Rpm calculator doesn't account for tire size does it? Or calculate ft/lbs of torque in each gear?