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final drive
Posted: Thu Oct 08, 2009 4:32 pm
by mr_mopar_neon
has any one or any one know any think about changing the final drive on a r/t box???
looking for a drag racing set up but nothing to ott
Posted: Thu Oct 08, 2009 5:25 pm
by occasional demons
The output shaft (part of the FD) is over $1000. It is cheaper to buy the 1.8 mtx.
Posted: Thu Oct 08, 2009 6:14 pm
by ZeroChad
There's a guy I think his name is Drakito on the other org that rebuilds trannies. I think he does 4.12 conversions as well. He might be of some help.
Posted: Thu Oct 08, 2009 6:31 pm
by racer12306
I thought this guy was looking for a 3.94 set.
The 4.12 is $$$, but it would be interesting.
Posted: Thu Oct 08, 2009 6:52 pm
by ZeroChad
I think he's looking to put a different final drive on the 3.94
Posted: Thu Oct 08, 2009 11:02 pm
by occasional demons
ZeroChad wrote:I think he's looking to put a different final drive on the 3.94
That was my impression, too.
Scratch the 1.8 MTX. The '01 parts has it as the same as the R/T MTX. The 4.12 is the 1.6 MTX part number 5016669AD $2,770.00
Standard 3.94 gears:
Part Number: 5017853AA SHAFT TRANSAXLE $1,370.00
Part Number: 4761103 GEAR DIFFERENTIAL RI $225.00
Posted: Fri Oct 09, 2009 7:52 am
by racer12306
My bad, i misread on a r/t box as to a r/t box.
Posted: Fri Oct 09, 2009 5:39 pm
by mr_mopar_neon
so its going to cost me a loooooot of money
Posted: Fri Oct 09, 2009 5:47 pm
by occasional demons
Unless Drakito has a (cheaper) source for 4.12 gears, it will be way OTT.
Posted: Fri Oct 09, 2009 6:02 pm
by ZeroChad
Posted: Sat Oct 10, 2009 12:26 am
by Donkeypuncher
Or you could just get shorter tires, it accomplishes the same thing.
Posted: Sat Oct 10, 2009 1:23 am
by occasional demons
Yeah, but you may be scraping the underside of your car off to do it.
Fuck it, weight reduction FTW!
Posted: Sat Oct 10, 2009 4:48 am
by Donkeypuncher
I figure the gap between 3.94 to 4.12 is small enough it wouldn't be a problem. How much smaller would you really need to go, maybe 2 sidewall sizes smaller.
It would be a bigger problem with 17's though, don't want the sidewall too thin.
Posted: Sat Oct 10, 2009 7:30 am
by occasional demons
I was thinking more in terms of 3.55 to 4.12, and I was adding a little exaggeration/humor to it.
Posted: Mon Oct 12, 2009 4:09 pm
by mr_mopar_neon
thanks guys ill look in to it a little more yet