woulld 4.10s be bad idea

[dvandentop]

woulld 4.10s be bad idea
if i want to do some road racing as well as drag racing???

i mean will it get crappy mileage on the highway then or what is the deal, thanks alot guys

[JBsZ06]

3.90's are better with M12 in the Z06 IMHO

[dvandentop]

can ya give me an idea of cost involved? can i install myself?

[JBsZ06]

Cartek a supporting vendor does the swap for a grand installed.

700 for the pumpkin ready for the installation.

At least on the last GP I saw.

[dvandentop]

is that with the hardened output shaft?

i am assuming that is reccomended

also is there a core charge ?

[JBsZ06]

Originally posted by dvandentop
is that with the hardened output shaft?

i am assuming that is reccomended

also is there a core charge ?

Not with hardened output shaft (probably a few hundred dollars more)

Yes there is a core charge.

Contact DTE? or cartek and they can give you the low down on pricing and details.

A very cool mod.

[JBsZ06]

2004 DTE Corvette Differential GP..... 3.42, 3.73, 3.90, 4.10

[JBsZ06]

cartek GP deal: CARTEK C5 Inhouse Gear Install Special.

[nutbush]

Yes your gas mileage will suck.

[JBsZ06]

fwiw..my gas mileage with my 3.73 seems about the same.

Highway mileage with the six speed is awesome no matter what...if you use sixth gear.

[eviLS6]

Originally posted by JBsZ06
fwiw..my gas mileage with my 3.73 seems about the same.

Highway mileage with the six speed is awesome no matter what...if you use sixth gear.

I think 4.10's bump your RPM's up around 500 in 6th gear at 60 mph. If you keep it in 5th on the freeway the RPM's jump up 500 from 1500 to 2k at 60 mph. Out of curiousity I kept it in 5th for a good distance on a flat surface and the MPG dropped from 28 to 25 mpg so you may loose 3mpg on the freeway where it counts. Around town I dont think it will matter as you may possibly have use of 5th gear more with the 4.10's.

The car will pull harder, so if your willing to sacrifice mileage go for it.

[dvandentop]

well thanks for the advice guys it seems like it is a good performance gain but am going to hold out until i get a cam 1st

[rs50pilot]

I don't you would 1st gear any more.

[itchynackers]

Huh?....

I went to a DTE Stage 4 3.73 rear. I'm happy with it. Not too much gear, and still don't have to shift to 5th before the 1/4.

[robz]

4.10 are good for the 1/4 mile and fine on the street. I've run them for a while now. Most road race guys say they are a bit too steep and many go with 3.42's or 3.73 but that's not my bag.