street/track rear setup..

[bl0wn02gt]

so ive been lookin for awhile at different rear end setups and i was lookin for some opinions. im lookin to put 3.90s into my 02 but im afraid that runnin with slicks at the track will end up ripping my rear apart. would 31 splines and a locker rear be the best bang for the buck yet allow me to drive the streets without a problem?? all i really want to do is be able to run the car maybe once a month at the track and not have to worry about the rear..thanks



02 GT
Procharged @ 10 psi
42# injectors
NGK plugs
75mm TB
intake plenum
Flowmasters with h pipe

 

[1LowGT]

my preference is 31 splines and a new carrier and a rearend girdle,i think 3.90s are a little steep for a procharger though,probably go 3.73s instead

 

[bl0wn02gt]

hmm ive read some posts that 4.10s on blown GTs were fine with a easy launch so i figured with a beefed up rear 3.90s wouldnt pose much of a problem

 

[sgarlic]

Can't go wrong with a centrifugal and a set of 4.10's. Like everyone says here, "don't fear the gear." Swapping to 3.73's weren't that big a difference to me, and I think you'll be dissapointed if you don't go 4.10's.

If you were Kenne Belle or Eaton, I'd recommend differently.

Sorry.. :OT:

 

[bl0wn02gt]

ok ok got some good info.. i think im going to go with the 4.10s..anyone else on the rest of my setup?

 

[1LowGT]

im not a expert but with a power adder i wouldnt think you would need 4.10s i was told that the blower builds the torque so you dont need the extra gear.

 

[tomustang]

weld the Axle Tubles

lower control arms to help the wheel hop

 

[03ghoststang]

and get some subframe connectors, and the 4.10's will go great with the centri S/C

 

[bl0wn02gt]

great thanks guys..but my main concern is can i run 4.10s in the stock rear end and not hafta worry about breakin an axle or something in the rear?? (esp with the centri and slicks)

 

[03ghoststang]

i would also get the 31 spline axles and diff, because you might break something or you may not but for your own assurance. Even though the centri starts to wake up around 3,000-3,500 rpm it would depend where you'll be launching the car at...

 

[bl0wn02gt]

ok then ill def go with the 31 splines and diff with the 4.10s..thanks a lot everyone

 

[helty]

weld the Axle Tubles

lower control arms to help the wheel hop

look into welding the torque boxes too. im going the same route you are, only im building my rear (with 4.10s) before going with the centri.

 

[bl0wn02gt]

what will this help with? i dont want to get too crazy with the rear i just want to be able to run it here and there without breaking an axle

 

[helty]

what will this help with? i dont want to get too crazy with the rear i just want to be able to run it here and there without breaking an axle

welding the torque boxes isn't really a "performance" mod, its more or less a "better safe than sorry" mod that comes into play when you're making higher power numbers. here, read this and decide if its something you want to do. if you decide welding the torque boxes isnt something you're worried about, i still recommend welding the axle tubes.

http://www.modulardepot.com/?show=articlesdet&aid=14