Topic: 4.56 VS 4.88

[Mozman68]

well...I thought I would want 4.88's as well, but I think I will just spend the extra money and do a double axle swap and drop down into the 5's....want to  really put 35's on...

[Jeffy]

If it helps any, from personal experience, I'm running 4.88's.  35 BFG's and a 2.5L...   With a little intake work, exhaust work and ignition stuff, it does ok...  

I seriously cannot complain one bit!

 

Well, I'm running 4.56's and it can't be that different.  Bareable.  Intown it's fine.  Open roads at 70mph, it's a bit iffy.  Ran 32's and stock gears then ran 4.56's with 32's for a month or two before swapping the axle and going 35's.  Friend went from stock 33's and 4.56's to 33's and 4.88's.  Loved it.  I still recommend 5.38's for 35's and 5.13's for 33's which is what it would calculate to.  Although when 4WD&SU magazine would do a 2.5L build up that's what they would use.  Once they went 5.89:1 though.  They were the frist magazine to do 2.5L buildup's on a regular basis, too.

[j-freak153]

from my understanding, calculations using the gear calculator, a jp with 4.88s with 35" tires will  have a little more grunt than stock performance and running 38s will have a little below, including (i assume) milage for fuel...i ran into this guy that has 4.88s and 35s on his 2.5L and he said it was great...i know this setup will be the one i use because eventually, ill be putting in a v8 and 4spd...with a currie 9"in the front and back