changing diff gears

[ryan86]

thought i would start my own thread and not take over some eno elses, i got a 99 vs 5l ute manual and looking into changing my diff gears but not too sure on what i should get, i chasing better acceleration from 0 to bout say 130ish, not to fussed bout the fuel issue and that so yeah im open to any ideas, cheers

[jokerflingo]

thought i would start my own thread and not take over some eno elses, i got a 99 vs 5l ute manual and looking into changing my diff gears but not too sure on what i should get, i chasing better acceleration from 0 to bout say 130ish, not to fussed bout the fuel issue and that so yeah im open to any ideas, cheers

Probably still could of just used all the info from searches, i believe most people end up going for 3.45's, 3.7's or 3.9's depending on highway use etc. I reckon for the V8 3.45's would be plenty.

[Stressball]

5 speed manuals benefit from 3.45s and 3.7s. 3.9s make the gears too short to be much use to anyone, and probably pretty frustrating eventually too.

[speed_freak]

i got 3.9's in mine with a getrag box and i love it. lots more punch down low and if your doing mainly suburb/city driving they use less fuel. im sitting at about 2,600rpm at 100 up from 2100 with the original gears

[tr3nt]

Wow 2,100?
Standard diff, Auto gearbox, 100km/h is at 1,800 RPM

[immortality]

Wow 2,100?
Standard diff, Auto gearbox, 100km/h is at 1,800 RPM

for any T5 equiped commodore which has a 0.72:1 5th gear OD ratio or auto with 0.70:1 OD. on the other hand the getrag only has 0.81:1 5th gear OD ratio so would cruise at a higher rpm for the same road speed.

[jokerflingo]

Im at about 2250rpm at 110km/h with the getrag.

[Ross D.]

i sit on 2600ish at 100 with 3.9's and i have the getrag and it increased my fuel mileage and i do a fair bit of highway driving. gets about 450-500km pretty easy. i would go 3.9's, you wont regret it!!

[Sgt Santa Cruz]

has anyone done the gear changes themself im quiet interested in giving this a go i wanna put 3.45s in the stato.. ive got a spare IRS LSD that i will give a crack at just need some pointers (where to start, special tools needed etc etc)

[Vee-ard]

Wow 2,100?
Standard diff, Auto gearbox, 100km/h is at 1,800 RPM

it is 55kph per 1000rpm with an auto box in 4th gear.

[_R_J_K_]

has anyone done the gear changes themself im quiet interested in giving this a go i wanna put 3.45s in the stato.. ive got a spare IRS LSD that i will give a crack at just need some pointers (where to start, special tools needed etc etc)

How to: Source your own diff gears and remove them yourself