diff gears

[scared_]

i currently have 3.08 grears, the stock v6 ones in my diff and want to change them, more speed down low would be good but dont want to loose to much up top. any one changed them and whats best?? the vp ss comes with 3.27, is that much better?? i dont know a great heap about gears. some ppl have said 4.11, but have been told thats to high and there would be no need for first (its manual (i dont think i could live with out my gearstick!)). worth getting a mini spool? or choo the tires up to much? LSD? just need a bit of insite...
thanx chris

[HATER VP]

At the most go 3.77. Id say go 3.45 with LSD.
Pretty sure VP SS's didnt come out with those gears.

[Doctor Sodways]

4.11 would be rediculous in a street driven car, and especially a manual, 3.7 wont be too bad, and is generally regarded as the best ratio, 3.45 will give you that bit extra down low you want, and keep your economy at a reasonable level. Personally, id be getting some 3.7s

[ucwepn]

So what type of diffs do VN 6 cyl's have? I heard they are 28 spline like the VL turbo diffs?

[VN Commy]

Yep thats true they are 28 spline like the VL turbo diffs. Just longer with 3.08. More like the VL V8 diff.

[simc]

VN 6cyl has a openwheeler, 28sp, 4pin center, with 28sp axels and a 3.08 ratio.
On the street, open wheeler, anyting above 3.45 is usless as you will have too much wheelspin. 3.89, 4.11 are also pretty usless on standard engines as they dont have the high rpm power to keep pulling at higher speeds.

3.45, nice average, 3.7 max on a street auto with a stockish engine, 3.89 or 4.11 locked, nice burnouts

Keep in mind that your speedo needs correcting after a gear change.

[1991_Vn2nV]

i currently have 3.08 grears, the stock v6 ones in my diff and want to change them, more speed down low would be good but dont want to loose to much up top. any one changed them and whats best?? the vp ss comes with 3.27, is that much better?? i dont know a great heap about gears. some ppl have said 4.11, but have been told thats to high and there would be no need for first (its manual (i dont think i could live with out my gearstick!)). worth getting a mini spool? or choo the tires up to much? LSD? just need a bit of insite...
thanx chris

Dont know who fed you that crap, but the VP SS had the same gear ratio as the stock V6. All of em had the 3.08 ratio.

All of the VN/VP diffs are 4 pinion 28 spline and 3.08 ratio's except for some of the VN HSV's (Group A and SV5000 had VL Turbo diffs with a 3.45 ratio).

IMO get 3.7's. If you do alot of highway driving then just get 3.45's.

[enhancedss]

Diff gears,

me personally id go 3.9's to get the car of the line, due to the car hasnt got the torque from a v6, fuel economy wont be much of a difference between between 3.7's and 3.9's.

If auto the car has a lock up convertor so u wont be reving to hard at 100km/h, if manual you will utilise the 5th gear better.

Normally you will find better fuel economy around town from changing diff gears, cause your taking alot of the load of the engine, hence its working better.

[scared_]

Dont know who fed you that crap, but the VP SS had the same gear ratio as the stock V6. All of em had the 3.08 ratio.

All of the VN/VP diffs are 4 pinion 28 spline and 3.08 ratio's except for some of the VN HSV's (Group A and SV5000 had VL Turbo diffs with a 3.45 ratio).

IMO get 3.7's. If you do alot of highway driving then just get 3.45's.

if you have a look in your owners manual it says different! section 10 page 3.
straight out of the book
sedan/wagon 3.08:1
(excpt v6 SS)
v6 SS only 3.27:1

mabey my owners handbook is one of print. anyone wanna buy it? one of a kind, original condition...

[1991_Vn2nV]

if you have a look in your owners manual it says different! section 10 page 3.
straight out of the book
sedan/wagon 3.08:1
(excpt v6 SS)
v6 SS only 3.27:1

mabey my owners handbook is one of print. anyone wanna buy it? one of a kind, original condition...

Thats the V6 SS from New Zealand...

No V6 SS's were sold here. No VN/VP's wth the 3.27 ratio were sold here either.

[AirStrike]

Dont know who fed you that crap, but the VP SS had the same gear ratio as the stock V6. All of em had the 3.08 ratio.

All of the VN/VP diffs are 4 pinion 28 spline and 3.08 ratio's except for some of the VN HSV's (Group A and SV5000 had VL Turbo diffs with a 3.45 ratio).

IMO get 3.7's. If you do alot of highway driving then just get 3.45's.

As far as I know only the Group A got the 3.45 ratio (due to the 6 speed ZF box) and shorter VL axles (because of the 17x8" rims, first Australian production car to use 17's).
The Group A also had shot peened gears for added strength.
AirStrike

[1991_Vn2nV]

As far as I know only the Group A got the 3.45 ratio (due to the 6 speed ZF box) and shorter VL axles (because of the 17x8" rims, first Australian production car to use 17's).
The Group A also had shot peened gears for added strength.
AirStrike

SV5000 also, which also had 8" wide rims, however they were only 16's. But of course that doesnt change the overall diameter of the wheel, its the width that counts here.

[IJUSTWANTONE]

Thats the V6 SS from New Zealand...

No V6 SS's were sold here. No VN/VP's wth the 3.27 ratio were sold here either.

never heard of a V6 SS over here. we have a V6 S commodore. All the SS's i have ever seen have been V8.

[AirStrike]

never heard of a V6 SS over here. we have a V6 S commodore. All the SS's i have ever seen have been V8.

Hell you can get V6 GTS's over there.
AirStrike

[1991_Vn2nV]

never heard of a V6 SS over here. we have a V6 S commodore. All the SS's i have ever seen have been V8.

Well New Zealand was the only place that got em, same as the 4 cylinder commy's.

[greenfoam]

As far as I know only the Group A got the 3.45 ratio (due to the 6 speed ZF box) and shorter VL axles (because of the 17x8" rims, first Australian production car to use 17's).
The Group A also had shot peened gears for added strength.
AirStrike

Yep yep, not only that but all the V8 diffs have the shot peened gears, that's what the "high performace" plate on the V8 diffs translates into, not that it matters because even the normal gears are strong enough for insane power anyway

[Full Spectrum]

Diff gears,

me personally id go 3.9's to get the car of the line, due to the car hasnt got the torque from a v6, fuel economy wont be much of a difference between between 3.7's and 3.9's.

If auto the car has a lock up convertor so u wont be reving to hard at 100km/h, if manual you will utilise the 5th gear better.

Normally you will find better fuel economy around town from changing diff gears, cause your taking alot of the load of the engine, hence its working better.

The invisible 5th gear Comes in handy keeping the revs to 1700-1800rpm 2 100.

[AirStrike]

Yep yep, not only that but all the V8 diffs have the shot peened gears, that's what the "high performace" plate on the V8 diffs translates into, not that it matters because even the normal gears are strong enough for insane power anyway

Ummmm even the V6 diffs are plated high performance, this relates to a single spinner.
Trust me, only the Group A got the shot peened rear.
AirStrike

[VN Commy]

never heard of a V6 SS over here. we have a V6 S commodore. All the SS's i have ever seen have been V8.

Yea I was gona say...