ve diff gears

[shane_ve6l]

gday new to this site so still getting my head around it.

i have a 09 ssv ute m6. performance wise all stock. i have brought some 3.7 gears for it. but was speaking to a few mechanics and said i would b waisting my time putting them in (hardly notice much differnce). they say go for 4.11 or 3.9s. anyone done this upgrade or have opinions. just want a bit more take off power. im a p plater so cant really put exhaust system in or a cam. as it will make to much noise.

[blu ute]

4.11 s might be a bit big for a daily. 3.7 will be fine.
Oh and welcome to the forum
Good luck.

[peter b]

gday new to this site so still getting my head around it.

i have a 09 ssv ute m6. performance wise all stock. i have brought some 3.7 gears for it. but was speaking to a few mechanics and said i would b waisting my time putting them in (hardly notice much differnce). they say go for 4.11 or 3.9s. anyone done this upgrade or have opinions. just want a bit more take off power. im a p plater so cant really put exhaust system in or a cam. as it will make to much noise.

The mechanics you spoke to are talking out their ass 3.7 will make a difference and especially for a stock car. Just use what you got you will enjoy it.
PS a very common upgrade on the manual VE ss is putting in 3.7's

[Wonky]

I can't speak from experience in that case but having gone from 3.08 to 3.46 (12% difference - noticeable) in my VZ SS and now 2.92 to 3.45 in my ute (18% difference - very noticable) I can see both points of view. 3.45 to 3.7 is only a 7% difference, so relatively minor. Depending on what it's costing you to do it's possibly quite a cost ineffective upgrade and you may be better putting the money to something else. However, on the other hand I've read quite a few people with 3.7s saying that they wouldn't want to go to 3.9 or 4.11 for a daily driver. However, that I guess is in the eyes of the beholder..........

There was also a recent thread on here in which it seems the 3.9 and 4.11 gears in the VE diff upgrades are not lasting all that well........... :confused:

[shane_ve6l]

thanks for advice guys.

[macca_779]

I've said it before and I'll say it again. If you can't hit 100km/h in 2nd your way to short geared (3.7's should hit 102km/h in a VE as that's what I hit in mine @ 6800rpm too mind you. Unless your car is gutless as fark it's simply to much IMO.


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[thekidscar]

I cant beleive im the first to say it but.....

Wheres Bingo Billy??? or his latest incarnation when you need him????
:rofl:

James

[tarmac ute]

can anyone tell me how much it would cost to change diff gears. I have a Ve 2010 m6 litre ute which I think has 3.7 (correct me if I am wrong) would going to 4.11 be to much or am I better of with 3.9. This ute is used for tarmac rallying.

YouTube - Targa Tasmania 2011 - Sam Tapping

[Wonky]

Stock VE M6 have 3.45. Usual cost for a gear change and general spruce up I believe is in the $1000 - $1200 range then you can probably sell your 3.45 gears for about a third of that???? :confused: to recoup some of your outlay.

[mickeyrourke]

Sam - I'm guessing Macca is coming from a drag racing angle and he is probably right about that, but tarmac rallying is a different animal and changing into 3rd before 100kph is not a disaster IMO. Yes you might be swapping cogs sooner off the line but going to a 3.9 or 4.11 will make the gaps between the ratios seem closer together so if there are any massive gaps between gears in the M6 then the higher ratios will make them seem not so bad. I wouldn't worry about having to change into third well before 100kph because you want to be in 3rd 4th 5th & 6th most of the time anyway.
But I suggest you start by looking at what is the maximum top speed you want and work your way back from there.

We have a VP with a T5 (0.73 5th) and a 4.11. We always start in 2nd gear anyway - 1st is useless. This limits us to a top speed of 191kph at 5700rpm which is plenty fast for our dirt rallying - rarely get there. On tarmac in Tassie I would think that you'll be wanting to go faster for longer and more often than we ever get to our top speed. But even so your M6 probably has a 0.57 6th (yes?) so a 4.11 would still get you on the wrong side of 250kph. Not sure I'd be too comfortable going any faster than that in a ute! I reckon 4.11 is about right for you. Try asking some of the tarmac rally guys what they run.

[macca_779]

Sam - I'm guessing Macca is coming from a drag racing angle and he is probably right about that, but tarmac rallying is a different animal and changing into 3rd before 100kph is not a disaster IMO. Yes you might be swapping cogs sooner off the line but going to a 3.9 or 4.11 will make the gaps between the ratios seem closer together so if there are any massive gaps between gears in the M6 then the higher ratios will make them seem not so bad. I wouldn't worry about having to change into third well before 100kph because you want to be in 3rd 4th 5th & 6th most of the time anyway.
But I suggest you start by looking at what is the maximum top speed you want and work your way back from there.

We have a VP with a T5 (0.73 5th) and a 4.11. We always start in 2nd gear anyway - 1st is useless. This limits us to a top speed of 191kph at 5700rpm which is plenty fast for our dirt rallying - rarely get there. On tarmac in Tassie I would think that you'll be wanting to go faster for longer and more often than we ever get to our top speed. But even so your M6 probably has a 0.57 6th (yes?) so a 4.11 would still get you on the wrong side of 250kph. Not sure I'd be too comfortable going any faster than that in a ute! I reckon 4.11 is about right for you. Try asking some of the tarmac rally guys what they run.

Totally agree with your points mate. I personally don't really care for drag racing but there are aspects to consider in it. Having closer gears is all well and good. But the reality is you only need it if your coming out of the torque band. I know with my cam I'm not, so having gears closer together would actually hinder me on a circuit. 4.11's would kill my top speed too on most tracks i can think of. As for shorter gears helping acceleration, in one of the areas i use to test performance (handing, power down, power) I use a 90deg turn with a about a 100m stretch to a marker. With my old MM6 box I could hit 120km/h (6800rpm limiter) approx .75sec before the marker. I would usually just stick on the limiter going through as the time to change to 3rd added no conceivable speed. With my M12 box I'm @ 102km/h so I have to hit 3rd. Carrying 3rd through the turn or shifting to it after doesn't really change the trap speed much. The speed I trap at is still 120km/h, but now I have no fat as im doing it right on the marker not before it like previously.

The area where this really comes into its own is on the street in a common area many drivers will experience. The 80-120 overtake. Previously I would shift to 2nd to do this with max performance in mind. Now if I do it I'm wasting my time as the shift to second is so brief 80-102 its hardly worth it so I just go straight for 3rd. Which of course doesn't offer the same amount of acceleration as it did with my old ratios. Food for thought people.


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[tarmac ute]

Sam - I'm guessing Macca is coming from a drag racing angle and he is probably right about that, but tarmac rallying is a different animal and changing into 3rd before 100kph is not a disaster IMO. Yes you might be swapping cogs sooner off the line but going to a 3.9 or 4.11 will make the gaps between the ratios seem closer together so if there are any massive gaps between gears in the M6 then the higher ratios will make them seem not so bad. I wouldn't worry about having to change into third well before 100kph because you want to be in 3rd 4th 5th & 6th most of the time anyway.
But I suggest you start by looking at what is the maximum top speed you want and work your way back from there.

We have a VP with a T5 (0.73 5th) and a 4.11. We always start in 2nd gear anyway - 1st is useless. This limits us to a top speed of 191kph at 5700rpm which is plenty fast for our dirt rallying - rarely get there. On tarmac in Tassie I would think that you'll be wanting to go faster for longer and more often than we ever get to our top speed. But even so your M6 probably has a 0.57 6th (yes?) so a 4.11 would still get you on the wrong side of 250kph. Not sure I'd be too comfortable going any faster than that in a ute! I reckon 4.11 is about right for you. Try asking some of the tarmac rally guys what they run.

Thanks for the Help guys