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Hey what’s what diff gears should I be looking at to get my 304 wagon off the line quicker

Miguel304

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Hey it’s my first time posting I have recently got a vr 5ltr wagon what diff gears do I need to get it off the line quicker
 

vs-lover

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Do you know what's in it currently ? is it a 3.08 diff centre ?
 

the_boozer

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What gains are you really going to get ? The gain will be bugger all anyway its not going to beat the ls engine if its a road car you drive everyday leave it alone , easy to see Im a country bloke whos cars spend most of their time at 100k's. 3.7:1 lsd? If you go 3.89:1 how many revs are will that be at @100k's
 

immortality

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How much faster do you want to accelerate? Also keep in mind that with shorter diff gears (greater mechanical advantage) you will wheel spin easier so a diff centre upgrade will also be recommended to make use of the increased acceleration. Also keep in mind that with shorter diff gears what you gain in acceleration you loose in top end so car use has to be factored into the equation.

Stock = 3.08 gears
3.45 gear about 215rpm increase @ 100km/h ~ 2000 rpm
3.73 gears about 380 rpm increase @ 100km/h ~ 2200 rpm
3.91 gears about 485 rpm increase @ 100km/h ~ 2300 rpm
4.11 gears about 600 rpm increase @ 100km/h ~ 2400 rpm

For a manual car 3.45 gears work good, for an auto 3.73 are a decent compromise, if all out acceleration is the only goal that 4.11 FTW.
 

Miguel304

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okay Cheers mate I’ll look into getting a set of 3.91 I want it to be quick I’m not worried about anything over 100klm
And if I’m putting 3.91 in it what diff center would I need
 

immortality

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Trutrac type is a lot better than the factory cone style LSD centre if you can afford it but a properly tightened factory LSD will do the job.
 
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