9 inch diffs?

[5.0lVL]

I am gonna stroke my motor out to a 355 (its a 308) mates have told me that I should look at replacing the diff to a 9 inch and possibly changing the tail shaft.

Where in Sydney are there places that I can get these parts? Also, should I be installing a shift kit (stock auto gearbox). Are these bits available second hand anywhere?

As always guys, any help is very much appreciated.

[MAXPSI]

28spline borg waner diff are strong

[Dose Pipe]

stick with the borgwarner and if you need more strength just get some 35 spline billets

[5.0lVL]

stick with the borgwarner and if you need more strength just get some 35 spline billets

Cheers Boys! Now, anyone know what I should be paying for one? Know of any places that sell em reco'd? Im in Sydney!

Thanks again fella's

[bangers]

if you already have a V8 then just stick with the diff you have. i hear the standard tailshaft is plenty strong enough too. you shouldn't have to change anything if you're only going to 355.

[5.0lVL]

if you already have a V8 then just stick with the diff you have. i hear the standard tailshaft is plenty strong enough too. you shouldn't have to change anything if you're only going to 355.

Really? Then that is a bonus, Do you reckon the auto box is strong enough? (Sorry for all the questions!) Another bloke keeps telling me to instal a shift kit. I thought that this may put extra stress on the diff?

[VL Berlina 5speed]

if you constantly churp 2nd it will place extra strane on the uni joints of the shaft and bushes in the rear end.
a shift kit is a good idea as it will reduce the sloppy shifts your gear box will do and prolong its life a bit (depending on driving styles)

how about giving a ruff idea at what power your aiming for and it will help decide on what else your need/want to do.
are you just stroking it or total rebuild with extras????

[5.0lVL]

if you constantly churp 2nd it will place extra strane on the uni joints of the shaft and bushes in the rear end.
a shift kit is a good idea as it will reduce the sloppy shifts your gear box will do and prolong its life a bit (depending on driving styles)

how about giving a ruff idea at what power your aiming for and it will help decide on what else your need/want to do.
are you just stroking it or total rebuild with extras????

Gday mate, well I am not sure what sort of power ill be gettting but I have gotten the block all cleaned up and oversized by 30 thou, the heads have been shaved, crack tested and pressure tested etc, new valves put in. I'm gonna use flat top pistons for better compression and as i said a stroker kit, also a torker manifold, stage 4 cam and 600 holley with vac secs.

So what do ya reckon?

Hopefully its a good street car!

[POVRTY]

a shift kit is a god idea it will make it a lot more fun to drive also! but it will put more straighn on your drive line

[bangers]

a shift kit would help gear changes. depending on how you plan to drive it as to what stage shift kit you'll need. i still think you won't need to change the tailshaft and rear end, i know guys who have built tougher cars than that and kept the original rear end in (was a vn but pretty much same rear end). you could go a 9" but they are a heavier diff and will take a little more power to turn. leave it as is i say and if you spit it then replace it.

[Shane1989]

Yea, its gonna be a beast m8. You may want to be putting a 9" in the thing. Especially with those mods you have listed. The kinda torque you will putting through the driveline CAN AND WILL break your tailshaft and or just obliterate your rearend completly. If you got the money I would say you should put in a 4 link 9" weld in setup, or get a detroit locker diff for it. Also the Uni joints will be under heaps of stress. But if you take it easy and dont try to launch it all the time then the driveline should be ok for now....

[5.0lVL]

Thanks fella's, some conflicting info here, my brother reckons drive it till (if) the diff blows then change it, im not a mental driver, I drive fairly safely, but I still want to have a bit fun here and there.

[MAXPSI]

Thanks fella's, some conflicting info here, my brother reckons drive it till (if) the diff blows then change it, im not a mental driver, I drive fairly safely, but I still want to have a bit fun here and there.

Best idea dont fix it until it breaks,my borg warner is still holding on

[5.0lVL]

Also, IM BLOODY PUMPED, the new crank is getting balanced this week, i cant wait to get all the parts and finally see the engine getting put back together! Hopefuly everything works first go, knowing my luck though, there will be some sort of fark up!

[5.0lVL]

Best idea dont fix it until it breaks,my borg warner is still holding on

Is that what they come with? A borg warner?

[MAXPSI]

ya vls with v8s or turbo come with a 28spline borg warner standard

vl n/a comw with 25slpine borg warner

of coarse the 28pline one is the one you need

[Boonz]

go with billet axles if you want to run alot of power.... i had them installed when i put my new diff in cos the have a habit of bending, they aren't all that expensive either but if you want to build a strong diff then you have to spend the money, simple as that

[AirStrike]

stick with the borgwarner and if you need more strength just get some 35 spline billets

Where would you get these from? Also what about a center too suit?