just wanted to know

[leigh 7005]

i just wanted to know i have a vb sle 253 it has 278 diff gears im going to put a vl diff in very soon 345 gears will this give me alot better take off as the 278 gears are crap has anyone done this and what was the efects likethis is what it dosnt do lol

[leigh 7005]

anyone? at all

[88GreenVN]

in short yep - 2.78 is very tall indeed. I've never changed the diff gears before - but if you put short gears in it will launch much harder if thats what your after. If you do highway driving you'll hate them.
It will rev it's head off on the open road.

[DANNY8]

I got a VB SLE as well, did have a 253 trimatic and 2.78 diff....then changed to a 4spd....the diff gears still let it down ALOT. Chucked in a borgy 3.23 (VK diff, similar to VL, just different gears and is slightly shorter) and it was great! Way better take off...dunno bout skids tho, never tried one in it on the new diff. A 3.45 could only be better tho!

[leigh 7005]

what do you recon it will sit on a 100kph at the moment it sits at 1500rpm to 2000rpm with 14 in im putting 345 gears and 15 in

[vkberlina]

what do you recon it will sit on a 100kph at the moment it sits at 1500rpm to 2000rpm with 14 in im putting 345 gears and 15 in

what gearbox have you got?
If its a Trimatic heres some pretty standard figures for you so 2864rpm @ 100km/hr with either an aussie 4 speed or Traumatic

Gear Km/h per 1000 RPM Km/h @3000 RPM Km/h @5000 RPM
--------------------------------------------------------
1 13.75 41 69
2 21.82 65 109
3 34.91 105 175

Km/h RPM (in Gears)
-------------------------------
1 2 3
-------------------------------
10 728 458 286
20 1455 917 573
30 2183 1375 859
40 2910 1833 1146
50 3638 2291 1432
60 4365 2750 1719
70 3208 2005
80 3666 2291
90 4125 2578
100 4583 2864
110 3151
120 3437
130 3724
140 4010
150 4296
160 4583
170 4869

Gear Change RPM drop (change @3000) RPM drop (change @5000)
-------------------------------------------------------------
1 -> 2 -1110 (to 1890) -1850 (to 3150)
2 -> 3 -1125 (to 1875) -1875 (to 3125)

Scott

[leigh 7005]

its trimatic so 2864 rpm round abouts thats not to bad i might have to change my exhaust as its got a super turbo exhaust and it crap sound drowning a 100 now what muffler you run or suggest? lukey,red back?

[vkberlina]

its trimatic so 2864 rpm round abouts thats not to bad i might have to change my exhaust as its got a super turbo exhaust and it crap sound drowning a 100 now what muffler you run or suggest? lukey,red back?

The exhaust sould suit the engine, whats been done tot he engine? What sort of exhaust note do you want?

What size & what sort of system have you currently got? what headers have you got?

cheers
Scott

[leigh 7005]

ive got pacemakers then twin 21/2to muffler then single 3" and the muffler just says super turbo. not sure whats been done to engine as i buyed it that way but it gos ok just the diff lets it down big time.

[leigh 7005]

ive put the diff in today and used a vk borgy tail shaft and the only thing is the center bearing dosent line up so some modifying will be the go gonna make a bracket for now

[DANNY8]

Hmmm.....something don't seem right. The centre bearing should line up. We've done the borgy conversions a few times....but we used the rear half of the vk borgy tailshaft with the front half of the current tailshaft.....the centre bearings has always lined up for us!

[leigh 7005]

when i used the salsbury front and borg rear its to long about an inch thats wierd is the borg rear a vk or vl im using vl diff and borg vk tail shaft

[leigh 7005]

ill try again tomorow and see if i done somthing wrong i dont see how thoe

[vkberlina]

ive got pacemakers then twin 21/2to muffler then single 3" and the muffler just says super turbo. not sure whats been done to engine as i buyed it that way but it gos ok just the diff lets it down big time.

The exhaust could be a bit big for the engine Im running something similar on my Injected 304.
If your only running the super turbo muffler (standard sport muffler pretty good quality) you could do a couple of things
Get a glass packed sport muffler for the front & the biggest mother of a hot dog you can get for the rear. It will give the nice V8 growl but take the edge off the drone. Really to reduce the drone you need to do smaller maybe twin 1 3/4" pipes instead of a single 3 and just use a single 3" as a tip.

As for the tial shaft I had to shorten the front part of my shaft by 15mm & modify my rear as well. I am running a T5 & VL Turbo LSD.

cheers
Scott

[leigh 7005]

1 3/4 thats abit small you mean 2 3/4 dont ya i just didnt want to go heaps quiet as the clutch fan gives me the s#%*s . as for the tail shaft im gonna get it cut and balanced when ive got enough money but fo now ill make a bracket maybe .

[walesy]

hey how did you go with the exhaust? i have a standard exhaust on mine and it sounds too quiet, was thinking of just putting a straight through single 2 1/2 in on it... atm its a single 2 1/3 with a muffler

[leigh 7005]

i havent got to that at the moment dose yours have the rear muffler? mine has just got front muffler then strait pipe and its not quiet at all

[vkberlina]

1 3/4 thats abit small you mean 2 3/4 dont ya i just didnt want to go heaps quiet as the clutch fan gives me the s#%*s . as for the tail shaft im gonna get it cut and balanced when ive got enough money but fo now ill make a bracket maybe .

No I did say TWIN 1 3/4 even twin 2" into single & back to twin. flow wise a propper twin 1 3/4 will do better then a single 3" whilst keeping the note quieter with mufflers on each pipe.
As for the clutch fan get rid of it then an put electrics on it.

cheers
Scott

[leigh 7005]

i have finaly found a way to fit the tailshaft its a bit strange a vl wagon rear half and salsbury front half and now it dose 3 gear cherpies lol. thanks every one for your help.

now my sle dose this lamo

[Cane_It]

As for the clutch fan get rid of it then an put electrics on it.

cheers
Scott

twin ford mondeo thermos fit up very easy in the early girls and have no probs keepin it cool. only have to do some minor cutting in the shroud.

[walesy]

lol my sl/e wouldnt lose traction even with a bit of help from castrol

[leigh 7005]

its the 600 holley gives it much better bottom end