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just wanted to know

leigh 7005

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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 like:driving::driving:this is what it dosnt do lol
 

88GreenVN

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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

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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

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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

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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

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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

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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

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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

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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
 
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