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What Diff Ratio of the Commercial Vehicles (XH) 

 

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 Post subject: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Wed Oct 20, 2010 4:46 am 
Oompa Loompa
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Location: whyalla
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i have a XH panel van and i was wondering what the diff ratio is as its not used for commercial purposes i was wondering if i could put in a sedan centre to make it more of a highway car..
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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Wed Oct 20, 2010 9:18 am 
Getting Side Ways
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Both of my XH utes had 3.23:1 rear axles in them. The XR's will probably have a 3.45:1. Some sedans had a 3.0?, but I couldnt tell which ones. The 3.23 works out at approx 2000rpm @ 110-odd k's. I used to get 600ks to a tank on the highway with those gears.....

 

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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Thu Oct 21, 2010 6:46 am 
Oompa Loompa
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cool thanks mate i am not even getting that, im only getting 300 max out of a tank.

i have just replace thed OXY sensor and new aftermarket cat back exhaust to see if it makes a difference just want to explore other options..
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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Thu Oct 21, 2010 7:39 am 
Getting Side Ways
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sooty72 wrote:
Both of my XH utes had 3.23:1 rear axles in them. The XR's will probably have a 3.45:1. Some sedans had a 3.0?, but I couldnt tell which ones. The 3.23 works out at approx 2000rpm @ 110-odd k's. I used to get 600ks to a tank on the highway with those gears.....

ef xr8 and ltd have lsd 3.08-1 diffs.

 

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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Fri Oct 22, 2010 4:57 am 
Oompa Loompa
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Location: whyalla
SA, Australia

cheers bro sounds great now i just need to locate one..
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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Fri Oct 22, 2010 9:55 am 
Getting Side Ways
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i get 9L per 100 highway km's in my AU with 3.45's

and was getting 9.8L per 100 highway km's in my EF with 4.11's

changing the diff ratio wont help at all in my opinion
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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Fri Oct 22, 2010 8:41 pm 
Getting Side Ways
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My EF Gli sedan, has 3.08, and when it was auto and a stocker, it would be pretty much idling at 100kmh, was brilliant of the fuel and gas on long trips, not so much any more :D
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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Fri Oct 22, 2010 8:45 pm 
Getting Side Ways
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hans hartman wrote:
sooty72 wrote:
Both of my XH utes had 3.23:1 rear axles in them. The XR's will probably have a 3.45:1. Some sedans had a 3.0?, but I couldnt tell which ones. The 3.23 works out at approx 2000rpm @ 110-odd k's. I used to get 600ks to a tank on the highway with those gears.....

ef xr8 and ltd have lsd 3.08-1 diffs.


No they didnt. They had a 3.23 LSD, 6cyls had a 3.45.
Futuras got a 3.23, as did fairmonts, gli's 3.08.

I get 7 odd L/100ks with a manual and 3.45s, sits on about 2200rpm @100ks. Stock EF or worked AU motor, doesnt make a difference on the highway.

 

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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Wed Nov 03, 2010 1:17 pm 
Oompa Loompa
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Age: 38

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Ride: XH van

Location: whyalla
SA, Australia

thanks for your input..
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 Post subject: Re: What Diff Ratio of the Commercial Vehicles (XH)
Posted: Wed Nov 03, 2010 9:25 pm 
Getting Side Ways
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XFs had a 2.92 or a 2.77 in ltd's of the same era.

from eb2 on everything went to 3.23 and xr'6's 3.45
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