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#1 What Diff to Use in a 120ySSS
cossee Posted on: 2006/3/23 11:43
Any one have EASY Answer for me.
Have a 1975 120ySSS (NZ Model) with 5 Speed Box
Have all the HP I want now (195HP),
But Now need to change Diff Ratio.
I was told a 1200 Ute Diff Head would Bolt Sttraigh in ???
( Heard that one before)
But if ANY ONES Done it or can advise,
Much Apreicated
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#2 Re: What Diff to Use in a 120ySSS
sidedraught Posted on: 2006/3/23 11:57
I am thinking that a 120Y should have an H150 or a Borg Warner diff, neither of which will take the ute diff H165 head.
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#3 Re: What Diff to Use in a 120ySSS
Dats-hot Posted on: 2006/3/23 12:04
Quote:

cossee wrote:
I was told a 1200 Ute Diff Head would Bolt Sttraigh in
He lied, it wont, but you should be able to fit the whole ute rear end without too much trouble.
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#4 Re: What Diff to Use in a 120ySSS
ddgonzal Posted on: 2006/3/23 17:52
Quote:
Have a 1975 120ySSS ... (195HP)
Using the original A-series engine? It must be either a high RPM race engine or supercharged. Would love to hear more details.
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#5 Re: What Diff to Use in a 120ySSS
Posted on: 2006/3/24 0:11
most probably jap spec moddified L series 120 Y
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#6 Re: What Diff to Use in a 120ySSS
sidedraught Posted on: 2006/3/24 0:16
Says its the NZ model SSS, which was an A series.
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#7 Re: What Diff to Use in a 120ySSS
Dodgeman Posted on: 2006/3/24 1:14
Quote:

cossee wrote:
Have a 1975 120ySSS (NZ Model) with 5 Speed Box
Have all the HP I want now (195HP),
But Now need to change Diff Ratio.
What ratio do you want to change it to. There are a limited number of ratios available in the different diffs, & the bigger, stronger ones, which have the widest range of ratio's, will need to have their axle housings narrowed, & axles shortened to fit under.
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#8 Re: What Diff to Use in a 120ySSS
stirlingmac Posted on: 2006/3/24 1:23
The early pre 80' utes ran the 145 diffs and they were 4:1:1. Though a 145 won't handle 195 Hp. Look on Trademe at the moment and you'll find at least 3 165 roadstar ute diffs for sale. They almost bolt straight in and will handle the power you have if you are gentle.
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#9 Re: What Diff to Use in a 120ySSS
cossee Posted on: 2006/4/13 9:59
Hey thanks for the info, You say a 165 Roadstar would fit the STD 120y Diff,
Any idea what's actualy involved, is it a Real Major?
Also I'm in NZ and can't log ont on TradeMe Australia, You couldn't send a Link to get me on ?
Shame thre wer't more diff options for the 120y
Cheers.
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#10 Re: What Diff to Use in a 120ySSS
sidedraught Posted on: 2006/4/13 14:38
Quote:
You say a 165 Roadstar would fit the STD 120y Diff,

I think you will find it wont fit the STD 120y Diff, not the other way around.

Quote:
Also I'm in NZ and can't log ont on TradeMe Australia, You couldn't send a Link to get me on ?


Stirling Mac is talking about TradeMe in New Zealand.

Cheers.
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