hey i have got 1 74 1200 ute and was wondering if anywhere out there is a lsd head that will bolt straight into my ute with little or not work? i am running a fully worked a15

We've discussed this a lot. But to save you some time.

You are looking for a H165 LSD or if you have the smaller diff (might be possible), you'll need an H145 LSD. Neither are cheap or readily available. Most people go looking for other diff assemblies and narrow them to get LSD.

Chris

Hey Chris,
Which are the most readily available to narrow, preferably with discs
Thanks
Dave

Unfortunately.. there aren't many lightweight diff assemblies available for people with small cars wanting LSD.

Think about how many fixed axle RWD cars that are common in wreckers?
The next question would be how many RWD cars have LSD from the factory?
Both of these questions will probably come back with "not many".

So many of us have to be satisfied with a larger diff that is heavier. The diff assembly is "unsprung weight", which is not a good thing.

I like BorgWarner Commodore diffs because they are cheap and common. Some have discs and LSD. They cutdown well to suit a 1200. You only need to shorten the housing, then cutdown the long axle, and switch axles side to sides. They come in 2 sizes 25 spline and 28 spline. I really don't see the need for a 28 spline in a Datto, they are bloody huge, and only good for hardcore dragracing and horrible for other forms of racing or general driving. The 28 spline VL Turbo diff is the best as a 3.9:1 LSD. There are V8 28 spline LSDs available but many of those are 3.08:1. The 25 spline LSD centres were available as options too (less common). But Borgwarner diffs are quite common, so they also came in some R31 Skylines.

So to get an A-series compatible LSD, you can really only spend $1000 and try and keep the lightweight standard diff.

Horses for courses..

I needed a larger diff, I wanted discs (not really needed) I wanted LSD (or option for LSD) I needed cheap.. ($120 for non LSD). I went for the Holden VL Commodore Diff with 25 spline axles 3.45:1 and discs (Good enough for the RB30E)... Good enough for a CA18DET. I can convert to 28 spline axles and a 28 spline LSD centre if I break a 25 spline axle, or have trouble sourcing a LSD for the 25 spline..

There you go.
Chris

go sprung load locker/ phantom grip!!!!!!!

i will soon be making some of these for various diffs, gonna do a trial with a couple and then if all goes well, will go into mass production

i know where they can be had for $250, but expect them to be a fair whack cheaper than that