BTS666

@BTS666 Yeah I put some N50R14's(around same size as 295/50) on my XE sedan, only had around 3mm clearance to the lower control arm & rubbed while moving,
If changed to Lower control arm to a tubular or RHS like then would have more clearance, but would fit a 275 quite easily stock,

All e series from ea series 2 have 28 spline 4 pinion btr diffs, the diffs are pretty easy to fit to xe/xf if you do some mixing and matching of e and x series diff bushes, alternatively Nathan's precision machining in Ballarat makes up bushes for the swap, he's a member from this forum (don't think he's active on here any more but his business cand be found on Facebook) and has an xf with a turbo sohc 4.0 that runs 9's using an e series diff, he's successfully done a few drag and drives with the car so he'd be the person to talk to

Yeah. Don't see them at the wreckers much anymore. I do recall a Volvo, called the lolvo, using the 8.8 behind a turbo ls motor. It broke other stuff but not the diff.

Will just stick with what's cheaper and easiest.

Was just curious and seeking info. Thanks mate.

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The 8.8, from what I understand, is a stout bit of gear, more than able to handle decent V8 torque and hard launches. The downside is that parts would be much harder to source here in Oz because of their limited use.

My opinion: I think a properly built 4-pinion, 28 spline BW 78 diff would have ample capacity to handle what you're planning to build. Going over to a completely different axle and brake setup is just creating more headaches for compatibility and engineering/roadworthiness.

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Depends what you mean by "best".

Late model Falcons with the ZF6 had 2.72 diff ratio, unless it was a XR6/XR8 etc.

Tyre size will also contribute - my LandCruiser with the Barra and ZF6 has 4.11 diffs, but that combined with the 33" tyres means it sits at 2k rpm at 100km/h.

Got a couple of supposedly decent diff builders in Rockhampton who do alot with the speedway cars, so hopefully one of the older guys will be able to help me.

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Got a couple of supposedly decent diff builders in Rockhampton who do alot with the speedway cars, so hopefully one of the older guys will be able to help me.

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Hey Deano i've done stuff like that years ago, can't remember where it is.

Generally, keeping to the same series of diff (ie 75 or 78) will ensure carriers and gears will interchange. For the shorter ratios, ie 2.92 and upwards, the housing will need to be 78 series.

My 302 is still running a 2-pin, 25 spline and 3.08 gears from a commo. It's holding up ok but has seen better days. The axles are twisting a bit and the spider gears are getting noisy around corners. Housing was from an XG with solid rear rotors. My car is a wagon so ute stuff is what you use in the rear end (same floorpan).

I have a 28 spline centre and axles to throw in it (using the 3.08 gears), when time permits.

So to answer your question, yes you will need to upgrade to 28 spline internals and axles. A 25 spline limo will not live a happy and prosperous life behind anything more than a stock 6.

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Seals that then. Fuel cell in the boot, and an underbody mounted surge tank. 

there's possibly threads By @gerg regarding fitting 28 spline stuff to the 25 spline axles, but generally you'd just fit an EB ED EF EL diff (EF EL had the hand brake inside the disc but very much the same diff, probably more differences) 
the EB diff has a wider bush for the lower trailing arm, fit that (better) on one end of your XF trailing arms or if you get the EB ones, fit an XF one at the front and it will bolt in.
some of the later diffs have adjustable pinion angle (2 sets of top trailing arm mounts, assume for lowered XR6  possible EB GT etc) i've had one and it was from a basic falcon but it wasn't in another so there's no definite finding source. 

Guess it depends what you're after, unless it's a track car I figured it wasn't worth the potential defects/roadworthy issues - it's a 40 year old Falcon and will always handle like a boat, it'll just be a boat with expensive coilovers 😂 Not sure it's worth the extra drama and money over just getting a good set of standard kit.

the EB diff is much stronger,  
XF diff is 25 spline 2 pin center
EB diff 28 spline 4 pin center. 
 
if you stick a mild 351 in front of a NON LSD XF diff, it will break especially if you are spinning one wheel *(heats up the spider gear pins) 
if you have an LSD one they are better, i've had no issue with LSDs on 140rwkw ish power/torque (1UZ lexus or mild 351 both manuals) 
 
the reason I stuck with the XF LSD with the 1UZ is due to the engineer wanting Vented discs on rear retained (EB ones are solid) otherwise i'd have stuck the EB diff in. you can get 28spline in the XF style diff, the XE 351s had it and LTD with 351 etc. but they'd be barely possible to identify if you could even find one. 

I got the XYZ kit for an XD (only the fronts though), cost just shy of a grand at the time I think. They seemed good when I had them in but didn't want the hassle with getting engineering etc, took them out for RWC.

So, finally got around to making a case for it all, and a few pictures.
 
Adding some standoffs for the pcb to sit on

 
pcb clipped in, I also made another board this time soldering the wires directly to the board. Easier, cheaper and less stuff to go wrong.

 
A hole on the bottom of the case, where you can adjust the trimpot. Remebering its a 90ohms difference you can set the range with it so like 0-90 or 7-97 or 8-98 etc.

 
Finished box

 
Just as a size comparison to a standard 9volt battery.

 
Overall, everything worked out pretty well, except I doubt id do a SMD component project again. Well maybe for the resistors and caps, but not the IC, they are just way to small and a pain to do.
 
I have everything to set it up done now, I just need to install the fuel cell and hook it up but that may be awhile or may not
 
 
Edit: I just did a quick sticker to wrap around it. well cause I was bored

Won't work because the carby fuel pump is mechanical and mounted on the old xf engine  

EA to ED seats bolt directly in 1988 onwards XF van and ute. 
if you mean the rails. 
 
not sure if the seat parts swap to the older rails or not though.  the tilt mechanism might be the exception to EA to ED seats, base model ones might be swappable. 
definitely check before committing. (take a seat rail with you perhaps
 

Better off getting Repco to get them direct from Autotechnica
Less companies adding their price on that way

Haha that's the best, wish I still had a mate who worked there.
 
 
Yeah there's heaps of options, some look stockish too. As long as it doesn't require an engineer cert to pass inspection or something stupid like that I'll get a set.

Will check that out. My son works for repco, who now own rsre spares, so I'll get it for employees cost.

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Or a 69 Mustang

Yeah that's the price for the pair, delivery is like 100 extra. I like the second ones too.

Will call him Monday morning. Set an alarm to remember even. 

He may have: I mean, no guarantees, but he did manage to rustle up a fairly rare indicator assembly for my XH the last time I was there. Best way to see is to contact him: he doesn't have a website (not like Jolly's U-pull), but you can call him on (03) 9309 3223 (M-F 8:30am-5pm). Best of luck.

@thorne
would "Mr Car Parts " have aftermarket XF tail lights?
 
 

Wish SSS would re make the xf tail lights.