Buildind a Xflow for towing

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I am wondering what your opinions would be on building a 250 xflow for towing over reasonably long distances. I am now working on a td cortina as a project now and have decided to use my ute as a everyday driver and double as a towing vehicle.

I need it to comfortably tow the cortina and trailer mainly on the highway. What type of cam would you recomend. I already have 3.5 diff gears installed and think they would help, it is currently a 4 speed manual with a good daikin clutch but may consider changing to a auto.

I thought of going the V8 route but i have plenty of good xflow parts left over from my worked motor and am pretty confident working on them.

I am also leaning towards strait gas for a fuel and using a impco 225 mixer, L series converter and the efi mainolds.

Any opinions and info appreciated.

Cheers

Simon
 
Check the speed at 2500 rpm, and if its a wide ratio, get your single rail rebuilt. Then fix the stock shifter as per backlashes suggestion. The nylon bits always break.

If its got the 2.92:1 gear set and 640 mm tall tyres and wide ratio XF gearbox, it'll do 101 km/h in 4th, 71 in 3rd, 51 in 2nd, 29 km/h in 1st.

Fitting the wide ratio XF variant with 3.43, 2.00, 1.43 and 1.00:1 gears is best for towing. The T5 is too hard to fit cheaply, the six cylinder Aussie made ones are not super strong. The old BW single rail is very strong, and a full complement of parts are still available.

The auto, forget it. The cable kickdown BW's are costly to get strong and are only 3spd. C4's are brilliant, but you'll have to find one cheaply and fit the bigger V8 servo and clutch pack. If you are doing drag racing with your Cortina running both with a C4 is a fine idea.
 
What do you do to fix those single rail shifters? One of ours is stuffed, real sloppy change and you have to wire the lever in.
 
I have got one of all alloy jobs, has been in and out of the box a few times now and i havnt had any problems. Those plastic ones are a joke, take them out a few times and the thread goes to shit. I remember the first time mine cam out, i was having a merging lane battle with a vn ss and when i smacked it into third the stick ripped clean out, the passenger at the time pissed himself lauphing, so did the commodore as he cruised past while i was stuck in 3rd.

carnut1100":3ngvoyx8 said:
What do you do to fix those single rail shifters? One of ours is stuffed, real sloppy change and you have to wire the lever in.
 
My old mild 204 204 at 50 cam in my 2502V had terrific grunt from off idle you can get lots of tow cams with less duration than this but in a 250 I doupt its necessary as it will pull like there is no tommorow anyway.
 
xtaxi":3a1oka2k said:
Then fix the stock shifter as per backlash's suggestion. The nylon bits always break.

He's da man. Check posts on this Aussie forum by backlash (Noel).

You can wrap them with fine gauge wire, and cut a new thread on the inside.
 
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