Good vid thx, 250 xflow are underrated IMHO. I fitted an efi xflow to my f100 as a temporary fit. Changed the dizzy to a non efi type, Holley 2bbl and extractors. It pushes my Effy along really well to the point that 2 years on I'm planning to keep it and not bother with the Barra conversion
I'd definitely stick with the crossflow tbh, it's period correct for the vehicle, they are super reliable, easy to work on and like others have said you can get them to make decent power.
Crane or crow cams will have known performance cams that have been tested and dyno run. When ordering a cam for the profile you want ie where you want your power to be?. The cam will come with performance upgrade recomendations ie roller rockers, or high comp springs etc, Porting of head and what size intake and pistons and what type of pipes. To get good street power its best to probably start at the cam and let that dictate the rest of the build.
Back in the day I used to love hotting up the 250xflows. Camtech do a good hydraulic 230@050" duration with the factory C2 heads... highest compression head. Getting compression up around 10:1 with that camshaft, new Valve springs, collets & retainers, C2 head 98bp ultimate, and a well tuned 4barrel 465/600holley on an aussiespeed alloy manifold. The Honda inspired alloyhead actually flow about 320hp standard. The standard 86ulp xf 250xflow came out with a 97kw motor @3600rpm flywheel. Hence the tractor name tag they inherited. Getting power up to 180hp+@wheels and they motor nicely. Torque monsters.
@@OzGeneralStore The specs say it all. Low revs for peak HP and Torque and long engine life. Given the head design is more modern than a Holden red/black or Valiant straight six, compression, cam and carbs with associated rocker gear, one should make some reasonable power out of it. They are not exactly a "weak" motor.
I had a GL XD Falcon and a XD Fairmont. The GL was Tbar auto and Fairmont column auto. The GL had better pickup due to the diff. But Fairmont beautiful cruiser. Both crossflow 4.1 not as much power as Chrysler hemi or Holden 253. But very reliable never let me down.
Subscribed because of the Val in the back Just finished completely recoing my 265 Regal. Kept it original crystal Torquise on the outside with beige vinyl because the colour is rare af. But I changed all the disgusting brown on the inside to pastel Torquise and I'm painting the brown crash pad beige like the doors. My grandfather looked after this car right up until he died, I'll do the same. Picked up an 86 XF sPack ute for 400 bucks the other day, which is why I am here, I was going to chase up the turbo barra for it, but the crossflow sounds mean with a stage 1 performance cam, so I'll give that a burl until I need more......
Im def a V8 guy - but the XFlow has had its day now. The Barra is def better engineered and certainly stronger in regards to many using stock internals for 10sec passes. In saying this, there wouldnt be a Barra, if there wasnt a XFlow.....good ol blocks! My old one went perfect with regular oil changes over 500,000km
The 250 crossflow isn't dead yet. th-cam.com/video/gSzkrWlIQv0/w-d-xo.html th-cam.com/video/bQOwafnE3oE/w-d-xo.html th-cam.com/video/MEnGVDS_NNE/w-d-xo.html
Good vid mate, that cross flow with air con and power steer is becoming a more sort after item especially freshened up, many are sticking with the factory six for originality and they make decent power with some head work, carby and cam so not the best but not the worst thing either and far far cheaper than a Barra or V8 conversion? Still luv the roar of a good Clevo though!! 😂😂👌👌
There only over fuelled if you use too big sized jets in the carb, if using the correct sized carby. If the carb is to big it will actually flow less fuel cos the engine can't create enough signal to pull more fuel thru it.
HP is not everything , HP was changed from gross to net in the late 1970s , one year a ford 7.5 litre 460 big block was rated at 335 HP next year's same engine rated under net power 120 HP .
Good vid thx, 250 xflow are underrated IMHO. I fitted an efi xflow to my f100 as a temporary fit. Changed the dizzy to a non efi type, Holley 2bbl and extractors. It pushes my Effy along really well to the point that 2 years on I'm planning to keep it and not bother with the Barra conversion
I'd definitely stick with the crossflow tbh, it's period correct for the vehicle, they are super reliable, easy to work on and like others have said you can get them to make decent power.
Crane or crow cams will have known performance cams that have been tested and dyno run. When ordering a cam for the profile you want ie where you want your power to be?. The cam will come with performance upgrade recomendations ie roller rockers, or high comp springs etc, Porting of head and what size intake and pistons and what type of pipes.
To get good street power its best to probably start at the cam and let that dictate the rest of the build.
My ‘78 XC falcon 500 had a 350 Holley and a set of extractors and it kept up with my mates VK every time
Back in the day I used to love hotting up the 250xflows. Camtech do a good hydraulic 230@050" duration with the factory C2 heads... highest compression head. Getting compression up around 10:1 with that camshaft, new Valve springs, collets & retainers, C2 head 98bp ultimate, and a well tuned 4barrel 465/600holley on an aussiespeed alloy manifold. The Honda inspired alloyhead actually flow about 320hp standard. The standard 86ulp xf 250xflow came out with a 97kw motor @3600rpm flywheel. Hence the tractor name tag they inherited. Getting power up to 180hp+@wheels and they motor nicely. Torque monsters.
Such a good comment, cheers!!
@@OzGeneralStore
The specs say it all.
Low revs for peak HP and Torque and long engine life.
Given the head design is more modern than a Holden red/black
or Valiant straight six, compression, cam and carbs with associated
rocker gear, one should make some reasonable power out of it.
They are not exactly a "weak" motor.
320hp stock??? GTFO.
@@mex351 the Honda inspired C2 heads flow great standard yes. 280-320hp from memory unported. Cheers
What makes it a crossflow is simply the head, intake on one side, exhaust on the other, period.
people sleep on the pre barra falcon sixes for some reason, they have almost as much potential and some parts are interchangeable
Well explained. Can replace half of TH-cam engine vids with this one. Well done 👌🏾
I had a GL XD Falcon and a XD Fairmont. The GL was Tbar auto and Fairmont column auto. The GL had better pickup due to the diff. But Fairmont beautiful cruiser. Both crossflow 4.1 not as much power as Chrysler hemi or Holden 253. But very reliable never let me down.
Just rebuilt one at 17 got me into cars bloody love it
The torque power they make and can make is good
You can abuse them to no end
World class motor
A 250 with a bigger cam and a bigger carby is not bad. 2nd gear burnouts and 6.7 second 0-100kph in an xf falcon.
On the other continent, is the bara able to be mounted on a standard USA ford L6
Can i just throw in a mild cam? ... i have the 4.1L alloy head weber carby. Standard 250 c/flow
Subscribed because of the Val in the back
Just finished completely recoing my 265 Regal. Kept it original crystal Torquise on the outside with beige vinyl because the colour is rare af.
But I changed all the disgusting brown on the inside to pastel Torquise and I'm painting the brown crash pad beige like the doors. My grandfather looked after this car right up until he died, I'll do the same.
Picked up an 86 XF sPack ute for 400 bucks the other day, which is why I am here, I was going to chase up the turbo barra for it, but the crossflow sounds mean with a stage 1 performance cam, so I'll give that a burl until I need more......
She got a Holley adapted ona 👌
The old 250s run great with a 350 Holley 👍
Im def a V8 guy - but the XFlow has had its day now. The Barra is def better engineered and certainly stronger in regards to many using stock internals for 10sec passes. In saying this, there wouldnt be a Barra, if there wasnt a XFlow.....good ol blocks! My old one went perfect with regular oil changes over 500,000km
To get the efi 250 to go quicker replace the VAF meter with a map sensor, ecu harness and ecu out of a mpfi ea 6cyl.
@@craiglarnach9077 Never heard about that before, its amazing how much parts can be used between the Ford sixes.
The granddaddy of the Barra.
The 250 crossflow isn't dead yet.
th-cam.com/video/gSzkrWlIQv0/w-d-xo.html
th-cam.com/video/bQOwafnE3oE/w-d-xo.html
th-cam.com/video/MEnGVDS_NNE/w-d-xo.html
The adapter on the intake isn't stock, probably had a holley or something at one stage on it vs the standard weber
Good vid mate, that cross flow with air con and power steer is becoming a more sort after item especially freshened up, many are sticking with the factory six for originality and they make decent power with some head work, carby and cam so not the best but not the worst thing either and far far cheaper than a Barra or V8 conversion? Still luv the roar of a good Clevo though!! 😂😂👌👌
There only over fuelled if you use too big sized jets in the carb, if using the correct sized carby. If the carb is to big it will actually flow less fuel cos the engine can't create enough signal to pull more fuel thru it.
What ya doing with power steering bracket can i buy of ya ?
250 x flow 👌
Ford and reliable is not correct.😂
So split the difference and SOHC for the win? 🤔🤷♂️
100% a good AU motor in X series is a cheap easy upgrade.
Wuhan war whistle 😂😂
So big yet produced so little power
Its only 4.0L wtf you talking about??
@@jrburger95it's 4.1 litres
HP is not everything , HP was changed from gross to net in the late 1970s , one year a ford 7.5 litre 460 big block was rated at 335 HP next year's same engine rated under net power 120 HP .