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Crossflow 250 Head Swap

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paulstegall
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Crossflow 250 Head Swap

Post #1 by paulstegall » Wed Jan 09, 2019 12:14 pm

Hey - i'm new here, but I was wondering what modification is needed for an Australian crossflow 250 head to fit on a US 250 block? I know it's possible, just not sure what I need. Thanks -Paul
Red 1966 Ford Mustang Coupe
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rbohm
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Re: Crossflow 250 Head Swap

Post #2 by rbohm » Wed Jan 09, 2019 12:54 pm

here you go;

ci/XFheadswap.html

you can find it by clicking on the tech archive link and searching for the crossflow head swap link.
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chad
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Crossflow 250 v Oz 2V

Post #3 by chad » Wed Jan 09, 2019 1:12 pm

there was a huge evolution (ie 14 different models '60 - '79) between models (10/'70 XY, X-A, X-B,X-C) till when the '80 alu x-flow was developed. Many here use the "Oz 2V" head as it is easier to adapt to our motors (rocker assmbly, VC, headers all fit). The Oz cross flow itself needs an adapter plate bolted up and is not a direct match.

VI dot com (1 of our members, Matt) has followed up w/an alu x-flow being currently cast for a direct fit to the USA falcon i6 engine. The developer, Mike W, also developed this (ford6) on-line site.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Crossflow 250 Head Swap

Post #4 by paulstegall » Wed Jan 09, 2019 1:33 pm

thank you both for the information! :thumbup: :thanks:
Red 1966 Ford Mustang Coupe
-Factory 200 car
-250 in-line 6 swap (1976 Maverick)

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Re: Crossflow 250 v Oz 2V

Post #5 by bubba22349 » Wed Jan 09, 2019 2:56 pm

chad wrote:there was a huge evolution (ie 14 different models '60 - '79) between models (10/'70 XY, X-A, X-B,X-C) till when the '80 alu x-flow was developed. Many here use the "Oz 2V" head as it is easier to adapt to our motors (rocker assmbly, VC, headers all fit). The Oz cross flow itself needs an adapter plate bolted up and is not a direct match.

VI dot com (1 of our members, Matt) has followed up w/an alu x-flow being currently cast for a direct fit to the USA falcon i6 engine. The developer, Mike W, also developed this (ford6) on-line site.


:shock: Well Except for just one thing! The Australian 2V head plus the Aluminum 2V head (based on the Oz. 2V head) that Mike developed and still continues on today as the V. I. Aluminun 2V head. These are not an X (or Cross) Flow head they are U Flow heads i.e. The intake and exhaust are both on the same side. :nod:
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I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Crossflow 250 Head Swap

Post #6 by chad » Wed Jan 09, 2019 3:45 pm

"... intake and exhaust are both on the same side..."
o0OP, granted. Sorry. I lump em all together as 'out of reach 4 me" ($).

I still recommend the:
"...Many here use the "Oz 2V" head as it is easier to adapt..."
C costs v flow bench results on CI archive.

Thnx 4 the correction bubs !
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Crossflow 250 Head Swap

Post #7 by StarDiero75 » Wed Jan 09, 2019 5:51 pm

It really doesnt look like its uber difficult. Not easy but it definitely looks like something anyone whose a little daring could do.

Anyone know what shipping is roughly from Australia for that head? This is something I'd definitely consider.
--1965 Ranchero w/1966 200 and 3.03 column shift, 8" rear 2.8 (Yes I know the gearing sucks), 1968 1.08 Autolite 2100 with VI adapter, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

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Re: Crossflow 250 Head Swap

Post #8 by chad » Wed Jan 09, 2019 6:19 pm

StarDiero75 wrote:Anyone know what shipping is roughly from Australia for that head?

ask Jack (in Fla) our member who did that. Isint it his article U looked @?
Last edited by chad on Wed Jan 09, 2019 9:30 pm, edited 2 times in total.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Crossflow 250 Head Swap

Post #9 by paulstegall » Wed Jan 09, 2019 8:01 pm

StarDiero75 wrote:Anyone know what shipping is roughly from Australia for that head? This is something I'd definitely consider.


I'm not sure, but I might have one shipped from overseas, that's why I was asking .. let me ask and i'll get back to you
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Re: Crossflow 250 Head Swap

Post #10 by CNC-Dude » Wed Jan 09, 2019 9:14 pm

StarDiero75 wrote:It really doesnt look like its uber difficult. Not easy but it definitely looks like something anyone whose a little daring could do.

Anyone know what shipping is roughly from Australia for that head? This is something I'd definitely consider.

I've purchased several Crossflow heads before from Oz. Shipping is a little over $300. There is no method cheaper than that.
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Re: Crossflow 250 Head Swap

Post #11 by rocklord » Wed Jan 09, 2019 9:38 pm

The cam for the US 250 will not work, so you will also have to purchase a Crossflow cam.
If you're not good at fabricating, you will also have to purchase an intake and exhaust manifold.

A Crossflow head is just under the weight limit before it gets really expensive.

I wanted to ship a Crossflow crank from Australia, but it was over $400.
Didn't want it that bad.
Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
1961 Corvair Lakewood wagon, 145CID, 80HP, 2Spd Powerglide Auto.
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Re: Crossflow 250 Head Swap

Post #12 by rocklord » Wed Jan 09, 2019 9:41 pm

Also the valve cover for the US 250 won't work on the Crossflow head, so if you can't fabricate one, there's another expense.

You'll also need a head and valve cover gasket.
Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
1961 Corvair Lakewood wagon, 145CID, 80HP, 2Spd Powerglide Auto.
2017 BMW X3, 3.0L Dual Turbo, 300HP, 8-Spd Auto

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Re: Crossflow 250 Head Swap

Post #13 by KYMav250 » Wed Jan 09, 2019 10:15 pm

After all the parts and pieces cost ends up being similar to a Barra.

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Re: Crossflow 250 Head Swap

Post #14 by StarDiero75 » Wed Jan 09, 2019 11:31 pm

So I would think the head is probably the single hardest/most expensive piece to get. Everything else can be gotten through Aussie Speed Parts. They might get a better deal shipping for the cheaper stuff like intakes, headers, and valve covers.
--1965 Ranchero w/1966 200 and 3.03 column shift, 8" rear 2.8 (Yes I know the gearing sucks), 1968 1.08 Autolite 2100 with VI adapter, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

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Re: Crossflow 250 Head Swap

Post #15 by StarDiero75 » Thu Jan 10, 2019 12:29 am

Guys,

This looks like someone made a DOHC work on a 200 using the crossflow DOHC head. The block doesnt look like it fits the block naturally, which is making me think this is our 200. Look at all the bolts and crap of where our stuff is. This is one nasty build if so. And the sound is godly.

https://youtu.be/qDqAxiJKBO8
--1965 Ranchero w/1966 200 and 3.03 column shift, 8" rear 2.8 (Yes I know the gearing sucks), 1968 1.08 Autolite 2100 with VI adapter, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

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Crossflow 250 Head Swap

Post #16 by chad » Thu Jan 10, 2019 2:35 am

(bottom line is Y Mike came up w/the Classic Inlines alu head)
Last edited by chad on Thu Jan 10, 2019 11:38 am, edited 1 time in total.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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Re: Crossflow 250 Head Swap

Post #17 by rocklord » Thu Jan 10, 2019 9:43 am

KYMav250 wrote:After all the parts and pieces cost ends up being similar to a Barra.


If you could get one.
Right now it's not legal to import a Barra engine into the US and run it on the highway.
You can import one if used off-road, for racing, or for research.
Any engine 25 years of age or older can be imported, the same as 25 year old cars.
Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
1961 Corvair Lakewood wagon, 145CID, 80HP, 2Spd Powerglide Auto.
2017 BMW X3, 3.0L Dual Turbo, 300HP, 8-Spd Auto

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Re: Crossflow 250 Head Swap

Post #18 by rocklord » Thu Jan 10, 2019 10:21 am

StarDiero75 wrote:Guys,

This looks like someone made a DOHC work on a 200 using the crossflow DOHC head. The block doesnt look like it fits the block naturally, which is making me think this is our 200. Look at all the bolts and crap of where our stuff is. This is one nasty build if so. And the sound is godly.

https://youtu.be/qDqAxiJKBO8


That head was actually developed by an Aussie guy named Bob Krogdahl. It took him 20 years to design, refine and build this DOHC, hemispherical, crossflow design twin spark plug cylinder head. It could be installed on either the Ford pre-crossflow, or Holden 6 cylinder engine since they both had the same 4.080" bore spacing. Here's a write up on the Aussiespeed website:
http://www.aussiespeed.com/krogdahl-cylinder-heads/

Here's a video of one on a Holden engine:
https://www.youtube.com/watch?v=JoS_yYmpxpw

If you look at both videos, you'll notice the intake and exhaust manifolds are on opposite sides of the Ford and Holden engines. The head was designed so the cams and gears could be flipped end to end depending on which engine it was installed on.

If you search the internets, there is a video of an Australian Ford alloy Crossflow head installed on a Holden engine. The head is switched and heavily modified to fit on the Holden six.
Dan

Currently Own
1965 Mustang, 200CID, 3Spd
1964 Corvair Coupe, 164CID, 140HP, 4Spd
1961 Corvair Lakewood wagon, 145CID, 80HP, 2Spd Powerglide Auto.
2017 BMW X3, 3.0L Dual Turbo, 300HP, 8-Spd Auto

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Re: Crossflow 250 Head Swap

Post #19 by powerband » Thu Jan 10, 2019 10:36 am


... developed by an Aussie guy named Bob Krogdahl. It took him 20 years to design,... It could be installed on either the Ford pre-crossflow, or Holden 6 cylinder engine ... intake and exhaust manifolds are on opposite sides of the Ford and Holden engines. The head was designed so the cams and gears could be flipped end to end depending on which engine it was installed on.


Krogdahl Head fit Ford and GM (Holden) applications ,that is really something impressive and noteworthy.

have fun
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Re: Crossflow 250 Head Swap

Post #20 by StarDiero75 » Thu Jan 10, 2019 4:23 pm

That is a custom built hemi head? That is so sick i can't believe it. I can't stop replaying that video. It sounds so mean
--1965 Ranchero w/1966 200 and 3.03 column shift, 8" rear 2.8 (Yes I know the gearing sucks), 1968 1.08 Autolite 2100 with VI adapter, CRT Performance HEI.
--1961 Studebaker Lark VI, OHV 170 l6 in the process of being resurrected. But it lives
--Creator of the only Weber 32/36 conversion video.

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