advice to wisely install 250 2v on 66 mustang.

[dawnovsky]

Hi n merry Christmas to yall.

As i m living close to australia I ve found a good deal on a 250 2v recently.
i intend to install it on my 200 1966 mustang, as 250 2v mod seem to best the best upgrad ever for the buck on a 200.
what would be your advice on doing this.
as the head is going to be really accessible before installation i m thinking about recondionning it (valves, springs, rockers etc ...)
my engine is all sock (except pertronic) and i m not intending to have any race driving with it. + the car is and will stay a daily driver and it had to remain legal (witch mean as stock as possible for European regulation applicable here). I won't upgrade to disc brake anywhere soon, so i m really looking for huge horsepower increase, but mainly for drivability and fuel efficency.

so
what type and model of valves/springs/rockers/rods/lifter should i install?
do i have to change my ignitor (66 mustang stock autolite)?
any good suggestion for cable conversion or throttle rod modification?
a good carb for it ( Holley 350 / weber 32/36)
any other suggestion (oil pump, gasket , header ?? i have a falcon headers, will it fit the mustang or is it to big ??...)??

thanks in advance
regards

f.

 

[bubba22349]

You should look in this section of the site on the australian engines. Good luck
viewforum.php?f=3

 

[MPGmustang]

Merry Christmas Indeed

what kind of 250 2v is it? a cross flow or regular? the older heads (intake and exhaust on the passenger side) are inter-swapable with the american log head. the Aussie cross flow needs mod's and changes so oil and water don't mix... it has been done with the engines Link or just the head Link

According to the engine swap the carbed x-flow sits 1 inch lower than a US250 in a 66 mustang, and the EFI x-flow sits 2 inches lower than the US250, I also beleive the aussie cast head with the Intake exhaust on the same side do sit lower than the US200 log setup. in the end I believe you should be alright on clearance.

Any setup is better than the log head, although a cleaned up larger log head flows just as good as a stock Aussie head. the x-flows... well just flow better period. in the end more flow more torque and more HP = better mileage (to an extent of keeping off te pedal )

In the end there is really what you would like to do and what you want in your car. Good Luck and keep us updated on progress

 

[dawnovsky]

thanks for answers.
the head i intend to install is a pre-crossflow (ardide 6049ac).

 

[MPGmustang]

as it is interswapable...
Stock rocker arms or some aftermarket from CI will work
1.75 intake/1.5 exhaust (these are the largest that fit in these heads)
302 springs (IF you have a better cam, if it's stock then stock springs are fine)
stock hydrolic lifters unless going with a solid cam
holley 350 is perfect for these engines, but if you wanted more umph maybe a 4bbl intake?? a 400 CFM as max
stock oil pump, there is no High Volume oil pump for our six's
any stock gasket will work, but the intake gasket I guess would be a special order
pertronix worked great for me on my engine before i got my DUI, I think it's more reliable too... IMO
if your distributor is the LOM then you might want to upgrade at least to a DS1 or DS2 as the vacuum advance is meant only for the autolite 1100 SCV

 

[dawnovsky]

Hi,
thanks for this info.

when you mean stock spring, lifter etc ... , do you mean stock 200 ford parts like those i can get from Mustang unlimited ??
I m close to australia, but i m much more familiar to US engine, parts and dealers...
where are 1.5/1.75 valves available ?
what about roller rocker arm?? some kit are available, but i m not sure it really usefull on a daily driver street car?
are all 200 /2502v part interswappable ?
I have all equipement and assistance possible for a complete rebuilt here, but all parts will have to be odered from oversea as nothing available in new caledonia for those engines (New caledonia is a french island mainly having french /European and japaness car)
the guy i get the head from leave it to me with the manfold and the carb that came with. A stromberg ww i guess from the picture.
Don't know anyhing about this carb, never work on it and have no idea how it run. Is it a good one? Can i keep it for a while before a get a decent holley350 to rebuilt on ebay.

About the distributor . I have the stock one that came with the 200 and the autolite 200 carb with vaccum port and spark control valve.
I ve heard about people swapping carb on 200 and keeping the stock ignitor (connecting the vaccum line of the carb directly to the manifold (or carb spacer on a log head 200). I wander if this setup will ever work and make the engine run?

many thanks

 

[MPGmustang]

sadly the LOM is made for and with the 1100 with a SCV... if you put a different carb on there you will get horrible performance and gas mileage. not to mention the dmg that "might" occur. think of it like this... you to advacne the spark when you go higher in rpm, "if" it's advanced before hand then your pre-igniting on idle and that causes dmg... same as when you don't have it advanced at higher rpm you are sparking too late and you don't burn all your fuel aka performance loss...

yes ALL US log parts can swap right onto your aussi head mustang unlimited or classic inlines (I went CI as i'm practically neighbors)
valves - CI has a set for IIRC $75 and they are stainless steel
roller rockers- the only ones i know of are through CI... stock rockers are great on my modified engine
yes all 200-250 parts are interswapable except IIRC the water pump, piston rods, crank shaft, timing set... but other than that everything can be switched even the cams
any carb should work if it's in good condition, i'd slap a rebuild on it just incase... I don't know anything about the stromberg ww

you could continue to use your 1100v with your 250 head... might require an adaptor but it's possible... but the best way is to just replace your distributor with one that can run off manifold vaccum.

the SCV controls when the spark occurs, and adds spark under "load" at the LOM... don't mix a LOM with any other carb... but 1100 with SCV with any ignition works just fine. cause that's what i'm doing.

 

[dawnovsky]

Hi,
thanks for the info.

Found this on ebay, new unit, good rate.
what do you think of it. It seems to be vaccum only advance control, no as reactive as mechanical, but supposed to be better for fuel economy.

http://cgi.ebay.com.au/Ford-6-250-2...=AU_Car_Parts_Accessories&hash=item1c170defc3

it have the main advantage of beeing way les expensive than a DUI and way easier to install thana DSII (witch is not hard to install but require wiring modification, and external module installation (not really good looking))

what do you think of it ?
There a lot of AU member on the forum that might have advice about this ignitor.

i guess i can also get one of those remanufactured a-cardone distributor for fairmont 79 (I assume it s reman DSII) from rockauto + ignition module + rotor cap and stuff but i will get me to the same price as htis australian unit
http://www.rockauto.com/catalog/x,carcode,1127595,parttype,7108

regards

f.

 

[gb500]

heres a review of the ebay australia distrubutor :

think it needed a few solder refinements to get soem acceptable operation out of it......:


not sure if you need to log in to see:let us know and i'll c\ut n paste the bits if unable to see.
http://www.fordforums.com.au/showthread.php?t=11289023

 

[MPGmustang]

the ebay dissy is just another version of the LOM... it really sounds like it but with pertronix installed... it's good but requires your SCV

the DS1 (70-78?) has a mechanical advance AND a vacuum advance, example the mechanical advance is actuated by the engine running, more RPM the more the springs release to advance the spark, while the vacuum will advance it more depending on your foot, the mroe vacuum and RPM the sooner it sparks. (IIRC like @48* is the soonest you want) so you initially set it to say 12* and have a 24* mech advance @ 3000rpm and the vacuum depending on desired speed gives 10* more (while maintaining speed with highest vacuum) and that is how you get more economy. if you don't have the mechanical advance your loosing 24* of advance, power, and economy at that higher RPM where its most used.

the HEI DUI modual is just like the DS2 except it's all in one. so if you wanted the performance of a DUI (chevy based) but not pay for it, you would go with a DS2 (ford based) granted the wireing is all over the place but you get the same benefit of performance in the end. try looking in your local junk yard for 78 ford cars and take the ignition and all the wireing for it... I honestly don't know all the parts required but I'm sure someone else could chime in.

Good Luck!