[str8pipes]

I have a 65 mustang with a 200 6 cylinder. anyways the carb is junk. i would like to replace it with a bigger better one etc.. but u cant replace the intake because its built into the head . any ideas ?

[ReverendDexter]

Yeah....

I haven't done too much research into this, but my understanding is that you're pretty much screwed, lol.

You can mill off the intake manifold and have a different one put on there that will allow for a better carb setup (triple weber sidedrafts would be cool), or you can go to fuel injection (maybe).

You might also be able to find a different head for the motor (maybe off a 250 or a 300).

Good luck with it man.

[460brevill]

go to www,classicinlines.com.they offer an adapter plate to put a 2 v carb on your engine.you can do anything if you want to.

[BA Mustang]

If you use the clifford 2v adapter you can get the Holley/Weber 2v carb from langdon's stovebolt.

The CI adapter is for carbs like the Holley 350cfm 2bbl.

[460brevill]

use the 250 head.has a bigger log runner for more air flow and bigger valves.76 granada 250 is good.300 will not work.

[sneakygt91]

with the 250 head, don't you have to perform some mill work? I have heard that it involves a lot of machining to get it to work properly.

[460brevill]

no muss no fuss.direct bolt for bolt hookup.same bolt pattern and torque.

[str8pipes]

i like the idea of using the adapter plate thats cool. and thanks for the site. but next step is what carb should i use with the adapt.? and where should i get it ? i know u can only fuel an old six so much before u defeat yourself . and i have no clue what i should be looking for. i have never tried to make a 6 cyl. "run good" before. hey any ideas are useful. thank you.

[BA Mustang]

If you use classic inlines adapter go with a Holley 350cfm 2bbl.
If you use clifford adapter go with Holley/Weber 2bbl.

[sneakygt91]

Ok, 6 cylinder performance guys. So far, I have a clifford header leading to 2.5'' exhaust with flowmaster 40 series mufflers, flexalite fan (for the hot summers), and pertronix ignition. I just spent a sh*t ton of money on a ponycarbs Autolite 1100 to make the car run smoothly. I am seriously considering throwing on the 250 head (I found one in really good shape) and switching to a two barrell carb. It is worth it? Will drivability suffer? I just want a car that is fun to cruise in, but has enough power to get down the interstate with ease. Let me know what you think. Thanks in advance.

Mike

[460brevill]

go to the site i listed ABOVE.get a cam and use the 350cfm BA MUSTANG suggested.you will see a big diff.

[str8pipes]

i also have a 289 under the bench. but i have been told the suspension and the 4 bolt axels can't take the stress ? as far as the weight the v8 can't weigh but a couple hundred pounds more . but ive been warned so there must be a reason. and off topic maybe replacing the 6 cyl. would take from the value. i dont know. just want a more responsive ride. so give me some ideas. thanks.

[AtlantaSteve]

the i6 and v8 have different steering components, including spindles, tie-rods, centerlink, idler and pitman arm. The coil springs for the v8 are beefier to hold up that motor, and the 4-lug axle and brake system is different. And the Rear end is different.

You CAN keep the tie-rods, centerlink, idler and pitman IF you go with the CSRP Swap kit #2 from discbrakeswap.com. that will upgrade you to beefier spindles, with 5 lug Disc brakes. You will still need to replace the front springs and the rear-axle, though.

The Upper and Lower control arms for the 6 cylinder and V8 are the same, so you can leave those alone...though if they are older, they might require some inspection and freshening anyway. I recommend a new LCA, Upper Ball Joint, and Moog UCA Shaft Kit.

you're probably looking in the 1k - 1500 range BEFORE you build and install the motor, depending on how well you source your parts

[sneakygt91]

so how big of an increase in power am i going to see by simply replacing the stock head with a 250 head? and will this run ok with the stock carb and my previously mentioned mods?

[460brevill]

it will run fine.dont look for a big increase without carb.

[My66]

Do you have to machine the intake manifold before using an adapter plate?