header, and manifolds

[BIGBLUE56]

hey guys,

i have a 67 mustang i6 200. it has the original exhaust manifold on it. i was thinking of replacing the stock manifold with the 6 cylinder headers that are at mustangs unlimited. will these help with performance, or are they just for show? while im there doing the exhaust manifold (if i do it), should i replace the intake manifold? both are pretty old and rusty. where would i get an intake manifold? cant seem to fine one.

dan

 

[170-3tree]

That intake is actually cast onto the head and cannot be replaced without major machining and expertise. There are ways to modify it for more carburetion as many on this forum have done.

As for the header, it will improve performance, but there is a vast debate about how much or how little just the header will do. Many people don't feel much improvement, while some do, but it is common knowledge that at the very least, it sounds better and does tend to improve gas mileage when paired with a free flowing exhaust system on on an otherwise stock engine.
Gerald

 

[bubba22349]

On the these little Ford six's the intake is part of the head that why you can't find one.

 

[BIGBLUE56]

thanks for the info on the intake. it would have been frustrating trying to get that off. as for the headers, i may go with them for the little performance, and the fact it looks and sounds better.

 

[MPGmustang]

Intake: $285
http://classicinlines.com/proddetail.as ... IMC&cat=31

Head for intake: $1350
http://classicinlines.com/proddetail.as ... D250%2DBRH

Assemebled and ready head + intake: $2095
http://classicinlines.com/proddetail.as ... D250%2DAHP (kit A studs)

Headers: $225
http://classicinlines.com/proddetail.as ... D200%2DDOH


it is possible, there is an intake for the i6 200-250 but you need the head it's made for. price is little high due to manufacturing costs... now it's absolutley worth it if you want to go all out, but for decent performance I would recemend looking into a 2bbl direct mount.

another optional head/intake is the australian combo, I know a member here selling his rebuild i6 200ci with the australian head, headers, cam, and rebuilt c4 trans for $3500, but at that price I would rather go alum head as it's better.

 

[BIGBLUE56]

thank you for all that. i have been looking at a 2 barrel carb into my stock intake using an adapter. i dont have the cash to go all out right now. i just want a little more performance and looks for my ever-dwindling budget. thanks again. i will let ya all know what happens.

dan

 

[bmbm40]

You could get a DSII/complete upgraded ignition system and the larger carb from a 250 for not too much if you shop carefully. The carb would be some work to mount but probably as good as an adapter mounted two barrel overall. I don't have direct experience with this but someone on here did this and seemed pleased. Plus the headers and consider the high lift rockers.

 

[MPGmustang]

best bang for your buck, cheaply...

camshaft, very important in our low flow heads it helps alot
carb, a large 220cfm 1bbl or a 2bbl on a 2-1bbl adaptor in the 240-300cfm range
ignition, more important than exhaust header
exhaust header, helps open it up on the top end.

In that order you will see the most you can get. a camshaft swap is much simpler than it sounds, and once done right the rewards pay for themselves. I have tested a 1bbl vs 2bbl vs 2-1bbl and the 1bbl works if it's 200+ cfm, the autolite 1100's (1101's) don't flow as a well as the carter yf did with a 20 pony difference is a big jump. the 2-1 was a 30pony differnce, and the 2bbl direct was a 40pony difference (so far, still working on some other things) again all with camshaft/exhaust/ignition taken care of.

Learn from my trials, go camshaft then carb then ignition... then if you want exhaust

I say ignition 3rd but in reality it's just as equally important as the carb and recomend them together unless you can go for all 4 and you'll see night and day on your engine.

I think you can do all 4 for $1000 or less and you do all the labor, the most expensive will be the exhaust in the end unless you go direct mount 2bbl.

Either way Good luck and keep us updated.

 

[rbohm]

8) with the small six, you have to take a complete systems approach to building a string street engine. that means all the parts you put together have to compliment each other. small tube headers do help through out the power range, but do work much better when coupled with an upgraded cam and induction system. so add a two barrel carb, or three one barrel carbs, a moderately larger cam, the small tube headers, do some head porting, install larger valves, etc. and you too can build a strong street engine. just be conservative in your parts choices, meaning dont go too large on the two barrel carb, or the cam, etc.

 

[170-3tree]

I am going to suggest you phase your approach by
1) what is needed;
2) your budget.

If you need an exhaust now, build it for your end result, it won't be up to its full potential right when it happens, but will help a bit. If you plan something for intake, in the future, hold off till you can afford what you really want. Ignition is always first on the list after all the things that NEED to he done are done.
This is just the experience of a broke college kid talkin. And doin this has made me a thousand times happier than upgrading to something halfway to what I KNEW would be the end result and brought the end result to me in far less time.

 

[BIGBLUE56]

i have my igintion upgraded already to a pertronix ignition upgrade. i never thought of the cams, but i will look into them. right now ive been looking into a 2bbl carb and adaptor. which is the best one to install?. then after all that i may ugrade the exhaust. have any of you put one on? goods, bads, do's, dont's? i still have the stock starter and alternator. they work. should i upgrade those as well...or is it a if it aint broke...dont fix it type of deal? heres what i upgraded since i got it last year.

new autolite 1100
fuel tank
fuel lines
fuel pump
distributor single vac advance rebuild
atlernator ,starter, batt cables
starter solenoid
valve cover
air cleaner
c4 rebuilt

 

[Explorer]

i have my igintion upgraded already to a pertronix ignition upgrade. i never thought of the cams, but i will look into them. right now ive been looking into a 2bbl carb and adaptor. which is the best one to install?. then after all that i may ugrade the exhaust. have any of you put one on? goods, bads, do's, dont's? i still have the stock starter and alternator. they work. should i upgrade those as well...or is it a if it aint broke...dont fix it type of deal? heres what i upgraded since i got it last year.

new autolite 1100
fuel tank
fuel lines
fuel pump
distributor single vac advance rebuild
atlernator ,starter, batt cables
starter solenoid
valve cover
air cleaner
c4 rebuilt

Question: Did you rebuild the LOM distributor or change to the 68 later style vacuum/centrifical advance distributor?

 

[BIGBLUE56]

Bought a rebuilt 67 from MU. Added pertronix ignitor. Another question on adding the 2 barrel. Classic inlines offers an adapter for a 2v autolite. MU sells what they call the Ford 2100....is that the autolite 2v? How different will the linkages be? Or will my stock 1v linkage work? Anyone have this?

 

[MPGmustang]

the stock linkage usually does not work for any 2bbl mod... I ended up using a lokar pedal and cable for $175 cause it was quick and easy.

Pertronix is good with the later distributor, you are running the vacuum off the manifold and not the carburetor right? I hope so,now the only difference between the DSII and your's would be the type of mech advance and wire sizes... someone correct me if I'm wrong, but with the Pertronix isn't it safe to say you have something comparable to a DSII?

I'm still using the stock starter on my 200, the mini starters are 'nice' but no needed. the alternator I found a 100amp 3 wire on eBay, bolts in and still retain my 3 wire and dummy light.

if it's not broke (yet) don't fix, I usually upgrade when it's most convenient or inevitable, even if it's still works.

I like classicinlines adapter, used it myself and am impressed with it. I recommend their adapter.

Classicinlines also sells the 2bbl autolites, I recommend calling Mike @ classicinlines to get one from him. he might have a rebuild-able one on hand, I know he's a re-seller for them too.

the cam will make a bigger difference if intake/carb has been taken care of.

 

[CobraSix]

MPG is right.

Honestly, best bang for buck (if you do the work yourself) is the cam upgrade. It's relatively simple, though with the I6 can be a pain if you do it in the car due to having to remove the radiator to have enough room. But outside the coolant, head gasket, and head bolts, it's a pretty simple and cheap job. Even when I ran a new cam on a log head, made a world of difference.

And yes, while the pertronix is very similar in performance to the DS2, As mentioned in other posts, the LOM still needs a recurve to get the most out of it. Definitely talk to FalconSedanDelivery about it or a local race engine builder if they know what they are doing.

I'm still using the stock starter. Sure, not fancy...but it works.

I'm like MPG, I replace things as I'm there. Though sometimes that leads to long projects. What started out as a simple brakes upgrade ended up for me with a full V8 steering and disc brake set up in the front, V8 T5 transmission, and 8" rear end. I'm worried where my current EFI project will end up at. It's already put a Xflow 250 in my garage and leaving me with debates about what to do with it and my current 200.