i was wondering how much would this cost me to do the switch fron single to spilt and would my car still pass the somg test in cali

as much as i would cost to get a supercharger off a supercoupe

just contact your local scap yard or call the local mechanic cause prices seriously differ on location

i want to know EXCATALLY what the difference is in split and single port i know kinda but no excact defination


-chad "moontang"

I believe SSM has a kit... although I'm not 100% And yeah you should be able to pass emissions, split port swap doesn't effect smog or emissions. Well at least to the point where it would fail you.

If you are getting it from a junk yard, you could probably get the intakes dirt cheap.
A guy at one of our "U-pull its" offered me everything for about 100 bucks. I wouldn't pay over 150 for everything at a junk yard.
I decided to stay with the single port because I am going to start my M-90 build over the summer. Well, hopefully.

If you really want to do the spilt port swap, I would pick up the manifolds from a junkyard as stated above. And pick up some new heads at SSM for a fairly reasonable price. That would net you some very nice gains. There are several other things needed, but you can use the "Search" function and find loads of information on this swap, including a complete parts list.

It would actually be a better idea to purchase an entire Supercoupe engine and swap that in. You will need a tuner or chip but it will produce more power than a modified splitport swap.

Having done a complete engine swap from a 2000 V6 into the ol 96' I can tell you that I wish I had dropped the SC engine in there. I spent close to 2k on this thing and dont have anymore horsepower than my wifes 93' 300ZX NA with a pacesetter catback.

The difference from the splitport and singleport are that the heads have 2 intake runners going to the intake valve while the single port has 1 runner. The upper and lower intake manifolds also have split runners totaling to 12 runners instead of 6 on the singleport.

The splitport outflows the singleport on the intake side but the exhaust side on the singleport flows more unless you do some extensive porting.

The single port has a single plenum as well while the splitport has two small plenums.

In 2001 Ford introduced IMRC's to help bolster torque figure below 3200rpms.

There are a couple different versions of splitport intakes but the heads remain about the same with slight casting variations that I really dont know much about because they are not big enough to care about.

i wanted the m90 but aguy from anther mustang fourm told me i wouldnt pass smog bcuz its older than my car or something

its a stock set up
from a supercoupe it should pass just fine

Just out of curiousity how can u tell if you have a single or split port? I have a 04 3.9L

1994-1998 v6's have the singleport motor.
1999-2004 v6's have the splitport motor.

cool thanks

so the m90 should pass that make me happy lol i was sad that i couldnt do that

well do supercoupes pass inspection
then your car willl w/ it
but im wondering if its all in the exhaust

yea he said it was becuz its from an older car than mine is