ok, so i've got a 1994 V6 manual tansmission 3.8L mustang with OBD-II. i've been reading and doing research on making it a 4.2/4.3L engine, and have finally decided that instead of taking the car to the shop and having them take apart my engine and rebuild my lower end and machine things and such, i will just buy a shortblock or complete engine from superix motor sports themselves.

i would like to know if anyone has tackled this project and what kind of experience they've had.

 

I'm plannin on doin the same thing eventually. I've heard a hell of a lot of good things about their 4.3 crates. 550 horses FTW : D

 

yeah man. i have a set of intakes, so i may just get the short block and get a cam and heads from them seperatly.

 

If your talking about doing the split port swap, assuming you would go with the better flowing heads/intake of the 99-04 cars, then I have done the swap on a friends car. Its a pretty straight forward swap with some wiring that needs to be done and the fuel line has to be modified to work with the split port intake manifold.

 

i'm actually talking about a full engine swap, using some ported intakes from a 2002 3.8L and a 3-valve job heads and a new cam.

 

I understand that I'm asking if you will be doing the split port swap as well or keeping it single port. Regardless I've done it and its not bad at all. The motor bolts right up no problem the problems come from the wiring which needs to be modded and have things added etc... to make a split port motor work with the 94-98 cars. You can keep your stock ecu and just mod the engine harness. I do believe (cant remember right now) you use the 99-04 engine harness and it plugs right into the 94-98 plug for its stock harness. Then a tune will of course be needed to get it running very well. You will have to drill a hole to add the 2nd coolant temp sensor into the cars cooling system which isnt a big deal. But like I said it isn't bad just some minor things needed to be swapped over no big deal.

Oh and like i said the fuel rail from the 99-04 doesn't work on your 94-98 car as its a return fuel setup and the 99-04 is returnless. So the rail has to be modded. I did it for a few bucks worth of hose and clamps. You basically use parts of the 94 rail with the 99+ rail. I can go into better once your near that point. Overall its well worth the time to get that extra power.

 

gotcha man, i'm def doing split port swap. at this point i'm leaning toward just getting a new engine built instead of piecing it together, seems easier.