what things would i need to switch for my v6 3.8 cfi to be sfi without trading motors.:cougarsmily: &:birdsmily:
As a guess, Intakes, harness, injecters, fuel rail, fuel pressure regulater and some free time.
would the ecu have to be changed?
An 87 or 88 v8 wiring harness or 88 v6 wiring harness plus injectors intake, sensors etc. What else do you have planned because you'll only be picking up about 20 horspower or so with this swap? I mean if you're going to convert the harness to sefi why not just throw a 302 in and be done with it?
heres a little guide on how too hook up a v8 harness in an 87 v6 car made by bondo cougar. I have yet to finish my project and test this all out but this worked for him. Come spring I'll be using it to hook up my ho v8.
http://www.filefactory.com/file/f742ec/
Actually this should be put on the site Eric or in a sticky under engine swaps.
I can email it if anyone wants it. that file upload site is kinda scary..........
The ECU will have to be changed.
which v6 tfi or sefi is better for proformance stuff or turbos instead of switching to a 302 or bigger v8. also
would switching to a turbo coupe motor be easier than a v6 to v8?
Both switching to SEFI or a Turbo-4 would require switching wiring harnesses.
Basicaly, no matter what you do involves switching the harness and computer. I had a 5.0 CFI in my car, and you really can't do to much before really getting into it. 5.0 and turbo 4 are the best choice IMO. Turbo 4 would be a good swap. If you ask around, I'm sure you can get info on most if not all of your options.
besides the switch off the harness and ecu would basically everything else beside transmission be the same an link up easy?
besides the switch off the harness and ecu would basically everything else beside transmission be the same on link up easy?
besides the switch the harness and ecu would basically everything else beside transmission be the same on link up easy?
I went to carb and everything still works. So I'd say yes.
will a v6 tranny work with a 302 v8? since i know that a turbo coupe motor wont fit up to a v6 tranny.
What tranny is in it ( sorry not a V6 guy).
You've got an AOD, and yes, it'll bolt to either a 5.0 OR 3.8
For the work involved changing to SEFI, it'd be more cost efficient to swap in an EFI 5.0, more power, equal-or-better fuel economy, better exhaust sound, and on and on.
Then you have the head gasket problems of the 3.8 to consider, as well.
I think we ALL know the longevity of well maintained 5.0-the one in my 92 F-150 is still runnign strong at 290,000 miles, and it has never been pulled out, just the basic maintenance stuff, water pumps, fuel pump, O2 sensor, and the like.
It has sure as hell lasted longer than the 3.8 in my Tbird.
But, if you want to stay with the 3.8, it can be done, and has been before. Good luck!
The motor in the CVIP is a 5.0 EFI. It has somewhere close to 300,xxx miles on it too. Still strong. If you're going to do the work, i agree that a 5.0 may be eaiser. May we ask why you wana rid of CFI?
Correct me if I'm wrong, but don't the injectors on a SFI go into the heads? That means at least a head change, along with manifold, sensors, ETC. Put a V8 in. Good luck, Fred
I thought they went on a fuel rail but I may be wrong
Yeah, I think Fred is right about the injectors.
Yeah, I'm unsure. I've never acutally seen a 5.0 or done that much work to it. Only normal stuff to them, like routine maintnence
i wanted to get rid of my cfi because i thought sefi would be much better. but from wat it turns out sefi wouldnt help my car very much in horsepower.
For an easy fix, swap a 5.0 CFI onto it. The CFI body itself will help. I have one if need
Getting more power into a 3.8L can be about as expensive as the cost to get even more power from a 5.0L. Using the 5.0 CFI probably won't do much but dump more fuel in and decrease gas mileage. More fuel without more air (heads, exhaust) won't do much to benefit power.
You could to some the CFI mods listed in scott's thread to it to get a few more. Again a 5.0 CFI will get ya a few, but not enough to be worth it IMO.