[specialblendj]

What all must one do to add a new fuel injected 289, into a 1965 mustang. Would you need to replace the transmission/ drivetrain components? What about engine mounts? Also how hard would it be to add in a new 5 or 6 speed transmission. And how hard would it be to convert the rear leaf springs into rear independent suspension?

[wilit]

Wow. Where to start.

They don't make "new" fuel injected 289's. The 289 is a pushrod motor. The 4.6 litre (281 cubic inches) motor that comes in new mustangs is a SOHC engine, meaning no parts will interchange. The 4.6 WILL NOT FIT into any 60's Mustang without the removal of the shock towers. 5 or 6 speed tranny swaps are easy. Just buy a kit, it'll be easier than trying to piece one together. There is a company that makes an IRS retrofit kit for early 'Stangs, but it's not cheap.

[rodbender]

A 5 liter (302) will fit however.Just use the computer, harness, etc. from a pre-95 donor car. There is plenty of info on these swaps. I just seen a 65 with a fuelie motor in it last weekend. Also the five speed will work too. The AOD is bigger than the C-4 so you may have to bump the trans tunnel. Get a Mustangs Unlimited catalog. Everything you need is in there. Mounts ,etc. Good luck!

[Acooljt]

You can make a fuel injected 289. It's the same thing as a 302, so if they have a 302 FI setup, it'll work for your 289.

[MustangBIlly]

I wanna drop a 3.8 v6 into my 65 with the i6 any suggestions or comments

[gcroix]

Holley Pro-Jection Fuel Injection Systems may be something that will work for you. Be aware that a 5.0L has the same exterior dimensions as a 289, but on the inside they are different. So when someone says, 'it's the same thing as a 302,' that's not always true. You could replace the carb with a fuel injection system on your 289, but it may not have all the electronics as a early 90s EFI engine. I put a 5.0L/AOD in my 66 and I love it. You can put the EFI components from a 5.0L onto a 289, it has been done. But if you're going to spend the time/money to do it, I'd go all the way with total EFI, computer controlled ignition and all that. The C-4 will bolt onto the 289, or you can put a AOD trans behind it. The AOD will go right into your car, just trim the front yoke one inch.

[.boB]

It really just depends on your budget and goals. You can spend a bunch of dough putting a supercharged 5.0 DOHC mod motor, 6 speed, IRS, big brakes, etc. It's been done many times before. But, it's big bux and a lot of work. For the average garage guy, it's a year or more to completion.

Or, you can keep your current engine/trans, and simply add a good EFI system like Mass-Flo. Relativly inexpensive, and can be done in a week end.