changin 4.6 to 5.0 maybe

lopey4.6 said:

I would stick a 99+ engine in there. The swap is less of a pain and you can reuse the existing wiring harness and accesories. plus you'll have more power to start off with. I would stay away from old technology.

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I agree. I would try to find a used low mileage 99+ engine or rebuild your engine and get some PI heads. Those will be your two easiest options.

But can't you get a whole lot more hp for the money with a 5.0? I know the swap is alot more involved though. Exactly what would be involved?

Wes28376 said:

I agree. I would try to find a used low mileage 99+ engine or rebuild your engine and get some PI heads. Those will be your two easiest options.

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The 99+ already have the PI heads, don't they?

Black96VertGT said:

The 99+ already have the PI heads, don't they?

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Yes. I believe he means replace your motor with a 99+ OR rebuild your motor and do the head swap. If you wanted to do the 5.0 swap, you'd need a K-member from a 94 or 95 GT. Then motor, tranny that has a bellhousing that can bolt to a 5.0. You'll also need computer all associated wiring...yadda yadda. I'm working on putting a DOHC 4.6 in my 88. These are the things I've run into so far. I'm not sure what you'd have to do to your fuel system, or if your speedometer is computer or mechanicaly controlled.

You need to check with emissions if your states lets you do that. Over in chicago, don't quote me though, i heard you can't drop a motor in your car that is older than the one in it.