upgrading 2.4T to 3.0

I am seriously considering upgrading. I have found a complete turn-key '78SC engine that includes electronics and I believe the flywheel. I think I will change to the earlier headers/heat exchangers and muffler. Will there be any other things I need to consider?
Any comments will be appreciated.
Regards,

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John Birkett
72'T Targa

John,

I assume that your 72T has got mechanical fuel injection now, and your plan is to convert to the 78 CIS system. An alternative is to set the new engine up with carburetors. If you decide to carburetors on the new engine, the swap will be easier. But, one of your motivations for this swap may be that you would prefer CIS. There is another thread on this board about the merits of carbs vs. CIS. That said, what actually has to be done to get the 78 engine into the 72T?

The biggest task if you go with CIS is getting the fuel from the tank to engine.
You will need a high pressure CIS fuel pump, fuel filter and fuel accumulator, and you will need a return line to send unused fuel back to the tank. If possible, you should get all of this with the engine.

Early CIS systems had the high pressure fuel pump in back near the rear axle. This setup is prone to vapor lock problems, so later CIS systems have the fuel pump in front near the fuel tank.

Does your 72 fuel tank have a fitting for unused fuel return from the engine? If not, you will need to engineer one or get a new fuel tank.

Depending on the cost of solving these fuel system issues, it may actually be cheaper and more fun to convert the engine to carburetors.

If the 72T body does not have an oil cooler up front, you will have to decide if you feel comfortable running the 3.0 liter without it.

You will also need to decide if you want to try and use the heater blower motor that comes with the new engine.

The oil cooler and heater blower issues can be decided after the initial swap is done.
Drive the car without the oil cooler and then decide if it is needed.

The remaining tasks are relatively easy.

- Remove voltage regulator from body
- Upgrade to 6 pin ignition box on body
- Changes to wiring harness engine and body
- Remove air pump and EGR from new engine
- Transfer 72T oil lines to new engine
- Transfer 72T exhaust to new engine
- Upgrade tachometer

Jeff.
74S with 82 engine