get a cooling system pressure tester and do a test. that will determine if you have a leaking gasket. Next thing you have to do is find which one is leaking.

 

Found out, that the intake manifold gaskets are blown, 2 pistons are cracked an the left heat cracked!

Think, that it will be better to buy a new engine than rebuilt this one and a new transmission!?

Looking for an Edelbrock Performer 9.0:1. But don't know where to buy it.

What engine do you think will be good to built in?

Cheers
Christian

 

I would say get a 302 crate motor which can be had for pretty cheap, unless you want to keep the car original.

 

If you put in a new engine, you will need a bell housing also. 1964 used a 5 bolt bellhousing, all years after used a 6 bolt bell housing.

Considering the condition of your engine, a new one would be a good idea. The cracks might indicate a bad overheat in the past.

 

It's not a Mustang car, but a Ford F100 1954. It's just the engine of a Mustang.

Cheers
Christian