To Tall

:banghead:I have a 1965 Barracuda that had a 273 4 speed.
The motor had been pulled and was long gone.
But it still had the 4-speed.
When i put in the 318 the motor now sets to high.
the oil pan is setting on the k-member so it wont go any lower.
And the carb is to high to close the hood.
Much less put on the air breather.
Where did i go wrong?