273 swap to 318

[m99roadster]

I have a 68 Dart with a 273 and would like to exchange it with a 318 long block. Can I swap all the exhisting parts from the 273 to the 318 or will I have to locate other pieces? What would be the easiest way to do this. Thanks

 

[67Dart273]

As long as they have the same converter crank register, or if a stick, as long as the crank is drilled deep enough for the pilot shaft, I can think of nothing else.

 

[BillGrissom]

As said, the torque converter snout must fit the crankshaft pilot hole. The diameters increased sometime around 1968 on both small blocks and slants. Search member Charrlie_S posts for details. I just ordered a $20 adapter bushing from him 10 min ago to fit a later engine to my tranny.

 

[m99roadster]

So if I understand correctly, the oil pan and valve covers exhaust and intake manifolds along with all the pulleys and hardware will fit. I only need to worry about the converter and crank, right?

 

[pj_elia]

So if I understand correctly, the oil pan and valve covers exhaust and intake manifolds along with all the pulleys and hardware will fit. I only need to worry about the converter and crank, right?

Right!