The V8 Owners Forum -

Posted: **Mon Jul 13, 2020 7:18 am**

Is it possible to use a 4.0 crank in a 3.9 engine ,as they both have the same stroke of 71mm? , or are they different in some way , thanks David.

Posted: **Mon Jul 13, 2020 8:47 am**

No - the 4.0 is a thicker crank with larger journals.

Posted: **Mon Jul 13, 2020 9:18 am**

Many thanks for that.

3.9/4.0