4bt 72 Dart

trapster said
Nice work

Someone told me that the 4bt is just 2 cylinders removed from the 6bt and that they did not re-time the crankshaft to even out the spacing between the cylinder's firing so there is a tendency to vibrate more?

Is this true ?

as someone who worked for cummins engineer department and did a 4BT swap into an H2 Hummer, and truck pulled with Cummins for 10 years, that is false.