66 GMC Long to Short LS Swap

[Duncan K]

Originally Posted by SkinnyG

Is the PCM, Throttle pedal, and TAC module all from the same donor? Sometimes it matters.

What is the operating angle at each universal joint? They don't want to be more than 3°. Is the vibration steady or cyclical?

Wheel imbalance likes to show up around around 100km/h - don't be afraid to re-check that. On my truck I have found a front wheel imbalance can feel like it's coming from the rear.

The pcm, pedal and TAC were all from the same donor.

I don't know what the operating angles are on the u joints. I will have to measure them. The vibration is steady after about 95 km/hr.

I will definetly check the balance on all the wheels again