swapped an LS motor into my friends car. everything went fine and it even started up. the ls motor was pulled from a 93 DA. it was running fine when we pulled it. The problem is the engine shakes kinda violently but idle is stays the same. we never checked the timing, can this cause it to shake like that?

 

shaking where? The car or the motor? Thats a very vague question.

 

Why not just check the timing? It takes like 2 seconds

 

the motor shakes