so i found a camaro in my area that is kinda what i was looking for but there is a problem with the car ever since one of the pervious owners of the car swapped in the 350 the car has had this problem which is when the computer goes in to a closed loop (at idle) it stalls sputters and dies. whats the problem and how do i fix it (this is the deciding factor of me buying the car) thanks

 

Reprogramming the PROM for the extra displacement.