cast, forged, or hypereutectic pistons
 

Can anyone tell me what year ford switched from using cast pistons to forged pistons, and what year they changed from forged to hypereutectic pistons. I am looking to buy a low mileage engine, but I want to make sure that it has forged pistons. I am thinking that it was around 85' or 86' that they switched from cast to forged, and around 91' or 92' that they changed to the hypereutectic.

Thanks

Re: cast, forged, or hypereutectic pistons
 

Cast to forged: 1985
forged to hypereutectic: 1993