Transition to Cast Iron Racing Blocks

was that I would say that was in like 1990 that era 89 1990. so what were they using you said the prior to that you would use a Cleveland or a Windsor block right out of a junkyard okay that's about those winners like you know truck block whatever and it's a little more I guess uh refined from there they would get parts from Ford Motor Company but prior to that back in the 60s 70s early 80s people were finding older truck blocks that had a good history with casting runs that were solid floors were solid but when they got into the 80s and 90s you were getting production engines from Ford or Chevrolet you get these engines you take them apart and then you rebuild them and replace components you thought needed upgraded so a lot of factory components blended with aftermarket which gave life